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A COMPILATION OF THE PHYSICAL

EQUILIBRIA AND RELATED PROPERTIES

OF THE

HYDROGEN-CARBON MONOXIDE SYSTEM

BY

D. E. DRAYER AND T. M. FLYNN

U. S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
THE NATIONAL BUREAU OF STANDARDS

Functions and Activities

The functions of the National Bureau of Standards are set forth in the Act of Congress, March 3, 1901, as amended by Congress in Public Law 619, 1950. These include the development and maintenance of the national standards of measurement and the provision of means and methods for making measurements consistent

with these standards; the determination of physical constants and properties of materials; the development of methods and instruments for testing materials, devices, and structures; advisory services to government agencies on scientific and technical problems; invention and development of devices to serve special needs of the Government; and the development of standard practices, codes, and specifications. The work includes basic

and applied research, development, engineering, instrumentation, testing, evaluation, calibration services,

and various consultation and information services. Research projects are also performed for other government

agencies when the work relates to and supplements the basic program of the Bureau or when the Bureau's

unique competence is required. The scope of activities is suggested by the listing of divisions and sections on the inside of the back cover.

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July 1957 to June 1960 (Includes Titles of Papers Published in Outside Journals 1950 to 1959) ($2.25); avail- able from the Superintendent of Documents, Government Printing Office, Washington 25, D. C.
NATIONAL BUREAU OF STANDARDS

technical ^lote

May 1961

A Compilation oi the Physical Equilibria

and

Related Properties oi the Hydrogen-Carbon Monoxide System

by

Dennis E. Drayer

and

Thomas M. Flynn

NBS Technical Notes are designed to supplement the Bureau's regular publications program. They provide a means for making available scientific data that are of transient or limited interest. Technical Notes may be

listed or referred to in the open literature. They are for sale by the Office of Technical Services, U. S. Department of Commerce, Washington 25, D. C.

DISTRIBUTED BY

UNITED STATES DEPARTMENT OF COMMERCE

OFFICE OF TECHNICAL SERVICES

WASHINGTON 25, D. C.

Price $2.25

II

Contents

Page

List of Tables IV

List of Figures V

Abstract VI

1. Introduction 1

1. 1 Purpose 1

1. 2 Organization 1

1. 3 Scope 2

1.4 Acknowledgements 2

2. Survey of Literature 2

3. Discussion of Available Data 3

4. K-Factor Charts 5

5. Solid-Vapor Equilibria 9

6. Three-Phase Equilibria 9

7. Phenomena Index 11

7. 1 Hydrogen 12

7. 2 Carbon Monoxide 13

7. 3 General 14

8. Properties Index 15

8. 1 Hydrogen 16

8. 2 Carbon Monoxide 18

8.3 General 19

9. Processes Index 21

9. 1 Hydrogen • 22

9. 2 Carbon Monoxide 23

9. 3 General 24
Ill

10. Bibliography of References

11. Appendix

25

73
IV

List oi Tables

Table Page

I CO-H Pressure-Concentration Data

(Verschoyle: 88.2°, 83.2°, 73. 2° and 68. 2°K) ... 74

II CO-H Critical Constants (Verschoyle). . . . . . .75

III CO-H Pressure-Concentration Data

(Ruhemann and Zinn: 90°, 83° and 78°K) 76

IV CO-H Pressure-Concentration Data

(Akers and Eubanks: 122.2°, 100°, and 83. 3°K) . . . 77

V Solid- Vapor Equilibria

(Verschoyle: 63. 2° and 58. 2°K) 78

VI Solid- Vapor Equilibria

(Dokoupii et al. : 50, 25, 15, 10, 5 and 1 . 3 atm) ... 79

VII Solid- Vapor Equilibria

(Dokoupii et al. : 65° to 35°K) 80

VIII Three -Phase Data

(Verschoyle) 81
V

List oi Figures

Figure Page

1. Regions Covered by Published Data 4

2. Carbon Monoxide -Hydrogen Vapor -Liquid

Equilibria Data: Hydrogen K-Factors 6

3. Carbon Monoxide -Hydrogen Vapor-Liquid

Equilibria Data: Carbon Monoxide K-Factors . . 7

4. Vapor -Liquid Equilibria

Carbon Monoxide-Hydrogen System 8

5. Solid- Vapor Equilibria. Concentration of

Carbon Monoxide in the Vapor Phase 10
VI

Abstract

Literature data have been used to calculate K-factors for the

hydrogen-carbon monoxide system over the range of 68. 2 to 122. 2°K

and 10 to 225 atmospheres. K-factors are presented graphically for

eight isotherms over this range.

