Chemistry of inorganic compounds – Zeolite – Isomorphic metal substitution
Reexamination Certificate
2009-07-07
2010-12-28
Group, Karl E (Department: 1793)
Chemistry of inorganic compounds
Zeolite
Isomorphic metal substitution
C423S700000, C423S701000, C502S064000, C502S439000
Reexamination Certificate
active
07858069
ABSTRACT:
A method of modifying an alkylation catalyst to reduce the formation of condensed hydrocarbon species thereon. The method comprises providing an alkylation catalyst comprising a plurality of active sites. The plurality of active sites on the alkylation catalyst may include a plurality of weakly acidic active sites, intermediate acidity active sites, and strongly acidic active sites. A base is adsorbed to a portion of the plurality of active sites, such as the strongly acidic active sites, selectively poisoning the strongly acidic active sites. A method of modifying the alkylation catalyst by providing an alkylation catalyst comprising a pore size distribution that sterically constrains formation of the condensed hydrocarbon species on the alkylation catalyst or by synthesizing the alkylation catalyst to comprise a decreased number of strongly acidic active sites is also disclosed, as is a method of improving a regeneration efficiency of the alkylation catalyst.
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Ginosar Daniel M.
Petkovic Lucia M.
Battelle Energy Alliance, LLC
Group Karl E
TraskBritt
Wiese Noah
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