bluuebunny/crossref_metadata_2025_split huggingface dataset:
Physico-chemical Investigations on Catalytic Mechanism. IV. On the Fischer-Tropsch Synthesis of Hydrocarbons (Experimental Series I)
Authors: Hamai Senzo , Hayashi Shiro , Shimamura Kiyoshi , Igarashi Hiroshi 
Published: July 2006

Abstract
(1) The experimental apparatus and the experimental procedures were described for the investigations on the Fischer—Tropsch reaction with special references to its catalytic mechanism.
(2) The durability of the catalyst used was discussed in connection with the investigation of catalytic activity as to its liquid hydrocarbons synthesis.
(3) Some properties of the reaction products were tabulated.
(4) Some consideration of CH4 formation in connection with our proposed mechanism werw presented and correlated with the experimental results.
Hydrogenation and Polymerisation Reactions of Acetylene. I. The Reaction in Liquid Phase and the Effect of High Tension Discharge
Authors: Kimura Osamu 
Published: July 2006

Abstract
(1) Some theoretical considerations with regard to the hydrogenation and polymerisation of acetylene have been made.
(2) The reaction has been studied in liquid phase with such catalysts as nickel, cobalt, palladium, and copper.
(3) The effect of high tension discharge has been studied with and without catalyst.
(4) It has been found that high tension discharge not only accelerates the reaction, but also changes the nature of the reaction.
Studies on Nickel and Cobalt in Mineral Springs. I. Nickel Content of Acid Vitriol Springs in Japan
Authors: Tanaka Nobuyuki 
Published: July 2006

Abstract
The determination method for nickel in mineral springs and some applications of it have been described. The method of extracting nickel was taken from Sandell’s report, which is based on the extraction of nickel dimethylglyoxime from ammoniacal citrate solution using chloroform. For the purpose of obtaining an accurate determination, some improvements were made on Rollet’s method; as the concentration of ammonium hydroxide in the final solution was made higher, the reproducibility was increased, and therefore, Pulfrich photometer could be employed instead of Duboscq colorimeter. The mean error of the determinations did not exceed ±2 per cent.
Some fifteen samples of acid vitriol springs were analysed in connection with nickel and a few other elements. The richest in nickel was Wakesui, Okayama Prefecture, with the richest total residue and iron content. The percentage of nickel in the total residue ranged from 0.00026 to 0.0087%, and the average is 0.0024%, showing a far higher value against either Clarke number for nickel or the percentage of the mean nickel content of igneous rocks, while the ratio Ni/Fe of the present analyses covers the range from 0.67×10−4 to 8.59×10−4, the average of which is 2.68×10−4, far less than either 2.02×10−3 of Clarke number or 5.81×10−3 of igneous rocks.
Finally, details on some springs, —Wakesui, Okayama Prefecture, Aoki, Yamanasi Prefecture, and Kinkei, Totigi Prefecture—have been related. The distribution of nickel between the ocherous ferric hydroxide precipitated from the water of Kinkei and its filtrate has been represented and the answer to the question whether the deposit of ferric hydroxide from waters of. the kind accompanies nickel or not, suggested.
On the Hydrogenation and Polymerisation Reaction of Acetylene. IV. Kinetics of Polymerisation by Use of Thermal Separation Column. II
Authors: Kimura Osamu , Hirota Kozo 
Published: July 2006

Abstract
(1) A method for calculating both reaction velocity and activation energy in the case when the reaction has been carried out in the thermal separation column of Clusius and Dickel has been described.
(2) The method has been applied to the polymerisation reaction of acetylene previously investigated by the present authors.
(3) It has been found that the calculated heat of activation is slightly smaller than our preliminary value, but larger than the directly observed value by Taylor and van Hook, and that the calculated velocity constants are several times larger than those hitherto have been observed.
Physico-Chemical Investigations on Catalytic Mechanism (X). On the Reaction Products in the Fischer-Tropsch Synthesis. Experimental Series II (6)
Authors: Hamai Senzo 
Published: July 2006

Abstract
(1) The results of the distillation analysis of the products have been graphically presented in the volume percent against each constituent and correlated.
(2) The physico-chemical properties such as refractive index, specific gravity, apparent molecular weight and the elementary analysis of the products along with experimental conditions and the catalyst used have been tabulated.
(3) As regards the effects of the catalyst composition on the nature and the composition of the products, we may posibly state that there is practically no definite conclusion, however, a slight variation may be found, as far as these series of data and the catalyst are concerned.
Hydrocarbon Conversion with Special Reference to the Thermodynamical Calculations for the Isomerization Reactions. I
Authors: Hamai Senzo 
Published: July 2006