Published data on the soiid-vapor region are presented

separately as composition versus pressure at constant temperature.

A bibliography of approximately 450 references is also

presented on related properties for this system and for the pure

components.

1. Introduction

1 . 1 Purpose

Hydrogen gas for liquefaction purposes frequently contains

large amounts of other gases. Typical impurities or contaminants

found in hydrogen- source streams include nitrogen, carbon monoxide,

methane, ethane, and higher hydrocarbons. Purification of these

various sources of hydrogen requires a considerable knowledge of the

physical equilibria oi the systems involved.

As an initial step in the study of the physical equilibria of

hydrogen systems, a review of the literature was undertaken to

determine what has been done and is known in this area. In this paper,

the carbon monoxide-hydrogen system was so studied. (Previously,

the nitrogen-hydrogen system was examined). The purpose of this

paper is to determine what is known about the physical equilibria

relationships and to present an extensive compilation of known related

references for data for this system. It is hoped that this paper will

thus provide a firm basis for the conduct of research programs in

this area.

Future publications in this series will be concerned with the

physical equilibria of hydrogen and other important components.

Binary systems will be studied initially. When such a program is

completed, it is hoped that the results will be ot significant value in

the design of cryogenic equipment.

1. 2 Organization

The information is presented in three principal parts: (1)

physical equilibria with major emphasis on vapor-liquid equilibria;

(2) properties related to physical equilibria; and (3) a bibliography of

references. Some discussion is presented with Part (1). The

information of Part (2) is presented in tabular form showing the

reference where such data are to be found. Part (3), the Bibliography,

lists the references alphabetically by author.
2

1 . 3 Scope

The scope oi this work is as follows: an exhaustive literature

search, as summarized in NBS Technical Note No. 56, revealed much

of the pertinent data; such data were abstracted and presented in the

form of K-factor charts and a concentration-pressure chart and as a

bibliography of references for related areas of interest. The areas

searched are presented in the above reference and will not be

enumerated here. Generally speaking, the literature was searched

extensively and includes articles published up to and prior to July of

I960.

1.4 Acknowledgements

The authors especially appreciate the aid of the staff of the

Data Center of the National Bureau of Standards Cryogenic Engineering

Laboratory who provided the majority of the original papers for review.

2. Survey of Literature

The literature search revealed three important references for

carbon monoxide -hydrogen vapor -liquid equilibria data. These were

Akers and Eubanks (4), Ruhemann and Zinn (368), and Verschoyle

(423). K-factor charts were prepared from the data of these

references. In all cases the data had to be re-interpreted to arrive at

K-factors.

Of noteworthy interest is the article by Verschoyle (423) who

also presents solid-vapor and solid-liquid-vapor data for this same

system. Also, the extensive work of Dokoupil et al. (88) presents

solid-gas equilibria data for this system.

No related physical data are actually presented in this report;

only references for such material are listed. Other areas so covered

include adsorption phenomena, purification processes, solubility

relationships, density and compressibility data, equations of state,

thermodynamic and transport properties, P-V-T data, critical

constants, virial coefficients, Beattie-Bridgeman constants, analytical

techniques, and various processing references. Such material for the

pure components as well as for mixtures of carbon monoxide and

hydrogen is included in many cases. A general phenomena category

is also presented to aid in the theoretical study of adsorption, phase

equilibria, purification, solubility relationships, and other important
areas.

