- 作者: 柯安男 ; 黃欽選
- 作者服務機構: 東海大學化學系
- 中文摘要:
The alkylation of ethylbenzene with methanol on various zeolites has been studied at atmospheric pressure, 300-500.degree.C and with ethylbenzene/methanol=3mol/mol in a fixed-bed, integral-flow reactor. The catalytic activity decreased in the order HZSM-5>HY>HM. The optimum conditions for the formation of ethyltoluene were HY zeolite, 400.degree.C and W/F=4.1 g-cat h/g-feed. The catalyst decay rate increased in the order HZSM-5<
93% para-selectivity). These results are interpreted in terms of diminution of both the strong acid sites and the pore size of zeolites. For the reaction on HY at 400.degree.C, the reaction paths were determined; the ethylbenzene reacted via alkylation, disproportionation and dealkylation with initial selectivities 84.7%, 13.1% and 2.2%, respectively. - 英文摘要: --
- 中文關鍵字: Alkylation; Ethylbenzene; Methanol; Zeolite; Para-Selectivity
- 英文關鍵字: 烷化;乙苯;甲醇;沸石;對位-選擇性