Abstract
(1) In order to grasp the general trend of isomerization reactions of saturated hydrocarbons, the free energy equations, as a function of temperature convenient for practical calculations, are derived based on one of the more recent data available.
(2) Making use of these derived simple free energy equations, ΔF’s at 0°, 25°, 100°, 200° and 300°C. are computed and tabulated and compared with those of other sources.
(3) The free energy equations of some of the useful reactions such as the formation of neohexane by alkylation, and the formation of isooctane by the coupling reaction of isobutene and isobutane are derived and ΔF’s are calculated.
(4) Discussions in connection with these thermodynamical calculations for iso？erization reactions are presented.
(5) Discussions of the isomerization in connection with so-called “Bond Free Energy Equation” of Bruins and Czarnecki are presented.
(6) In general, isomerization reactions of hydrocarbons, with few exceptions, are favoured thermodynamically at a lower temperature.
(7) Isomerization reactions from simpler structures to more complicated and branched compounds are favoured thermodynamically, more or less, at a lower tem？erature.
(8) In the isomerization reactions of di- or tri-methylated compounds involving merely an exchange of the position of the carbon to which methyl or ethyl groups are attached, a structure which is more non-symmetrical favours the isomerization thermo？ynamically at a higher temperature.
(9) Free energy changes involved in the isomerization reactions are of small magnitude as compared with those of ordinary chemical reactions.
(10) The errors involved in the data of the free energy changes of isomerization often amount to a magnitude as big as the free energy change itself. Hence in the selection of data for such calculations, much caution should be taken into consideration.
Studies on the Equilibrium between Dilute Solution and Solute Vapour. I. Measurement of the Condensation Coefficient (α) of Solute Vapour at the Liquid Surface of Solvents
Authors: Uhara Ituro 
Published: July 2006

Abstract
(1) The condensation coefficient (α) of iodine and other easily analysable vapours at the surface of various solvents were measured by newly deviced method. The orders of the magnitude of them are 10−3∼10−5 at room temperature.
(2) A solubility formula including α was derived kinetically, in which the effects of surface adsorption and compound formation were taken into considerations, and an explanation of the mechanism of evaporation and dissolution was tried by comparing with solubility data.
Studies on Nickel and Cobalt in Arsenopyrites. I. Estimation and Determination of Cobalt in Some Arsenopyrites
Authors: Tanaka Nobuyuki 
Published: July 2006

Abstract
Nitroso-R-salt method has been investigated for the purpose of determining a minute quantity of cobalt in minerals. In some previous papers it was reported that the method is very satisfactory for determining cobalt in plants, soils and animal nutritions. In this study it has been proved thát the method is also fairly satisfactory for determining cobalt in minerals containing a large amount of iron.
Cobalt content of some arsenopyrites has been determined by this colorimetric or the gravimetric method. The result shows that all the samples contain a minute or fairly large quantity of cobalt. However, the problem in what form cobalt is contained in these samples remains for the subsequent studies.
The Quantum Mechanical Treatment of Viscosity by Use of the Rigid Elastic Sphere Model. I. The Viscosity Coefficient of Gaseous Helium and Neon
Authors: Hirota Kozo 
Published: July 2006

Abstract
1)According to the formula of Massay and Mohr, the viscosity cross-section has been calculated quantum-mechanically in more details than they did, using the rigid elastic sphere model.
2) The viscosity coefficients of neon and helium have been calculated over wide temperature ranges, and it has been found that the concordance between theory and experiment is yet insufficient, though it is better than the result of the classical method.
3) The agreement has been improved, if the “Sutherland term” is introduced in the formula to take the intermolecular potential in consideration.
4) The criticism of Uehling to Massay and Mohr’s result has been found rather inappropriate, so far as the similar collision is concerned.
A View on the Formation of Heteroboric Acid
Authors: Tsuzuki Yojiro , Hayakawa Iso 
Published: July 2006

Abstract
By observing the effect of boric acid and borax on the optical rotation of gluconates and saccharates, the authors have demonstrated that heteroboric acid can be favourably formed only when one of the reactants is in ionic state. A rational explanation for this conclusion is also presented.
Studies on Synthetic Polyamides, (IV). Solution Viscosity
Authors: Hosino Kôhei 
Published: July 2006