3. Discussion of Available Data

For this system one could expect the vapor-liquid data, if

complete, to range roughly from the triple point temperature of

carbon monoxide to the critical temperature of carbon monoxide

(68. 1 to 132. 9°K). The three articles mentioned previously provided

data for eight isotherms between 68. 2°K and 122. 2°K. The isotherms

so presented are at temperatures of 68. 2° , 73.2°, 78°, 83° -83. 3°,

88.2°, 90°, 100°, and 122. 2°K. (The vapor -liquid equilibria data

for 83°K and for 83. 3°K are plotted as one isotherm and so labeled

83° -83. 3°K). Thus, the data available do present a rather complete

picture of the vapor-liquid equilibria for this system.

The solid-vapor region has been explored at 58. 2° and 63. 2°K

and from 20 to 175 atmospheres by Verschoyle (423) and from 32° to

70°K and 1. 3 to 50 atmospheres by Dokoupil et al. (88).

The P-T regions covered by the published data are presented

in Figure 1. This figure indicates that this system has been rather

well explored in both the vapor-liquid region and the solid-vapor

region. (The P-T data of hydrogen and carbon monoxide needed for

the construction of Figure 1 were obtained from Johnson (189),

Verschoyle (423) and Woolley, Scott and Brickwedde (446)).

The original data were treated to arrive at the corresponding

K-factors. K is defined as y/x where y is the mole fraction of a component in the vapor phase and x is the mole fraction ol that

component in the liquid phase. K-factors were calculated for each

component at a given temperature and pressure. After plotting the Kfactors derived from the various investigations, a smooth curve was

drawn for the given isotherm. Finally, the smoothed, individual Kfactors were transferred to a plot of K versus total pressure with

temperature as a parameter.

It is not the purpose of this report to present a test of the data

for thermodynamic consistency. However, some general comments

regarding the agreement between investigators is in order. Most

discrepancies appear to lie in the pressure range from 10 to 30

atmospheres. In this range, there is some inconsistency in the

hydrogen data as evidenced by cross -over of the isotherms of different

investigators. The carbon monoxide data were not subject to these
1000

40 60 80

TEMPERATURE, °K

100 120 140

Figure 1. Regions Covered by Published Data. Parenthetical

Numbers Refer to Sources in Bibliography.
variations. This scatter of data for hydrogen may stem partly from

the analytical techniques used.

The 78° and 90°K isotherms, as contributed by Ruhemann and

Zinn, extend only to 50 atmospheres. By using the adjacent isotherms

as guide lines, one could, if required, probably make a reasonable

extrapolation of these two isotherms to higher pressures.

It must be emphasized that this report is based on the original

data of the investigators. These data, in most cases, have not been

tested for thermodynamic consistency and should be used only with

thorough awareness of this fact.

4. K-Factor Charts

Presented in Tables I, III and IV in the Appendix are the data

used in computing K-factors.

Figures 2 and 3 are plots of the K-factors of hydrogen and

carbon monoxide, respectively. Dotted portions on these figures

indicate extrapolated areas. Figure 4 shows, finally, the curves for

both hydrogen and carbon monoxide as taken from Figures 2 and 3. In

Figure 4, hydrogen K-factors are situated above the line K - 1 and

carbon monoxide K-factors are below this line. The intersection of

an isotherm with the line K = 1 is called the plait point for that isotherm.

The plait points for the 68. 2° and 73. 2°K isotherms were estimated

by Verschoyle to be at pressures of 380 and 325 atmospheres, respectively. Critical constants for this system have been estimated by

Verschoyle (423) and are presented in Table II.

Figure 4 thus contains sufficient information to enable one to

calculate the vapor and liquid compositions under given temperature

and pressure conditions. After the K-factors are obtained, one simply

substitutes into the following formulae to obtain phase compositions:

K

i = Vx

, <'>

K

2 =y

2A2

(2)



110 120 130 140

PRESSURE, atmospheres

Figure 2. Carbon Monoxide -Hydrogen Vapor -Liquid Equilibria

Data. Hydrogen K-Factors. Parenthetical Numbers

Refer to Sources in Bibliography.



110 120 130 140 150 PRESSURE, atmospheres

Figure 3. Carbon Monoxide -Hydrogen Vapor -Liquid Equilibria

Data. Carbon Monoxide K-Factors. Parenthetical

Numbers Refer to Sources in Bibliography.


