丙烯在ZSM-5沸石上齐聚反应的研究 Ⅰ.模板剂用量对丙烯齐聚反应的影响  

PROPENE OLIGOMERIZATION OVER ZSM-5 ZEOLITES Ⅰ. EFFECT OF TEMPLATE CONCENTRATION ON PROPENE OLIGOMERIZATION REACTION

作　　者：王锋[1] 房克功[1] 李晓波[1] 胡津仙[1] 任杰[1] 李永旺[1] 孙予罕[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西太原030001

出　　处：《燃料化学学报》2003年第3期240-244,共5页Journal of Fuel Chemistry and Technology

基　　金：山西省自然科学基金(20031029)

摘　　要：考察了不同正丁胺(NBA)模板剂用量合成ZSM 5沸石的物化特性和催化性能。采用XRD、SEM、NH3 TPD和BET等手段对合成样品的物化特性进行了表征。结果表明,模板剂与SiO2摩尔比在0 67～0 22时合成的ZSM 5沸石结晶度高于90%;随着模板剂用量的减少,ZSM 5沸石的平均粒径减小,强酸量也存在相同的趋势。丙烯齐聚反应评价结果显示,模板剂用量对合成ZSM 5沸石的催化活性有显著影响,模板剂与SiO2摩尔比在0 67～0 45之间合成的沸石催化性能较好。ZSM5 zeolites synthesized with varying the concentration of nbutylamine in gel were studied The samples were characterized by XRD, SEM and BET surface area measurements Under synthetic condition of this study, the range of optimum concentration of nNBA(NBA/SiO2) is from 067 to 022, the relative crystallinity of ZSM5 zeolites synthesized is over 90% As template concentration decreased, particle size and BET surface area of ZSM5 zeolites decreased The acidity was measured by temperatureprogrammed desorption (TPD) of ammonia It was found that the number of strong acid sites decreased almost linearly with the concentration of template Propene oligomerization reaction was carried out over the samples to evaluate the catalytic properties of ZSM5 zeolites The template concentration affected significantly on catalytic activities of the ZSM5 zeolites ZSM5 zeolites synthesized with varying the concentration of nbutylamine form 067 to 022 in gel showed better catalytic activities and stability

关 键 词：ZSM-5沸石 模板剂 齐聚 

分 类 号：TK16[动力工程及工程热物理—热能工程]