Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Catalyst for elemental sulfur recovery process

Patent ·
OSTI ID:869719
 [1];  [2]
  1. Winchester, MA
  2. Cambridge, MA
+ Show Author Affiliations
A catalytic reduction process for the direct recovery of elemental sulfur from various SO.sub.2 -containing industrial gas streams. The catalytic process provides high activity and selectivity, as well as stability in the reaction atmosphere, for the reduction of SO.sub.2 to elemental sulfur product with carbon monoxide or other reducing gases. The reaction of sulfur dioxide and reducing gas takes place over a metal oxide composite catalyst having one of the following empirical formulas: [(OF.sub.2).sub.1-n (RO.sub.1)n].sub.1-k M.sub.k, [(FO.sub.2).sub.1-n (RO.sub.1.5).sub.n ].sub.1-k M.sub.k, or [Ln.sub.x Zr.sub.1-x O.sub.2-0.5x ].sub.1-k M.sub.k wherein FO.sub.2 is a fluorite-type oxide; RO represents an alkaline earth oxide; RO.sub.1.5 is a Group IIIB or rare earth oxide; Ln is a rare earth element having an atomic number from 57 to 65 or mixtures thereof; M is a transition metal or a mixture of transition metals; n is a number having a value from 0.0 to 0.35; k is a number having a value from 0.0 to about 0.5; and x is a number having a value from about 0.45 to about 0.55.
Research Organization:
Massachusetts Institute of Technology (Cambridge, MA)
DOE Contract Number:
FG22-92PC92534
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Number(s):
US 5384301
OSTI ID:
869719
Country of Publication:
United States
Language:
English

References (8)

Preparation of Cerium Dioxide Powders for Catalyst Supports journal February 1988
Removal of Sulfur Dioxide from Stack Gases by Catalytic Reduction to Elemental Sulfur with Carbon Monoxide journal January 1973
Sulfuric Acid Plants for Copper Converter Gas book April 1975
Preparation of Highly Dispersed Mixed Oxides and Oxide Solid Solutions by Pyrolysis of Amorphous Organic Precursors journal January 1970
Catalytic Reduction of Sulfur Dioxide on Iron-Alumina Bifunctional Catalysts journal June 1971
The Allied Chemical Sulfur Dioxide Reduction Process for Metallurgical Emissions book April 1975
Catalytic Reduction of Sulfur Dioxide with Carbon Monoxide on Cobalt Oxides journal December 1975
Flue gas desulphurisation: Catalytic removal of sulphur dioxide by carbon monoxide on sulphided La1−xSrxCoO3 journal July 1988

Similar Records

Catalyst for elemental sulfur recovery process
Patent · Mon Jan 23 23:00:00 EST 1995 · OSTI ID:6884348
Process for the catalytic oxidation of hydrogen sulfide with sulfur dioxide
Patent · Mon Dec 12 23:00:00 EST 1977 · OSTI ID:6662248
Ultra low thermal expansion, highly thermal shock resistant ceramic
Patent · Sun Dec 31 23:00:00 EST 1995 · OSTI ID:870277

Related Subjects

-containing
-containing industrial
/502/423/
1-k
1-n
1-x
2-0
35
45
55
57
5x
65
activity
alkaline
alkaline earth
atmosphere
atomic
carbon
carbon monoxide
catalyst
catalytic
catalytic process
catalytic reduction
composite
composite catalyst
dioxide
direct
direct recovery
earth
earth element
earth oxide
element
elemental
elemental sulfur
empirical
fluorite-type
following
formulas
gas
gas stream
gas streams
gases
iiib
industrial
industrial gas
ln
metal
metal oxide
metals
mixture
mixtures
monoxide
oxide
oxide composite
process
process provides
product
provides
rare
rare earth
reaction
recovery
recovery process
reducing
reducing gas
reducing gases
reduction
reduction process
represents
selectivity
stability
streams
sulfur
sulfur dioxide
sulfur product
sulfur recovery
takes
transition
transition metal
transition metals
value
various
zr