I
100 150 PRESSURE, atmospheres

Figure 4. Vapor -Liquid Equilibria. Carbon Monoxide -Hydrogen

System.

y1 +y2

=

1 - < 3 >

x +x

2

= 1.0 (4)

The subscripts refer to hydrogen and carbon monoxide. For example,

at a system pressure of 100 atm. , the phase compositions at 88. 2°K

could be found as follows:

K

co = °- 159 = yco/xco

: *co =

°- 159x

co

K

H

2 — =>H2/

XH

2

;yH

2

= 3- 73XH

2

Solving equations (3) and (4), one obtains

v ^ = 0.122 ; x^ = 0.764 y CO CO

y„ = 0. 878 ; x =0. 236 H

2

H

2

Similarily, dew points and bubble points of given hydrogen- carbon

monoxide mixtures can be calculated.

5. Solid- Vapor Equilibria

The data of Verschoyle (423) are given in Table V. These data

have been plotted in Figure 5 to show vapor phase composition versus

total pressure for the isotherms of 58. 2° and 63. 2°K.

The extensive solid-gas equilibria data of Dokoupil et al. (88)

are given in Table VI. These data have been replotted (not shown) to

arrive at P-y curves at 5°K temperature intervals from 35° to 65°K.

The derived data are shown in Table VII and also on Figure 5. Of noteworthy interest is the minimum shown by each isotherm. The locus

of these minimum points in the y-P curves thus allow the selection of

the optimum total pressure at a given temperature to yield a minimum

CO concentration in the gas phase.

6. Three-Phase Equilibria

Verschoyle has also presented data showing the locus of the

three-phase curve. Table VIII contains this information.
10

10

10'

w io o

Q-O

O

<1> o id4

10

10

1

4 l

-2

- 65

63.2V

^-*~' •^ 1 •

o.^*^

> \

1

* 60°

-3 V "^55°

/50°

1

^45°

40°

e**^35° K " \ I It \-Sr

\

5 VJ DKOUI ERSC

3 IL, e HOYL

f ol E (4

188) 23)

Iu

6 50 100 PRESSURE, atmospheres

150

Figure 5. Solid-Vapor Equilibria. Concentration of Carbon

Monoxide in the Vapor Phase.
11

7.

