摘要
以对二甲苯为原料,考察了交换型和浸渍型碱金属沸石上对二甲苯-甲醇的侧链烷基化反应.结果表明,在 Rb^+、Cs^+浸渍的 LiX、NaX、KX 沸石上选择性地进行侧链烷基化;而在 LiX、NaX 沸石上则选择性地进行苯核烷基化;在 KX 沸石上两类反应都发生,但以苯核烷基化为主.本文还用 CNDO/2方法就反应物电子性质对反应选择性的影响进行了探讨。
The side-chain alkylation of p-xylene with methanol was studied overalkali cation exchanged and impregnated zeolites.It was found that the side-chain alkylation take place on LiX,NaX and KX impregnated with Rb^+ or Cs^+whereas benzene-core alkylation occurs on LiX and NaX.Both reactions pro-ceeded on KX with the benzene-core alkylation being dominant.A quantumchemical study on the effect of electronic nature of aromatics on the selecti-vity of the reaction was also been made by CNDO/2(complete neglect of diffe-rential overlap)method.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
1990年第3期60-66,共7页
Acta Petrolei Sinica(Petroleum Processing Section)
