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Title: Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides

Abstract

Alkali metals and sulfur may be recovered from alkali monosulfide and polysulfides in an electrolytic process that utilizes an electrolytic cell having an alkali ion conductive membrane. An anolyte includes an alkali monosulfide, an alkali polysulfide, or a mixture thereof and a solvent that dissolves elemental sulfur. A catholyte includes molten alkali metal. Applying an electric current oxidizes sulfide and polysulfide in the anolyte compartment, causes alkali metal ions to pass through the alkali ion conductive membrane to the catholyte compartment, and reduces the alkali metal ions in the catholyte compartment. Liquid sulfur separates from the anolyte and may be recovered. The electrolytic cell is operated at a temperature where the formed alkali metal and sulfur are molten.

Inventors:
Issue Date:
Research Org.:
Field Upgrading Limited, Calgary, CA
Sponsoring Org.:
USDOE
OSTI Identifier:
1490855
Patent Number(s):
10087538
Application Number:
15/279,926
Assignee:
FIELD UPGRADING LIMITED (Calgary, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
DOE Contract Number:  
FE0000408
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Sep 29
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Gordon, John Howard. Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides. United States: N. p., 2018. Web.
Gordon, John Howard. Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides. United States.
Gordon, John Howard. Tue . "Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides". United States. https://www.osti.gov/servlets/purl/1490855.
@article{osti_1490855,
title = {Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides},
author = {Gordon, John Howard},
abstractNote = {Alkali metals and sulfur may be recovered from alkali monosulfide and polysulfides in an electrolytic process that utilizes an electrolytic cell having an alkali ion conductive membrane. An anolyte includes an alkali monosulfide, an alkali polysulfide, or a mixture thereof and a solvent that dissolves elemental sulfur. A catholyte includes molten alkali metal. Applying an electric current oxidizes sulfide and polysulfide in the anolyte compartment, causes alkali metal ions to pass through the alkali ion conductive membrane to the catholyte compartment, and reduces the alkali metal ions in the catholyte compartment. Liquid sulfur separates from the anolyte and may be recovered. The electrolytic cell is operated at a temperature where the formed alkali metal and sulfur are molten.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}

Works referenced in this record:

Dentrite-Free Electrochemical Deposition of Li–Na Alloys from an Ionic Liquid Electrolyte
journal, January 2006


Cation Electrochemical Stability in Chloroaluminate Ionic Liquids
journal, October 2005


Lithium ion conducting Li4−2xGe1−xSxO4 solid electrolytes
journal, August 1993


Electrochemical Investigation of Quaternary Ammonium/Aluminum Chloride Ionic Liquids
journal, January 2004


Polymer composite electrolytes containing ionically active mesoporous SiO2 particles
journal, September 2007


Conduction paths in sintered ionic conductive material Na1+xYxZr2−x(PO4)3
journal, October 1981


Crystal structures and crystal chemistry in the system Na1+xZr2SixP3−xO12
journal, February 1976


Ionic-liquid materials for the electrochemical challenges of the future
journal, July 2009


Selective sodium removal from aqueous waste streams with NaSicon ceramics
journal, May 1999


Li+ and Na+ transfer through interfaces between inorganic solid electrolytes and polymer or liquid electrolytes
journal, August 2005


The Role of Additives in the Electroreduction of Sodium Ions in Chloroaluminate-Based Ionic Liquids
journal, January 2005


The comparative structure, properties, and ionic conductivity of LiI+Li2S+GeS2 glasses doped with Ga2S3 and La2S3
journal, March 2008


Crystal chemistry of the Na1+xZr2−xLx(PO4)3 (L = Cr, In, Yb) solid solutions
journal, March 1981


Preparation and characterization of lithium-ion-conductive Li1.3Al0.3Ti1.7(PO4)3 thin films by the solution deposition
journal, February 2003


Desulphurization of gasoline by metallic sodium
journal, July 1976


High temperature naphthenic acid corrosion of steel in high TAN refining media
journal, September 2008


Lithium insertion into manganese dioxide electrode in MnO2/Zn aqueous battery
journal, May 2004


Li-air batteries: A classic example of limitations owing to solubilities
journal, January 2007


LiTi2(PO4)3 with NASICON-type structure as lithium-storage materials
journal, October 2003


Superionic Conductivity in a Lithium Aluminum Germanium Phosphate Glass–Ceramic
journal, January 2008


The preparation and characterization of dense, highly conductive Na5GdSi4O12 nasicon (NGS)
journal, December 1980


Fast Na+-ion transport in skeleton structures
journal, February 1976


High Voltage Lithium Polymer Cells Using a PAN-Based Composite Electrolyte
journal, January 2002


Chemistry and properties of solids with the [NZP] skeleton
journal, September 1993


The Electrolysis of Sodium Sulphide Solutions
journal, December 1928


Li1.3Al0.3Ti1.7(PO4)3 filler effect on (PEO)LiClO4 solid polymer electrolyte
journal, January 2005


Characterization of the Lithium/Oxygen Organic Electrolyte Battery
journal, January 2002