Phenomena Index

Phenomena

12

MAJOR COMPONENT

HYDROGEN

Category- Other Components References

Adsorption 8, 11, 84, 87,

119, 176, 183,

208, 209, 211,

249, 250, 266,

318, 332, 333,

395, 414, 419

107,

187,

212,

296,

351,

Carbon Dioxide 169, 248 —

Nitrogen 188, 419

Oxygen-NitrogenMethane- Carbon Monoxide

227

Phase Equilibria 136,

239,

137, 156,

400

231,

Argon 315

Carbon Dioxide 141

Carbon Monoxide 4, 88, 368, 423

Deuterium 216

Helium 387

Hydrocarbons 26, 27, 28, 312

Methane 104, 433

Methane -Nitrogen 391

Methane -NitrogenCarbon Monoxide

408

Nitrogen 88,

423

138, 314, . 315,

Nitrogen- Carbon 4, 88, 96, 368 423

Monoxide

Non- Polar Solvents 64

Oxygen 315

Paraffins 238

Purification - 81,

198,

82, 94, 170,

306, 432, 450

Carbon Monoxide 204, 450

Nitrogen- Carbon

Monoxide

450
Phenomena

13

MAJOR COMPONENT

CARBON MONOXIDE

Category- Other Components References

Adsorption 8, 84, 93, 121,

182, 331, 332, 333

Hydrogen- OxygenNitrogen- Methane

227

Phase Equilibria 156, 437

Hydrocarbons 312

Hydrogen 4, 88, 368, 423

Hydrogen- Nitrogen 4,88, 96, 368, 423

Hydrogen-Nitrogen

Methane

408

Methane 54, 448

Nitrogen 219, 378

Purification Hydrogen 204, 450

Hydrogen- Nitrogen 450
14

Phenomena

MAJOR COMPONENT

GENERAL

Category- Other Components References

Adsorption 12, 13, 30, 44, 45,

50, 59, 69, 74, 76,

89, 113, 120, 177,

178, 179, 181, 196,

229, 232, 233, 239,

240, 242, 244, 245,

251, 259, 267, 270,

301, 311, 313, 343,

346, 349, 352, 359,

360, 406, 413, 415,

417, 418, 420, 428,

439, 440, 441, 451

Phase Equilibria 31, 32, 36, 37, 46,

51, 57, 65, 72, 92,

98, 99, 105, 111,

118, 141, 156, 157,

184, 215, 221, 223,

230, 246, 247, 259,

290, 294, 304, 335,

337, 344, 356, 357,

358, 362, 363, 367,

371,379, 384, 388,

401, 405, 412, 442,

449

Purification 5, 135, 158, 217,

222, 243, 348, 355,

416, 418, 429, 441

15

8.

Properties Index

Properties

16

MAJOR COMPONENT

HYDROGEN

Category Other Components References

Beattie-Bridgeman

Constants

78

Critical Constants 9, 80, 103, 116,

173, 189, 200, 207,

228, 434

Density, Expansion,

Compressibility

2, 3, 10, 14, 15,

17, 21, 47, 80, 85,

103, 139, 154, 155,

189, 192, 201, 213,

260, 269, 275, 277,

373, 382, 438, 452

Carbon Dioxide 421

Nitrogen 14, 15, 17, 43b

Equations of State,

Corresponding

1, 24, 61, 78, 115,

255, 263, 377

States Carbon Monoxide 86

Isotherms 14, 15, 17, 25, 71,

174, 276, 280, 297,

298, 300, 381, 409,

422

Carbon Monoxide 381, 409

Helium 25

Nitrogen 14, 15, 17, 422

Thermodynamic

Properties

33, 40, 77, 103,

106, 117, 124, 125,

139, 147, 165, 180,

189, 190, 195, 207,

214, 236, 278, 383,

386, 400, 445, 446

Carbon Monoxide 147

Nitrogen 39, 147, 370
roperties

17

MAJOR COMPONENT

HYDROGEN

(Continued)

ategory Other Components References

ransport

roperties

23, 61, 102, 103,

139, 189, 285,

334, 446

apor Pressure 9, 55, 58, 62, 80,

103, 114, 116, 140,

145, 153, 162, 172,

189, 191, 193, 195,

283, 284, 383, 385,

411, 435, 436

Carbon Dioxide 226

Hydrogen Deuteride 172

Methane 225

Nitrogen 114, 225, 226, 411

Nitrogen-Carbon Dioxide 226

Nitrogen -Methane 225

irial 285, 287, 375, 376

oefficients Carbon Dioxide 67
Properties

18

MAJOR COMPONENT

CARBON MONOXIDE

Thermodynamic

Properties

Transport

Properties

Vapor Pressure

Virial

Coefficients

Hydrogen

Methane

Nitrogen

Carbon Dioxide

40, 77, 97, 106,

130, 147, 189,

262, 279, 323

147

"264, 448

143, 189

60, 70, 79, 80,

140, 189, 262,

281, 447

389, 390

67
Properties

19

MAJOR COMPONENT

GENERAL

Category Other Components References

Bibliography

C ompre s s ibility

6

18, 43, 48, 56,

129, 159, 265,

293, 316, 321,

330, 347, 393,

399

Corresponding

States 63, 134, 149, 151,

152, 292, 302,

327, 347

Critical

Properties 52, 129, 148, 254,

273, 319, 320,

340, 347

Densities 29, 129, 261, 341,

347, 366, 372

Equations of

State 20, 22, 66, 68,

72, 73, 164, 167,

199, 205, 220,

224, 237, 253,

256, 257, 258,

268, 289, 293,

295, 302, 308,

310, 326, 345,

347, 361, 396,

397, 398, 431,

453

Expansion

Isotherms

234

175, 273, 309

Lennard -Jones

Potentials 126, 299
Properties

20

MAJOR COMPONENT

GENERAL

(Continued)

