分子筛性质对Mo/HZSM-5催化剂上甲烷无氧脱氢芳构化反应的影响  

Effect of HZSM-5 Zeolite Properties on Dehydro-aromatization of Methane over Mo/HZSM-5 Catalyst

作　　者：苏玲玲[1] 张贺[2] 王祥生[2] 庄建勤[1] 徐奕德[1] 包信和[1] 

机构地区：[1]中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023 [2]大连理工大学化工学院,辽宁大连116012

出　　处：《催化学报》2003年第4期284-288,共5页

摘　　要：通过改变合成条件与合成体系 ,考察了不同硅源合成的HZSM 5分子筛对Mo/HZSM 5催化剂上甲烷无氧脱氢芳构化反应性能的影响 .结果表明 ,用水玻璃合成的HZSM 5分子筛负载Mo后 ,其催化性能优于用硅溶胶合成的分子筛 .1HMASNMR测定结果表明 ,前者的Br¨onsted酸浓度较后者大 .通过改变合成条件 ,减小HZSM 5分子筛的粒度 。The effects of particle size of HZSM 5 zeolite and silicon sources for preparation of HZSM 5 on the reaction performance of methane dehydro aromatization over Mo/HZSM 5 catalyst were studied by changing the synthesis conditions and systems. The results showed that the catalytic performance of Mo/HZSM 5 catalyst in which the HZSM 5 was synthesized via soluble water glass was better than that of Mo/HZSM 5 catalyst in which the HZSM 5 was synthesized via silica sol. 1 H MAS NMR measurements revealed that the amount of Brnsted acid sites in the former is more than that in the latter. In addition, by using the HZSM 5 zeolite with smaller particle size, the corresponding Mo/HZSM 5 catalyst shows better catalytic stability.

关 键 词：分子筛 性质 MO/HZSM-5 负载型钼催化剂 甲烷 无氧脱氢芳构化反应 

分 类 号：O643.3[理学—物理化学]