Ni-HZSM-5分子筛用于不同烯烃原料齐聚反应性能的研究  

Study on performance of Ni-HZSM-5 molecular sieve in catalyzing oligomerization of different olefins feedstocks

作　　者：訾仲岳[1,2] 李建青 刘广波[1] 吴晋沪[1] ZI Zhong-yue;LI Jian-qing;LIU Guang-bo;WU Jin-hu(Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao 266101,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院青岛生物能源与过程研究所,山东青岛266101 [2]中国科学院大学,北京100049

出　　处：《现代化工》2020年第9期66-69,共4页Modern Chemical Industry

基　　金：国家重点研发计划(2018YFB1501403);中国科学院战略先导科技专项A类(XDA21060800);山东省自然科学基金(ZR2016EEQ15);四川省科技计划(2017JZ0021);国家自然科学基金(U1610254)。

摘　　要：通过浸渍法制备了Ni-HZSM-5催化剂。利用XRD、SEM、N2物理吸附、NH3-TPD和Py-IR对催化剂进行表征,分别用丙烯、丁烯、2种比例丙烯丁烯的混烯、C3~C7多种混合烯烃等原料考察了催化剂烯烃齐聚反应的性能。结果表明,NiSO4处理可以增加催化剂的酸度和介孔体积,其中Lewis和Bronsted酸性位点的数量和强度明显增加。Ni-HZSM-5分子筛催化剂在多种烯烃原料下均表现出优异的催化性能。不同烯烃原料下的齐聚反应转化率均在75%以上,选择性均在80%以上,产物碳数分布主要集中在C6~C16之间。Ni-HZSM-5 catalyst is prepared through impregnation method.XRD,SEM,N 2 physical adsorption,NH 3-TPD and Py-IR are used to characterize the prepared catalyst.The performance of the catalyst is evaluated in oligomerizations of propylene,butylene,mixtures of propylene and butylene,and C 3-C 7 mixed olefins,respectively.The results show that the acidity and mesopore volume of the catalyst can be increased by adding NiSO 4,in which the number and strength of Lewis and Brnsted acid sites in the catalyst go up significantly.Ni-HZSM-5 molecular sieve catalyst exhibits excellent catalytic performance against various olefin raw materials.The conversion rates of the oligomerization reaction under different olefin feedstocks all exceed 75%,the selectivity is above 80% and the carbon number of the products distributes mainly between C6-C16.

关 键 词：Ni-HZSM-5 分子筛 混合烯烃 烯烃齐聚 

分 类 号：O632.12[理学—高分子化学]