Category

Thermodynamic

Properties

Other Components References

60, 90, 10

123, 128

166, 171

194, 197

235, 274

291, 293

304, 324

330, 335

338, 342

345, 347

364, 365

372, 410

444

0, 101,

150,

186,

218,

282,

294,

328,

336,

344,

353,

369,

442,

Transport

Properties 112, 122

160, 168

347, 366

144,

243,

374

Vapor

Pressure

Virial

Coefficients

42, 49, : 148, 163

241, 291

330, 341

394, 402

404, 410

27, 146,

202,

303,

347,

403,

424

91, 151,

210, 252

328, 329

205, 206,

299,

350

21

9.0

Processes Index

Processes

22

MAJOR COMPONENT

HYDROGEN

Category- Other Components References

Analytical 34, 75, 161, 305

Carbon Dioxide - Oxygen -Carbon

Monoxide 110

Carbon Monoxide 317, 380

Carbon Monoxide

Methane 272

Carbon Monoxide - Nitrogen 109

Helium 387

Nitrogen -Carbon

Monoxide -Methane 185

Processing 7, 83, 306, 433
Processes

23

Category

MAJOR COMPONENT

CARBON MONOXIDE

Other Components References

Analytical 34, 35, 131, 203,

307, 322, 426,

427, 430

Carbon DioxideOxygen -Hydrogen

Ethylene

Hydrogen

Hydrogen -Methane

110

325

317, 380

272

Hydrogen -Nitrogen

Hydrogen -Nitrogen

Methane

109

185
24

Processes

MAJOR COMPONENT

GENERAL

Cate gory Other Components References

Analytical 38, 69, 142, 196,

286, 384, 403,

404, 425

25

10.0

Bibliography of References

%
26

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(1925)

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in the system hydrogen-nitrogen-carbon monoxide

Advances in Cryogenic Eng. 3, 275-93 (I960)

5. Almquist, J. A. and Dodge, R. L. Ultra-purification of gas

mixtures

Chem. & Met. Eng. 3_3, 89-92 (1926)

6. Anon. Bibliography of gas properties

Trans. Am. Soc. Mech. Engrs. 7l_, 894-5, 901-2 (1949)

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Petrol. Processing 11 , 136-8(1956)

8. Armbruster, M. H. and Austin, J. E. The adsorption of gases

on smooth surfaces of steel: argon, neon, hydrogen, nitrogen,

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J. Chem. Phys. 18, 1295(1950)

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Ann. Physik [4], 46, 419-45(1915)
27

11. Barrer, R. M. Interaction of hydrogen with micro-crystalline

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Proc. Roy. Soc. (London) Al 49 , 231-69(1935)

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Trans. Faraday Soc. 49, 929-39(1953)

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1000 atmospheres

J. Am. Chem. Soc. 4_9, 687-701 (1927)

15. Bartlett, E. P. , Cupples, H. L. and Tremearne, T. H.

Compressibility isotherms of hydrogen, nitrogen and a 3:1

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J. Am. Chem. Soc. 50, 1275-88 (1928)

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J. Am. Chem. Soc. _52, 1374-82 (1930)

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atmospheres

J. Am. Chem. Soc. 52, 1363-74 (1930)

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J. chim. phys. 31, 65-75 (1934)
28

19. Batuecas, T. , Schlatter, C. and Maverick, G. Compressibility

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Proc. Am. Acad. Arts Sci. 63_, 229-308 (1928)

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%
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%
60

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73

11.0

Appendix

74

TABLE I

Reference: Verschoyle (423)

