TY - GEN
T1 - Deactivation of La-X zeolites in isobutane/2-butene alkylation
AU - Sievers, Carsten
AU - Zuazo, Iker
AU - Guzman, Alexander
AU - Olindo, Roberta
AU - Lercher, Johannes A.
PY - 2007
Y1 - 2007
N2 - The reaction leading to deactivation of La-X zeolites in isobutane/2-butene alkylation was studied. In the beginning of the reaction, carbenium ions were formed on Brønsted acid sites. After 1.9 hr on stream these parameters become constant, and quantitative conversion of 2-butene was observed. The carbon content increased strongly due to the formation of polymerization products on Lewis acid sites outside the zeolite pores. The conversion of 2-butene started decreasing rapidly after 12.9 hr on stream rapidly. Analysis of the carbonaceous deposits showed that bicyclic compounds with alkyl side chains were the dominant species formed on the catalyst. This is an abstract of a paper presented at the AIChE Annual Meeting (Salt Lake, UT 11/4-9/2007).
AB - The reaction leading to deactivation of La-X zeolites in isobutane/2-butene alkylation was studied. In the beginning of the reaction, carbenium ions were formed on Brønsted acid sites. After 1.9 hr on stream these parameters become constant, and quantitative conversion of 2-butene was observed. The carbon content increased strongly due to the formation of polymerization products on Lewis acid sites outside the zeolite pores. The conversion of 2-butene started decreasing rapidly after 12.9 hr on stream rapidly. Analysis of the carbonaceous deposits showed that bicyclic compounds with alkyl side chains were the dominant species formed on the catalyst. This is an abstract of a paper presented at the AIChE Annual Meeting (Salt Lake, UT 11/4-9/2007).
UR - http://www.scopus.com/inward/record.url?scp=58049126040&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:58049126040
SN - 9780816910229
T3 - 2007 AIChE Annual Meeting
BT - 2007 AIChE Annual Meeting
T2 - 2007 AIChE Annual Meeting
Y2 - 4 November 2007 through 9 November 2007
ER -