Collection of Czechoslovak Chemical Communications p. 337 - 346 (1997)
Update date:2022-08-11
Topics:
Krtil, Jan
Cejka, Jiri
Wichterlova, Blanka
The effect of zeolite silylation using tetraethyl and tetramethyl orthosilicate on the enhancement of para-selectivity and of yields of p-ethyltoluene in toluene alkylation with ethylene was investigated for different Si loadings. It was found that zeolite silylation caused a substantial increase in the selectivity and yield of p-ethyltoluene. Data on changes in sorption capacity, in the number of surface and inner strong acid OH groups, in the rate of uptake of p-ethyltoluene together with the catalytic activity of zeolite and its deactivation indicate that the silylation is restricted to surface and subsurface zeolite layers. The enhancement of para-selectivity and yield of p-ethyltoluene are controlled predominantly by changes in geometry of pore openings and thus by transport rates of ethyltoluenes.
View MoreChengdu Daoerji Medical Technology Co., Ltd
Contact:86-28-85528891
Address:Southwest University For Nationalities,Wuhou District,Chengdu City,Sichuan Province
Contact:+86-0760-85282375
Address:zhongjing road,zhongshan torch hi-tech industrial development zone
Contact:86-379-63338609
Address:Jiudian Village,Deting Town,Song County,Luoyang
Hebei Think-Do Environment Co., Ltd
website:http://www.thinkdo-environment.com
Contact:0311-86510809
Address:No 6, Shilian Middle Street, Circular Chemical Industry Park
Jewim Pharmaceutical (Shandong) Co., Ltd
Contact:+8615621883869
Address:山东省泰安市高新技术产业开发区配天门大街西首
Doi:10.1135/cccc20011682
(2001)Doi:10.1007/BF01503530
(1911)Doi:10.1016/j.jmmm.2003.12.290
(2004)Doi:10.1002/jhet.5570210363
(1984)Doi:10.1055/s-0028-1087244
(2008)Doi:10.1021/om200687w
(2012)