Abstract
1. Flory’s theory on molecular size distribution in linear condensation polymers was applied to linear synthetic polyamides.
2. Viscosities of polyhexamethylene adipamide or polycapramide in m-cresol are expressed by Fickentscher’s equation.
3. The application of the Staudinger viscosity relation to polyamide was discussed.
4. The relations between intrinsic visocisty and “weight average” molecular weight were established experimentally from Flory’s theory and the freezing point depression measurement of phenolic solution.
5. The time dependence of the degree of depolymerization was discussed under the assumption that the rate at which bonds are cut is proportional to the number of uncut bonds in the system.
Studies on Synthetic Polyamide (V). Precipitability and Melt Viscosity
Authors: Hosino K\={o}hei 
Published: July 2006

Abstract
A study of polyamide has been attempted on a series of strictly isochemical linear synthetic polyamide derived from ε-aminocaproic acid.
(1) The polymer molecules have been investigated by “equilibrium” interaction with a non-solvent in solution (precipitability γ), kinetic interaction in a dilute solution (solution viscosity [η]), and kinetic interaction in a condensed polymer phase (melt viscosity μ).
(2) [η]-γ relationship is established experimentally.
(3) μ-T-[η] relationships are established experimentally.
Strongly Radioactive Springs Discovered in Masutomi
Authors: Kuroda Kazuo 
Published: July 2006

Abstract
(1) A number of strongly radioactive springs were discovered in Masutomi, Yamanasi Prefecture.
(2) The radon content of a number of very small springs near spring A8 and A9 at Higurasi-no-huti was measured. On No. 88 day, spring A84 showed a content of 7130 Mache. On the same day the radon content of spring A9 (when the water sample was drawn with an injector from the inner part of the exit of the spring) registered 6870 Mache.
(3) A strongly radioactive spring was discovered in Masutomi on No. 155 day, the radon content of which (spring A49, Dairokuten-no-izumi) is supposed to be always 3000 to 4000 Mache, although values higher than 5000 Mache were obtained at the time the sample was drawn, a small injector used.
(4) The radon, chlorine, carbon dioxide contents, the amount of the flow and the water temperature, of spring A2 were measured daily during the period between No. 74 day and No. 89 day, and the effect of snow on the radon content, together with the chemical composition of the mineral springs was studied. The variation in the radon content of this spring is explained by assuming that the original mineral spring was diluted by thaw water.
(5) The radon content of spring A9 was measured daily during the period between No. 1 day and No. 98 day.
(6) The radon content of spring A9 fluctuated between 1030 and 1900 Mache during this period.
(7) The radon content increases after snow or rain.
(8) The higher the water temperature the higher the radon content
(9) The variation in the chlorine, bicarbonate, and the carbon dio？ide contents were also measured daily during this period.
(10) On No. 136 day, the radon content of spring A9 registered 12000 Mache.
(11) In winter, on very cold and clear days after snow, the radon content is very low in the morning, increases in the day-time with the thawing of the frozen ground, and suddenly diminishes in the evening when the ground freezes again.
(12) The radon content of frozen mineral water was measured.
(13) [Rn/CO2] ratio in the mineral springs of Masutomi was dis？ussed.
(14) It was very difficult ascertain any marked relation between the variations in the radon content of the mineral springs of Masutomi and the small earthquakes that occurred in Yamanasi Prefecture, during the period of this investigation.
(15) The total analyses of spring A9 and spring A49 were intended.
(16) A general survey of our investigation into the minute constituents of the mineral springs of Masutomi was made.
(17) The chemical composition of the sinter of spring A6 is des？ribed.
THE SORPTION OF GAS BY CHARCOAL AS A DISSOLUTION PHENOMENON
Authors: Sameshima Jitsusaburo 
Published: July 2006

Abstract
1. The velocities of absorptions of carbon dioxide by the granular and the powder charcoals have been measured.
2. The velocity of absorption by the granular charcoal is smaller than that by the powder one.
3. It was confirmed that the absorption amounts by the granular and by the powder charcoal are the same.
4. The solubility of carbon dioxide in one gram of pure cane sugar charcoal at 25.0° and under 760 mm. has been determined to be 54.0 c.c. (N.T.P.).
5. The amounts of absorptions of carbon dioxide by various kinds of charcoals have been measured. Most of them absorb nearly equal amount of the gas, notwithstanding the divergence of the materials from which the charcoals were made.
6. The amounts of absorptions of carbon dioxide by bamboo charcoal at various temperatures and pressures have been measured.
7. The fact that the amorphous substance absorbs more gas than the crystalline one has been interpreted.
8. All of the facts mentioned above favoured the dissolution theory for the sorption of gas by charcoal.
THE ACTIVITY OF PHENOL IN AQUEOUS SALT SOLUTIONS
Authors: Endo Kwantaro 
Published: July 2006

