论文部分内容阅读
一、前言近些年来,各国学者对ZSM—5沸石的独特结构产生了浓厚的兴趣,并开发了一系列新的择形选择性催化剂。对ZSM—5系沸石的改性,以调变其酸性及孔道大小来适应不同类型催化反应的要求更是引人注目。在甲醇转化成烃的过程中,存在着许多复杂的反应步骤,至今对甲醇转化成低碳烯烃的机理远未揭示清楚,而且对沸石催化剂在甲醇转化为低碳烯烃中的作用,各国研究者的看法亦不完全相同,其焦点就在于如何
I. Introduction In recent years, scholars from various countries have taken a keen interest in the unique structure of ZSM-5 zeolite and developed a series of new selective catalysts for shape-selective. Modification of ZSM-5 zeolite to adjust its acidity and pore size to adapt to different types of catalytic reactions is even more compelling. There are many complex reaction steps involved in the conversion of methanol to hydrocarbons. To date, the mechanism for the conversion of methanol to light olefins is far from clear and the role of zeolite catalysts in the conversion of methanol to light olefins has been demonstrated by researchers in various countries The view is not exactly the same, the focus is on how