Reduction of spalling in mixed metal oxide desulfurization sorbe

Details Reduction of spalling in mixed metal oxide desulfurization sorbe Reduction of spalling in mixed metal oxide desulfurization sorbe

1996-08-16

1997-12-02

Caldarola, Glenn

Catalyst, solid sorbent, or support therefor: product or process

Solid sorbent

502400, 502405, 502407, 502302, 4235731, B01J 2000, B01J 2002, B01J 2300, B01J 2018

Patent

active

056935889

ABSTRACT:
Mixed metal oxide pellets for removing hydrogen sulfide from fuel gas mixes derived from coal are stabilized for operation over repeated cycles of desulfurization and regeneration reactions by addition of a large promoter metal oxide such as lanthanum trioxide. The pellets, which may be principally made up of a mixed metal oxide such as zinc titanate, exhibit physical stability and lack of spalling or decrepitation over repeated cycles without loss of reactivity. The lanthanum oxide is mixed with pellet-forming components in an amount of 1 to 10 weight percent.

REFERENCES:
patent: 4001375 (1977-01-01), Longo
patent: 5326737 (1994-07-01), Kay et al.
patent: 5494880 (1996-02-01), Siriwardane

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