新型微孔-介孔复合分子筛加氢裂化催化剂  

Novel miroporous mesoporous composite hydrocracking catalysts

作　　者：张学军[1] 王刚[2] 孙发民[2] 袁宗胜[2] 王宗贤[1] 

机构地区：[1]中国石油大学(华东)化学化工学院,山东东营257061 [2]大庆化工研究中心,黑龙江大庆163714

出　　处：《大庆石油学院学报》2008年第2期75-78,82,共5页Journal of Daqing Petroleum Institute

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目(040803-03-00)

摘　　要：以后合成方法制备的Y/Al-SBA-15复合分子筛为主要裂化组分、W-Ni金属组合为加氢组分,利用浸渍法制备系列化的新型微孔-介孔复合分子筛加氢裂化催化剂,分析重油加氢裂化性能.结果表明,新型加氢裂化催化剂结合SBA-15的介孔结构和Y分子筛的酸性特征,其中Y/Al-SBA-15复合分子筛载体中Y分子筛和SBA-15的质量分数比是影响催化剂性质和加氢裂化性能的主要因素.受到Y和SBA-15分子筛之间的协同作用,大孔容与低酸强度匹配对大分子环烷烃和芳烃裂化开环裂化具有较强的催化性能,表现出高的中油选择性和优异的产品性质.A series of novel micro-mesoporous hydrocracking catalysts were prepared by using W-Ni supported on the different Y/Al-SBA-15 composites by impregnation method,and characterized by XRD,N2 sorption isotherms,FT-IR and SEM techniques.Their catalytic performances were evaluated by heavy oil hydrocracking reaction.The results showed that the catalysts possess both SBA-15 and Y structure and acidic property,which lead to a synergistic effect for heavy oil hydrocracking reaction.The properties and catalytic performance of the novel hydrocracking catalysts were heavily dependent on the ratio of Y zeolite and SBA-15 in the Y/Al-SBA-15 composite supports.The catalyst with larger pore volume and weak acid strength gave enhanced ring-opening activity with higher selectivity of middle distillates and better quality of the products.

关 键 词：加氢裂化 催化剂 Y/Al—SBA-15复合分子筛 表征 

分 类 号：TQ426.94[化学工程]