Temperature Pressure Atm

Liquid Vapor K

•c •K Mole % H Mole % CO Mole % H Mole % CO H

2 N

2 -183 88. 2 181. 3 45.4 54. 6 70. 4 29. 6 1. 55 0. 542

" " 166. 7 41. 59. 77. 1 22. 9 1. 88 0. 388

" " 128. 2 30. 3 69. 7 84. 8 15. 2 2. 80 0. 218

" " 89. 6 21. 7 78. 3 88. 7 11. 3 4. 09 0. 144

" 89. 3 20. 3 79. 7 88. 8 11. 2 4. 37 0. 141

" " 55. 9 13.4 86. 6 90. 2 9. 8 6. 73 0. 113

" 55. 8 12. 9 87. 1 89. 3 10. 7 6. 92 0. 123

11 " 31. 4 7. 1 92. 9 88. 8 11.2 12. 5 0. 121

" " 22. 1 5. 2 94. 8 86.6 13. 4 16. 6 0. 141

1

' 17. 2 3. 6 96. 4 84. 16. 23. 3 0. 166

-190 83. 2 224. 8 54. 1 45. 9 66. 3 33. 7 1. 23 0. 734

" " 220. 9 48. 6 51. 4 69. 4 30. 6 1. 43 0. 595

" " 215. 1 47. 53. 73. 7 26. 3 1. 57 0. 496

11 " 210. 4 44. 8 55. 2 75. 9 24. 1 1. 69 0. 437

' " 205. 4 43. 5 56. 5 76. 6 23. 4 1. 76 0. 414

1 " 200. 6 41. 1 58. 9 76. 7 23. 3 1. 87 0. 396

1 " 200. 6 41. 5 58. 5 77. 7 iZ. 3 1. 87 0. 381

1 " 195. 8 40. 1 59. 9 79. 5 20. 5 1. 98 0. 342

' " 190. 9 38. 1 61. 9 80. 5 19. 5 2. 11 0. 315

' 11 186. 1 36. 8 63. 2 80. 8 19. 2 2. 20 0. 304

1 " 176. 4 3-1. 4 65. 6 83. 1 16.9 2.42 0. 258

' " 166. 8 32. 9 67. 1 84. 3 15. 7 2. 56 0. 234

' " 128. 1 21. 9 75. 1 88. 9 11.1 3. 57 0. 148

1 " 128. 1 25. 4 74. 6 88. 8 11.2 3. 50 0. 150

' " 109. 8 22. 8 77. 2 90. 4 9. 6 3.96 0. 124

' " 109. 8 21. 79. 90. 7 9. 3 4. 32 0. 118

1 109. 6 20. 6 79.4 90. 6 9.4 4. 40 0. 118

1 " 89. 5 19. 5 80. 5 91. 8 8. 2 4. 71 0. 102

' " 89. 3 17. 83. 92. 8. 5. 41 0. 0964

1 " 51. 2 12. 5 87. 5 93. 2 6. 8 7. 46 0. 0777

' 51. 2 10. 2 89. 8 93. 1 6. 9 9. 13 0. 0768

" " 17. 2 2. 7 97. 3 89. 9 10. 1 33. 3 0. 104

-200 73. 2 224. 9 27. 5 72. 5 89. 1 1. 3. 24 0. 152

1 " 224. 8 26. 5 73. 5 8". 3 10. 7 3. 37 0. 146

' " 205. 6 25. 75. 91. 2 8. 8 3. 65 0. 117

1 " 205. 4 25. 7 74. 3 90. 2 9. 8 3. 51 0. 132

' » 186. 2 11. 9 77. 1 91. 6 8. 4 4. 00 0. 109

1 " 186. 2 23. 6 76.4 91.4 8. 6 3. 87 0. 113

1 " 176. 4 23. 77. 92. 8. 4. 00 0. 104

' 11 176. 4 21. 8 78. 2 91. 7 8. 3 4. 21 0. 106

' " 152. 4 20. 6 79. 4 9 3.0 7. 4. 51 0. 0882

1 "

