文献类型：期刊文章

作　　者：关新新[1] 刘克成[1] 武光军[1] 章福祥[1] 关乃佳[1]

机构地区：[1]南开大学化学学院新催化材料研究所,天津300071

出　　处：《分子催化》

基　　金：国家973计划项目资助(2003CB615801).

年　　份：2006

卷　　号：20

期　　号：3

起止页码：270-272

语　　种：中文

收录情况：AJ、BDHX、BDHX2004、CAS、CSCD、CSCD2011_2012、EI、IC、JST、RCCSE、SCOPUS、ZGKJHX、核心刊

摘　　要：Nitrogen containing SAPO-34 molecular sieves were prepared by a secondary technique with a starting material of SAPO-34 treatment at elevated temperature by ammonia in this study. Comparing with precursor, the obtained samples still kept high crystallinity and high specific surface area after treated at high temperature for different times detected by XRD and BET measurements. The catalytic performance of nitridized samples for MTO(methanol make olefins) was investigated. It was found that olefins selectivity was increased on the SAPO-34 molecular sieve treated by ammonia, ethylene selectivity increased from 11.6% to 39.7%. Nitridation changed the acidity of SAPO-34 molecular sieve, which responsible for light olefins.

关 键 词：氮化 SAPO-34 甲醇制烯烃 烯烃选择性  

分 类 号：O643.32]