PROCESS AND CATALYST FOR C8 ALKYLAROMATIC ISOMERIZATION
摘要
A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on MTW-type zeolite is disclosed. Preferably the two metals are platinum and tin. The invention obtains a stable and improved yield of xylenes such as para-xylene without excess benzene production by dealkylation. The zeolitic silica-to-alumina ratio ranges from 20 to 45. Use of MTW substantially free of mordenite improves yields and integrated aromatics complex economics by reducing undesirable aromatic ring-loss reactions.
申请公布号
WO2005065380(A3)
申请公布日期
2005.11.24
申请号
WO2004US43952
申请日期
2004.12.29
申请人
UOP LLC;LEON-ESCAMILLA, E., ALEJANDRO;BOGDAN, PAULA, L.;BAUER, JOHN, E.;MAHER, GREGORY, F.;LARSON, ROBERT, B.
发明人
LEON-ESCAMILLA, E., ALEJANDRO;BOGDAN, PAULA, L.;BAUER, JOHN, E.;MAHER, GREGORY, F.;LARSON, ROBERT, B.