复合分子筛Y/SAPO-5的合成与表征

Preparation and Characterization of Binary Structure Zeolite Y/SAPO-5

关键词: Y 分子筛 , SAPO-5 分子筛 , 水热合成法 , 复合分子筛

Binary structure zeolites Y/SAPO-5 were synthesized by hydrothermal synthesis method, with phosphoric acid, pseudoboehmite, and silica sol being used as phosphorus, aluminum, and silicon sources, respectively, and triethylamine as template. The samples obtained were characterized by means of XRD, FT-IR and SEM. The results indicate that the synthesized zeolite samples is the binary structural microspheres with NaY zeolites as core and SAPO-5 as shell about 10 μm. The catalytic performance was investigated by the synthesis of dimethyl ether from methanol. The experiments of the catalysis of dimethyl ether show that Y/SAPO-5 exhibited excellent selectivity of DME, with the increase of conversion of methanol over the temperature range 463～523 K.

国家自然基金资助项目(20976077 , 201076100);国家973 计划资助项目(2007CB216403)

10.3696/j.issn.1006-396X.2011.03.002