IM-5和TNU-9分子筛在甲苯甲醇烷基化反应中的催化性能  

CATALYTIC PERFORMANCE OF ZEOLITES IM-5 AND TNU-9 IN TOLUENE ALKYLATION WITH METHANOL

作　　者：陈强[1] 王永睿[1] 孙敏[1] 慕旭宏[1] 舒兴田[1] 

机构地区：[1]中国石化石油化工科学研究院石油化工催化材料与反应工程国家重点实验室,北京100083

出　　处：《石油学报（石油加工）》2010年第2期165-170,共6页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展规划"973"项目(2006CB202502)资助

摘　　要：采用水热合成法制备了I M-5和TNU-9分子筛,并采用水蒸气处理法对其进行了改性。采用XRD、BET、TEM、吡啶-IR、29Si、27Al MAS NMR等手段对分子筛的物化性能进行了表征,并考察了分子筛在甲苯甲醇烷基化反应中的催化性能。结果表明,与ZSM-5分子筛相比,I M-5和TNU-9分子筛在甲苯甲醇烷基化反应中具有较高的催化活性,二甲苯选择性高。经水蒸气处理后,ST-H-I M-5和ST-H-TNU-9分子筛的活性有所下降,ST-H-I M-5分子筛的二甲苯选择性高,ST-H-TNU-9分子筛的对二甲苯选择性达到40%左右。Zeolites IM-5 and TNU-9 were synthesized by hydrothermal method, and modified with steam treatment, characterized by XRD, BET, TEM, pyridine-IR, 29Si, 27 Al MAS NMR. The catalytic performances of IM-5 and TNU-9 in toluene alkylation with methanol were investigated. The results showed that, compared with ZSM-5, IM-5 and TNU-9 exhibited higher catalytic activity and xylene selectivity. After steam treatment, the activities of ST-H-IM-5 and ST-H-TNU-9 were decreased, and the xylene selectivity of ST-H-IM-5 was increased, and the p-xylene selectivity of ST-TNU-9 was improved up to 40%.

关 键 词：IM-5 TNU-9 水热处理 甲苯 烷基化 

分 类 号：O643.3[理学—物理化学]