作者:Sara Zamanian、Ali Nemati Kharat
DOI:10.1016/s1872-2067(12)60751-7
日期:2014.2
was prepared by ion-exchange and impregnation methods, and its activity in the cyanoethylation of aliphatic and aromatic alcohols and amines was investigated. During the preparation of some samples, the transformation of zeolite Y into a pollucite-type phase occurred. This phase exhibited good activity in the cyanoethylation of aliphatic alcohols. The prepared solids modified by the impregnation method
采用离子交换法和浸渍法制备了铯、镁离子改性的Y沸石,研究了其在脂肪族和芳香族醇胺氰乙基化反应中的活性。在一些样品的制备过程中,沸石 Y 发生了转变为铝土型相。该相在脂肪醇的氰乙基化中表现出良好的活性。用浸渍法改性制备的固体比离子交换的固体活性更高。与其他碱性固体相比,催化剂的活性几乎不受空气或水分存在的影响。讨论了催化剂碱度和催化活性之间的相关性。通过 X 射线衍射、体积氮吸附表面积测量和 CO2 程序升温脱附对催化剂进行了表征。扫描电子显微镜显示改性纳米催化剂的颗粒小于 40 nm。丙烯腈与直链醇在催化剂存在下的反应通过微波辐射加速。