Manufacture of a Preparation of Manganese.
Year: 1899

page_text: Manufacture of a Preparation of Manganese.
I, THOMAS MACALPINE, of 22, Sutton Court Road, Chiswick, Middlesex, Doctor
of Science, Consulting and Research Chemist, do hereby declare the nature of
this invention to be as follows:-
-
I produce acetylene gas by any of the usual methods, preferably by the mutual
decomposition of water and calcium carbide, I then pass the acetylene gas over
or into a solution of the oxides, hydrates, or carbonates of calcium, barium,
magnesium, sodium, potassium or ammonium, or, where any of the above
mentioned substances are not readily soluble in water, I suspend them in that
medium, and, with or without agitation pass the acetylene gas into or over the
medium containing the suspended material.
Or, alternatively, I deliver the calcium carbide directly into the solution of
the above mentioned oxides, hydrates, or carbonates, or of those in suspension,
with or without agitation.
To the solution (partially or fully saturated with acetylene gas) of the above
mentioned oxides, hydrates or carbonates, or of the above mentioned suspended
substances, I add a solution of the permanganates, or manganates, of lime, barium,
magnesium, sodium, potassium or ammonium.
In practice I find it convenient to take a solution in water of carbonate of
sodium or carbonate of potash, or a solution containing a mixture of both of these
salts, and saturate it with acetylene gas.
To one or a mixture of two of these solutions, I add a solution of perman-
ganate of potash, preferably not allowing the permanganate of potash to be in
excess. I may use a solution of the above mentioned alkalies of about 1,07
specific gravity and after treatment with permanganate of potash permit the
saturation by acetylene gas to go on intermittently for some time, which causes
a precipitate of a manganese compound to be thrown down which I separate and
obtain by filtration. It is not necessary to use a solution of the specific gravity
mentioned above, as the reactions take place with equal facility with solutions of
any density.
I find it convenient to use all the above solutions at the ordinary temperature
of the atmosphere, but I may raise the temperature to any degree, of one or
both of the solutions, without affecting the process, and I may, for the purpose of
greater speed of absorption, introduce the acetylene gas under pressure, the speed
of absorption being correspondingly increased in ratio with the pressure employed.
Dated this 15th day of February 1899.
FREDERIC PRINCE,
Agent for Applicant.

page_text: I, THOMAS MACALPINE, of 22, Sutton Court Road, Chiswick, Middlesex, Doctor
of Science, Consulting and Research Chemist, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement..
I produce acetylene gas by any of the usual methods preferably by the mutual
decomposition of water and calcium carbide, I then pass the acetylene gas over
or into a solution of the oxides, hydrates or carbonates of calcium, barium,
magnesium, sodium, potassium or ammonium, or, where any of the above
mentioned substances are not readily soluble in water I suspend them in that
medium, in any known manner, and with or without agitation, pass the actcylene
gas into or over the medium containing the suspended material.
Or, alternatively, I deliver the calcium carbide directly into the solution of
the above mentioned oxides hydrates or carbonates, or of those in suspension.
with or without agitation, and thereby produce the acetylene gas directly in the
solution.
To the solution of the above mentioned oxides, hydrates or carbonates or of
the above mentioned suspended substances, partially or fully saturated with
acetylene gas, I add a solution of the permanganates or manganates of lime,
Larium, magnesium, sodium, potassium or ammonium.
f
In practice I find it convenient to take a solution in water of carbonate of
sodium or carbonate of potash, or a solution containing a mixture of both of these
salts, and saturate it with acetylene gas.
To one or a mixture of two of these solutions I add a solution of permanganate
of potash, not allowing the permanganate of potash to be in excess.
If the per-
manganate of potash is allowed to be in excess the product will be of a. different
character to what I desire, consisting more or less of a superoxide of manganese.
I prefer to use a solution of the above mentioned alkalies, of about 1.07 specific
gravity, and after treatment with permanganate of potash permit the saturation
by acetylene gas to go on intermittently for some time, which causes a precipitate
of a manganese compound to be thrown down which I may separate by filtration.
It is not necessary to use a solution of the specific gravity mentioned above, as
the reactions take place readily with solutions of any density.
I find it convenient to use all the above solutions at the ordinary temperature
of the atmosphere, but I may slightly raise the temperature of one or both of the
solutions, without affecting the process, and I may for the purpose of greater. speed
of absorption, introduce the acetylene gas under pressure, the speed of absorption
being correspondingly increased in ratio with the pressure employed.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim
18:-
"
The production of a preparation of manganese- from the ingredients stated in
the manner hereinbefore described.
FREDERIC PRINCE,
37, Cursitor Street, Chancery Lane, E.C., Agent for Applicant.