Combination of a guard bed and a copper-containing catalyst bed

Details Combination of a guard bed and a copper-containing catalyst bed Combination of a guard bed and a copper-containing catalyst bed

2006-12-12

2006-12-12

Wood, Elizabeth D. (Department: 1755)

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

Catalyst or precursor therefor

Inorganic carbon containing

C502S174000, C502S180000, C502S182000, C423S437100, C423S437200, C423S648100, C423S650000, C423S651000, C423S655000, C423S656000

Reexamination Certificate

active

07148178

ABSTRACT:
A catalyst bed combination comprising a bed of a particulate copper-containing catalyst and, upstream of the catalyst bed, a guard bed in the form of shaped units formed from lead oxide particles and a particulate support material. The guard bed extends the life of the copper catalyst by absorbing halide contaminants in the process stream.

REFERENCES:
patent: 4849576 (1989-07-01), Nowack et al.
patent: 4849577 (1989-07-01), Boitiaux et al.
patent: 2001/0027939 (2001-10-01), Didillon et al.
patent: 2002/0128329 (2002-09-01), Watson
patent: 2004/0072682 (2004-04-01), Watson
patent: 1 357 335 (1974-06-01), None
patent: WO-01/17674 (2001-03-01), None
patent: WO-02/066156 (2002-08-01), None

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