Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Reexamination Certificate
2009-04-20
2010-06-29
Nguyen, Cam N (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
C502S304000, C502S327000, C502S328000, C502S329000, C502S330000, C502S332000, C502S333000, C502S339000, C502S347000, C502S348000, C502S349000, C502S350000, C502S351000, C502S355000, C502S439000
Reexamination Certificate
active
07745370
ABSTRACT:
A catalyst for selective hydrogenation of acetylenes and diolefins, particularly in a raw gas feed stream for front end selective hydrogenation. The catalyst contains a low surface area carrier with a surface area from about 2-20 m2/g, wherein the pore volume of the pores of the carrier is greater than about 0.4 cc/g, at least 90 percent of the pore volume of the pores is contained within pores having a pore diameter greater than about 500 Å and about 1 to about 2 percent of the total pore volume is contained in pores with a pore diameter from about 500 to about 1,000 Å. The palladium comprises about 0.01 to about 0.1 weight % and a Group IB metal comprises about 0.005 to about 0.06 weight % of the catalyst.
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Blankenship Steven A.
Boyer Jennifer A.
Gildert Gary R.
Nguyen Cam N
Sud-Chemie Inc.
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