导向剂法制备SAPO-11分子筛及其加氢异构化性能

Hydroisomerization Properties of SAPO-11 Molecular Sieve Prepared by Targeting Agent Method

采用导向剂法在模板剂用量减半的条件下成功合成小晶粒介孔SAPO-11分子筛。对合成分子筛的晶体结构、形貌、孔结构和酸类型进行表征。以长链烷烃正十二烷作为反应原料,考察Pt负载量为0. 5(wt)%的SAPO-11分子筛的加氢异构化反应性能。结果表明,将模板剂使用量减半合成的SAPO-11分子筛晶粒尺寸约为3μm,介孔比表面积为113. 3m^2/g,介孔孔容为0. 328m^3/g,异构烃收率达到65. 31%。

The small-grain mesoporous SAPO-11 molecular sieve was successfully prepared by the directing agent method under the condition that the amount of the template was halved. The crystal structure,elemental composition,surface area,pore volume,and acidity of the catalyst were thoroughly characterized. The catalytic hydroisomerization performance of SAPO-11 catalysts with 0. 5( wt) % Pt loading was evaluated with n-dodecane as a material. The results showed that the size of SAPO-11 molecular sieve with reduced templating agent content is about 3μm,the mesoporous specific surface area is 113. 3 m^2/g,the mesoporous pore volume is 0. 328 m^3/g,and the isomer yield is 65. 31%.