Abstract
1. From the measurements on the partition of phenol between benzene and the aqueous solutions of neutral salts, it has been found that the following logarithmic law practically holds,
(Remark: Graphics omitted.)
Applying this to the equation of the chemical potential of phenol it becomes
(Remark: Graphics omitted.)
We have also obtained an equation of phenol distribution between benzene and water in the presence of neutral salts at 25°C:
B=2.272×10βSC+37.71×103βSC3.
2. From the measurements of the freezing points of the aqueous phenol solutions in the presence of a neutral salt, it has qualitatively been proved that the chemical potential of phenol can be expressed in the following formula,
X=Z0+αS+RTlnC
and the activity coefficient of phenol is, therefore, to be expressed as
(Remark: Graphics omitted.)
THE FORMATION OF A COMPLEX ION IN THE AQUEOUS SOLUTION OF SILVER NITRATE AND PHENOL
Authors: Endo Kwantaro 
Published: July 2006

Abstract
1. From the measurement of partition of phenol between benzene and the aqueous solution of silver nitrate, it was found that the silver nitrate elevates considerably the solubility of phenol in the aqueous solution contrary to the salting out effects of other ordinary salts.
2. From the measurements of the depression of freezing point of the aqueous solutions of these substances, it has been proved that the “salting in” action of silver nitrate is due to the formation of a complex ion, [Ag.C6H6O]., in the aqueous solution and the chemical equilibrium, Ag^.+C_6H_5OH=[Ag.C_6H_6O]^., is established there.
THE EFFECT OF CAUSTIC ALKALI ON THE OXIDATION OF STANNOUS CHLORIDE WITH AIR
Authors: Miyamoto Susumu 
Published: July 2006

Abstract
(1) The oxidation velocity of stannous chloride in alkaline solutions with air was studied. It was found to be the same as that of sodium sulphite when the concentration of alkali is greater than about 0.2 normal under the given condition.
(2) The effect of temperature was small.
(3) The dissolution velocity of oxygen in alkaline solutions was calculated indirectly.
THE VISCOSITY OF LIQUIDS ABOVE THEIR BOILING POINTS. PART IV
Authors: Titani Toshizo 
Published: July 2006

Abstract
1. The constant B, the effective molecular volume, is additive.
2. The respective constant in the volume and temperature relations becomes independent of the nature of the substance when it is expressed in reduced form.
3. From the volume and temperature relations of the molecular fluidity the reduced equations of the following form have been obtained.
(Remark: Graphics omitted.)
SPECTROCHEMICAL STUDIES OF HYDROXYAZO-COMPOUNDS. PART IV
Authors: Uemura Taku , Tabei Shozo 
Published: July 2006

Abstract
(1) Tautomeric transformations may occur when the neutral solution of these tolueneazo-cresols change into the alkaline.
(2) The dilute neutral solution of these compounds is generally yellow and becomes deep yellow or orange when the solution is alkaline.
(3) We can respectively give A(azo)- and R(red)-forms to these tautomers.
(4) There is one absorption band when hydroxyl-group in cresol ring takes para-position with regard to the azo-group, and two bands when ortho-position.
(5) The methyl-group has a hyperchromic influence, but when added to an already methylated compound, it ceases to be effective in the absorption curve.
(6) So far as the present studies are concerned, the methyl-group does not specially represent its influence with regard to the position.
THE EFFECT OF HYDROCHLORIC ACID ON THE OXIDATION OF STANNOUS CHLORIDE WITH AIR
Authors: Miyamoto Susumu 
Published: July 2006

Abstract
1. The oxidation velocity of stannous chloride in hydrochloric acid with air was studied. When the concentration of hydrochloric acid is smaller than about 0.25 normal, the reaction seems to be between first and zero order. When the concentration of hydrochloric acid is greater than about 0.25 normal, the velocity is independent of the concentration of stannous chloride.
2. The effect of temperature is small.
3. The dissolution velocity of oxygen into hydrochloric acid of various concentrations was obtained indirectly.
THE EFFECT OF ALKALI ON THE OXIDATION OF FERROUS HYDROXIDE WITH AIR
Authors: Miyamoto Susumu 
Published: July 2006

