HZSM-5沸石的改性及其对甲醇转化制丙烯反应的影响  

Modification of HZSM-5 zeolite and its effect on methanol to propylene reaction

作　　者：谭亚南[1] 韩伟[1] 何霖[1] 林荆[1] 

机构地区：[1]西南化工研究设计院国家碳一化学工程技术研究中心工业排放气综合利用国家重点实验室,成都610225

出　　处：《天然气化工—C1化学与化工》2010年第6期13-15,共3页Natural Gas Chemical Industry

摘　　要：通过对HZSM-5沸石分子筛进行磷/铈/钾的改性,并在固定床微反装置中进行甲醇转化制丙烯的反应研究,探讨了催化剂酸性对反应的影响规律。结果表明,钾离子改性能够部分减少ZSM-5沸石分子筛的强酸中心,而对弱酸中心则无明显的影响,从而大大提高了催化剂对甲醇制丙烯的反应催化性能。HZSM-5 zeolite was modified by impregnating phosphate,cerium and/or potassium,and the performances of the modified catalysts for methanol to propylene reaction were investigated in a fixed-bed microreactor by which the effects of catalyst acidity on the reaction were analyzed.The results showed that potassium modification could partly eliminate the strong acid sites of HZSM-5 zeolite without distinct influence on its weak acid sites,which led to better catalytic performance of the catalyst for the reaction.

关 键 词：改性 催化剂 钾 酸性 甲醇 丙烯 MTP 

分 类 号：O643.32[理学—物理化学]