Process of Producing Perhalates Page: 2 of 4
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
UNITED STATESPATENT OFFICE.
EUGENE PAUL SCHOCH AND RUFUS HUBBARfl PRITCHETT, OP AUSTIN, TEXAS.
PROCESS OF PRODUCING PERHALATES.
1,279,593. Specification of Let'teis Patent. Patented Sept. 24,115.
Application fled April 18, 1918. Serial No. 229,382.To all whom it may concern:
Be it -known that we, EUGENE PAUL
SCHCnC and RUFUs HUBBARD PRITCHETT,
both citizens of the United States, both re-
5 siding at Austin, in the county of Travis
and State of Texas, have invented certain
new and useful Improvements in Processes
of Producing Perhalates; and we do hereby
declare the following to be a full, clear, and
10 exact description of the invention, such as
will enable others skilled in the art to which
it appertains to make and use the same.
This invention relates to a process of pro-
ducing perhalates, and especially perchlo-
15 rates, and their corresponding acids, through
the use of an anode composed essentially of
carbon, or silicon, and has for its object to
provide a method which will be simple to
carry out and more economical in practice
20 than those heretofore proposed.
With these and other objects in view the
invention consists in the novel steps and
combinations of steps' involving the use of
a carbon or silicon anode, and constituting
25 the process, all as will be more fully herein-
after disclosed and particularly pointed out
in the claims.
Referring to the accompanying drawings
forming a part of this specification in which
so like numerals designate like parts in all the
views:---
Figure 1 is a diagrammatic sectional view.
of an apparatus, suitable for carrying out
the invention; and-
35 Fig. 2 is a plan view of the parts shown
in Fig. 1.
1 indicates any suitable container, 2 any
suitable electrolyte, such for example, as
sodium chlorate, NaClOs, which may have
40 an impurity such as sodium chlorid mixed
therewith, 3 any suitable carbon or silicon,
or chemically similar anode, 4 any suitable
metallic cathode such as copper gauze,
nickel, iron, etc., and 5 a porous cup or other
45 diaphragm surrounding the cathode 4, to
separate the anode liquid from the cathode.
In order that .the precise invention may
be the more cleanly understood it is said:-
Prior to our invention, it has been errone-
50 ously believed that no commercial quantity
of perchlorates could be produced in an elec-
trolytic cell using a carbon anode.' This,
erroneous belief has been founded partly on
the fact that the oxygen liberated at the car-
85 bon anode in an, acid solution 'gives rise to
a disintegration7 or oxidation, of the carbonmaterial; and hence it was thought that such
disintegration would be sufficient to destroy
the anode to such an extent as to make the
process impracticable commercially. 60
Winteler, in Zeitschrift filr Elektroche-
mie, vol. 7 of 1901, p. 635, is authority for,
and is probably one of the chief sources of
the belief that a carbon anode cannot be
substituted for platinum anode in an acid 65
electrolyzing solution when producing per-
chlorates on a commercial scale.
Further, it is a well recognized fact, that,
if the solution is maintained neutral or al-
kaline throughout the process, the discharge 70
potential from a carbon anode will not be
great enough to commercially form per-
chlorates. Winteler really recognizes this
fact also, for he states broadly that per-
chlorates cannot be formed at all with car- 75
bon electrodes.
We have discovered, on the other hand,
that it is perfectly feasible to substitute car-
,bon,- or silicon, for platinum as anodes, in
the. commercial production of perchlorates, 80
and that therefore the present' very high
cost that the use of platinum entails may be
avoided, not only in the commercial produc-
tion of perchlorates in general, but also in
the commercial production of perhalates. 85
In carrying out our process, we employ an
anode consisting essentially of carbon, or of
silicon, and prefer to start with an acid
solution of the chlorate corresponding to
the perhalate to be made, but of course, we 90
may start with a neutral, or even an alka-
line solution, and permit the action of the
current td render the solution acid .as the
process proceeds.
Referring to the drawings, we prefer to 95
employ a current strength of from say"three
to twenty amperes per one hundred square
centimeters on the anode surface, and it is
also preferred to keep the solution cold dur-
ing the entire process. As the current passes 100
the usual cathode reactions take place in the
hydroxid solution 6, provided of course, such
a solution surrounds the cathodes 4; and at
the anode 3 likewise, the usual reactions will
take place' which in this case consists of the 105
discharge of the oxygen ions from the wa-
ter, and the reaction of this oxygen with
the chlorate ions at the surface of the carbon
anode. This last mentioned reaction will
form perchlorate ions and free electrons 110
which pass out through the pole. The hy-
drogen ions 'left from the: water molecules.
Upcoming Pages
Here’s what’s next.
Search Inside
This patent can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Patent.
Schoch, Eugene Paul. Process of Producing Perhalates, patent, September 24, 1918; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1257001/m1/2/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.