Abstract
The velocity of the oxidation of ferrous hydroxide with air was found to be independent of the quantity of ferrous hydroxide in a definite volume.
The effect of temperature on the reaction was small.
Caustic alkali does not promote the oxidation, and on the contrary, it decreases the velocity of oxidation, notwithstanding the reducing power of ferrous hydroxide increases with the increase of the concentration of alkali. From this result, we may suppose that the increase of the velocity of oxidation of carbohydrates or nickelous hydroxide by the addition of caustic alkali is not due to the increase of the velocity of primary reaction.
On the Color Reaction Between Iodine and the Basic Acetates of Some Rare Earth Elements
Authors: Kimura Kenjiro , Ikeda Nagao 
Published: July 2006

Abstract
(1) The color reaction between iodine and basic acetate is not, as is often believed, peculiar to lanthanum. It is shown also by praseodymium, neodymium and samarium.
(2) The absorption maximum of iodine-basic acetate shifts to shorter wave-length side with the decrease of the basicity of the rare earth elements.
(3) The color change of iodine-basic acetate with the lapse of time was studied photometrically.
(4) It was confirmed that the sorption isotherm holds good in the cases of the basic acetates of lanthanum, praseodymium and neodymium.
(5) The effect of other ions on the color reaction was discussed.
Studies on Synthetic Polyamides (VI) Dimeric ε-Caprolactam
Authors: Hoshino Kôhei 
Published: July 2006

Abstract
The fluffy sublimate (m. p. 341–342°), byproduct of the polymerization of ε-caprolactam, is shown to be neutral cyclic dimeric capramide (IV) (a 14-membered ring compound).
Malhelpa Afiniteco de Benzedrino-Deriva\^{j}oj al Amino-oksidazo
Authors: Ôta Jukito 
Published: July 2006

Abstract
(1) The competitive inhibitation of benzedrine and similar compounds upon amine oxidase was manometricalJy studied.
(2) The relation between the inhibiting action and the constitution of these amines was discussed.
The Theory of the Rubber-like Elasticity in Monolayers
Authors: Suzuki Keiz\={o} 
Published: July 2006

Abstract
A discussion is made on the structure of the monolayer of the rubber-like highpolymer, and the equation of state is derived from the statistical theory. The extraordinarily large compressibility and the inverse temperature effect observed in the experiment are explained to be the expressions of the rubber-like elasticity. The theory is not a simple translation of the 3-dimensional theory to the 2-dimensional one.
The Reaction of Aluminum Sulfate and Calcium Carbonate. I. Preparation of Basic Aluminum Sulfate Sol and its Hydrolysis
Authors: Kuwata Tsutomu , Nakazawa Tadahisa 
Published: July 2006

Abstract
1. By the moderate reaction of calcium carbonate and the concentrated solution of aluminum sulfate, highly basic aluminum sulfate sol is easily obtained.
2. Some kinds of the basic aluminum sulfate sol become gel on heating and the sol-gel transformation is perfectly reversible at the neighbourhood of 40-50°C.
3. On dilution with water, the highly basic aluminum sulfate (SO3/Al2O3=1.1–1.6) hydrolyses and precipitates the insoluble basic aluminum sulfate (SO3/Al2O3=0.5–0.6).
Fundamental Studies on the Current-Voltage Curve in Polarography. II
Authors: Tamamushi Reita , Tanaka Nobuyuki 
Published: July 2006

Abstract
In this paper authors have derived the equations of the polarographic current-voltage curve from the standpoint of chemical kinetics, assuming that the net electrode process is activation-controlled. The results obtained are summarized as follows:
(1) Half-wave potential is the constant of the substance concerned, and is independent of its activity.
(2) The potential where the current is equal to zero is only defined by the activities of the oxidant and the reductant in the body of the solution.
(3) The inflection point of the cathodic or anodic wave agrees with its half-wave potential.
(4) The relation between log(I⁄Id–I) and V of the cathodic or anodic wave is a straight line.
The values of ΔF1, ΔF2 and a possible to be caluclated from the experimental date.
(6) The theoretical curve is essentially the same as the experimental curve of the irreversible type.