US883141A - Process of electrolyzing aqueous stannic-chlorid solutions. - Google Patents
Process of electrolyzing aqueous stannic-chlorid solutions. Download PDFInfo
- Publication number
- US883141A US883141A US37829607A US1907378296A US883141A US 883141 A US883141 A US 883141A US 37829607 A US37829607 A US 37829607A US 1907378296 A US1907378296 A US 1907378296A US 883141 A US883141 A US 883141A
- Authority
- US
- United States
- Prior art keywords
- chlorid
- stannic
- solution
- solutions
- tin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 18
- 239000000243 solution Substances 0.000 description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 9
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- SURLGNKAQXKNSP-DBLYXWCISA-N chlorin Chemical compound C\1=C/2\N/C(=C\C3=N/C(=C\C=4NC(/C=C\5/C=CC/1=N/5)=CC=4)/C=C3)/CC\2 SURLGNKAQXKNSP-DBLYXWCISA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000283160 Inia Species 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/14—Electrolytic production, recovery or refining of metals by electrolysis of solutions of tin
Definitions
- an aqueous solution of stannic chlorid is electrolyzed by placing it in the cathode compartment of a diaphragm cell, While an aqueous solution containing primarily hydrochloric acid is used in the anode compartment.
- the catholyte preferably consists of a stannic chlorid solution having a specific gravity of about 1.2; the anolyte of a twenty per cent. hydrochloric acid solution, which may contain a small amount oi stannic chlorid.
- the cell may have Walls of slate, a diaphra m of porous earthenware, anodes'of graphite and cathodes of sheet tin.
- the preferred current density at the cathode is 4.2 am eres per square decimeter.
- the relatively high ionic ve ocity of the h drogen cation causes a gradual transfer 0i hydrochloric acid from the anode to the cathode compartment, until finally the currenpeiliciency begins to notably drop.
- the catholyte ma contain about eighteen per cent. of hydroc oric acid and a little stannic chlorid. Both solutions are thereupon removed from the cell and the old catholyte is transferred to the anode-compartment, its hydrochloric acid content be mg brou ht u to twenty per cent. by the addition 0 acid Stannic chlorid is added to the old anolyte until its specific gravity rises to 1.2 and it is then-placed in the cathode compartment. The initial cell-conditions are-thereby restored and the.
- electrolysis is hydrochloric acid anode solution and a tin chlorid cathode solution, until a considerable percentage of the hydrochloric acid has passed into said cathode solution, then addmg tin chlorid to said anode solution and passing an electric current through the two solutions in the opposite direction.
- tin chlorid solutions whichconsists in passing an electric current successively through an anode solution containing about twenty per cent. of hydrochloric acid and a cathode solution of tin chlorid, until a considerable percentage of the hydrochloric acid has passed into said cathode solution, then addmg tin chlorid to said anode solution and passing an electric current through the two solutions in the o posite direction.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
tion. I In detinning tin-plate scrap by the action.
I with insoluble anodes.
UNITED srnt ns PATENT, 4 OFFICE.
FRANZ VON KUGELGEN, OF HOLCOMBS ROCK, VIRGINIA, AND GEORGE 0. SEWARD, OF NEW YORK, N. Y.
Specification of Letters Patent.
Patented March 24, 1908.
Application filed June 10, 1907. Serial No. 378,296.
To all whom it may concern:
Be it known that we, FRANZ VON Kii- G-ELGEN, asubject of the Emperor of Germany, residing at Holcombs Rock, Vir inia, and GEORGE O. SEWARD, a citizen oi the United States, residing at New York city, New York, have invented certain new and useful Improvements in Processes of Electrolyzin Aqueous Stannic 4 Chlorid Solu tions, of whlch the following is a specificaof anhydrous chlorin, the tin is recovered as liquid stannic chlorid. This product may be.
efi'ectively decomposed into tin and chlorin bfy dissolving it in water and electrolyzing t e aqueous solution in a diaphragm cell, Such electrolysis proceeds smoothly at first, but after a time the anolyte becomes basic and the catholyte acid, decreasing the current efiiciency, whilea gelatinous precipitate may de osit in the anode compartment. This resu t is due to the fact that stannic chlorid is partially hydrolyzed' by water, with the production of stannic hydroxid and hydrochloric acid, which are therefore The difference in t e ionic velocities causes the concentration of the base and acid in the cell compartments to gradually change during electrolysis, until the amount of stannic hydroxid in the anode compartment is in excess of that which will remain in solution in the hydrated stannic chlorid.
According to the present process, an aqueous solution of stannic chlorid is electrolyzed by placing it in the cathode compartment of a diaphragm cell, While an aqueous solution containing primarily hydrochloric acid is used in the anode compartment. The catholyte preferably consists of a stannic chlorid solution having a specific gravity of about 1.2; the anolyte of a twenty per cent. hydrochloric acid solution, which may contain a small amount oi stannic chlorid. The cell may have Walls of slate, a diaphra m of porous earthenware, anodes'of graphite and cathodes of sheet tin. The preferred current density at the cathode is 4.2 am eres per square decimeter. As the electro sis procoeds, the relatively high ionic ve ocity of the h drogen cation causes a gradual transfer 0i hydrochloric acid from the anode to the cathode compartment, until finally the currenpeiliciency begins to notably drop.
resent in the electrolyte.
At this stage the catholyte ma contain about eighteen per cent. of hydroc oric acid and a little stannic chlorid. Both solutions are thereupon removed from the cell and the old catholyte is transferred to the anode-compartment, its hydrochloric acid content be mg brou ht u to twenty per cent. by the addition 0 acid Stannic chlorid is added to the old anolyte until its specific gravity rises to 1.2 and it is then-placed in the cathode compartment. The initial cell-conditions are-thereby restored and the. electrolysis is hydrochloric acid anode solution and a tin chlorid cathode solution, until a considerable percentage of the hydrochloric acid has passed into said cathode solution, then addmg tin chlorid to said anode solution and passing an electric current through the two solutions in the opposite direction.
tin chlorid solutions, whichconsists in passing an electric current successively through an anode solution containing about twenty per cent. of hydrochloric acid and a cathode solution of tin chlorid, until a considerable percentage of the hydrochloric acid has passed into said cathode solution, then addmg tin chlorid to said anode solution and passing an electric current through the two solutions in the o posite direction.
In testimony w iereof, we affix our signa tures in presence of witnesses.
FRANZ VON KUGELGEN. GEORGE O. SEWARD. Witnesses as to the signature of Franz von Kiigelgen:
HARRY RILEY LEE, J. H. WEBB. Witnesses as to the signature of George 0. Seward? JUs'rIN C. WALKER, (.lEo. F. SEWARI)- 2. The process of electrolyzing aqueous
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37829607A US883141A (en) | 1907-06-10 | 1907-06-10 | Process of electrolyzing aqueous stannic-chlorid solutions. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37829607A US883141A (en) | 1907-06-10 | 1907-06-10 | Process of electrolyzing aqueous stannic-chlorid solutions. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US883141A true US883141A (en) | 1908-03-24 |
Family
ID=2951580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US37829607A Expired - Lifetime US883141A (en) | 1907-06-10 | 1907-06-10 | Process of electrolyzing aqueous stannic-chlorid solutions. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US883141A (en) |
-
1907
- 1907-06-10 US US37829607A patent/US883141A/en not_active Expired - Lifetime
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