1 13. 9 16. 6 83. 4 95. 1 4. 9 5. 73 0. 0588

1 " 113. 8 15.4 84. 6 95. 5 4. 5 6. 20 0. 0532

1 " 113. 7 16. 5 83. 5 94. 8 5. 2 5. 75 0. 0623

' " 80. 2 12. 7 87. 3 95. 9 4. 1 7. 55 0. 0470

1 " 80. 1 12. 88. 96.4 3. 6 8. 03 0. 0409

1 " 51. 8. 4 91. 6 96. 7 3. 3 11.5 0. 0360

' " 31. 8 5. 6 94. 4 97. 5 2. 5 17. 4 0. 0265

17. 3 3. 3 96. 7 96. 7 3. 3 29. 3 0. 0341

-205 68. 2 215. 2 20. 2 79. 8 93. 4 6. 6 4. 62 0. 0827

' 1 200. 18. 8 81. 2 93. 9 6. 1 4. 99 0. 0751

1 ' 152. 3 16. 3 83. 7 94. 6 5. 4 5. 80 0. 0645

' ' 118.4 13.8 86. 2 96. 5 3. 5 6. 99 0. 0406

' 79.9 10. 2 89. 8 97. 7 2. 3 9. 58 0. 0256

1 41. 4 6. 3 93. 7 97. 5 2. 5 15. 5 0. 0267

1 1 41.4 6. 2 93. 8 98. 5 1. 5 15.9 0. 0160

1 31. 7 4. 9 95. 1 98. 6 1.4 20. 1 0. 0147

' 26. 6 4. 2 95. 8 97. 6 2.4 23. 2 0. 0251

' * 21. 7 3.3 96. 7 98. 2 1. 8 29. 8 0. 0!:>,6

I

17. 3.„ 97. 97. 9 2. 1 32. 6 0. 0216
75

TABLE II

CO-H CRITICAL CONSTANTS

2

Reference: Verschoyle (423)

Plait -Point Critical Point of Contact

Temperature Pressure

Atm

Mole % H

Pressure

Atm

Mole % H

°C °K

-185

-190

-200

-205

88. 2

83. 2

73. 2

68. 2

187

228

(325)

(380)

58

60

(64)

(66)

54

48

34

30

90

93

97. 5

99.5
76

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78

TABLE V

SOLID -VAPOR EQUILIBRIA

Reference: Verschoyle (423)

Temperature Pressure Vapor Phase

°C °K Atm Mole % H Mole % CO

-210 63.2 195. 75 96.31 3.69

176.41 96. 53 3.47

147.39 96.88 3. 12

137. 76 97.03 2.97

104. 01 97.80 2. 20

79.80 97.42 2. 58

65. 74 98. 76 1. 24

32. 03 99. 18 0.82

21.85 99. 12 0. 88

16.81 99.22 0. 78

-215 58. 2 176. 37 98. 18 1. 82

ii 1

1

157. 03 98. 08 1.92

it ii 128. 05 98. 50 1. 50

ii ii 89. 52 98. 90 1. 10

n ii 51.37 99.47 0. 53

^s
79

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in " " " = r = z in - _ _ (M " " "

r z r r *= =========== =
80

TABLE VII SOLID-VAPOR EQUILIBRIA

Reference: Dokoupil, Van Soest and Swenker ({ Table VI, This Report

y. Temperature, Pressure, Mole Fraction CO

°K Atm. in Vapor Phase

35 1. 3 0. 00000355

n 5 0. 00000205

1

1

10 0. 00000240

ii 15 0. 0000110

ii 25 0. 000083

1

1

50 0. 000119

40 1. 3 0. 000044

1 1 5 0. 0000145

II 10 0. 0000125

II 15 0. 0000175

! 1

1

25 0. 000112

1 50 0. 000180

45 1. 3 0. 000223

1

1

5 0. 0000780

1

1

10 0. 0000620

n 15 0. 0000510

1

1

25 0. 000153

ii 50 0. 000310

50 1. 3 0. 00110

ii 5 0. 000361

ii 10 0. 000253

ii 15 0. 000212

1

1

25 0. 000241

ii 50 0. 000630

55 1. 3 0. 00470

ii 5 0. 00148

1

1

10 0. 00103

ii 15 o. 000910

it 25 0. 000750

ii 50 0. 00160

60 1. 3 0.0160

ii 5 0. 0059

ii 10 0. 00420

it 15 0. 00325

ii 25 0. 00280

ii 50 0. 00480

65 25 0. 0081

ii 50 0. 0100
81

TABLE VIII

THREE-PHASE DATA

Reference: Verschoyle (423)

Pressure

Atm

Temperature

°C °K

55. 2 -206. 12 67. 04

55. 2 -206. 15 67. 01

104. 1 -206. 54 66. 62

104. 1 -206. 59 66. 57

104. 1 -206. 73 66.43

147.4 -206.48 66. 68

147.4 -206.67 66.49

147.4 -206. 72 66.44

147.4 -206.87 66.29

205. 5 -206.34 66.82

205. 5 -206. 38 66. 78

205. 5 -206. 39 66. 77


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