核壳结构的Beta-Y复合分子筛的合成与表征  

Synthesis and characterization of core-shell Beta-Y composite zeolites

作　　者：范峰[1] 凌凤香[1] 王少军[1] 杨春雁[1] 秦波[1] 

机构地区：[1]中国石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《燃料化学学报》2012年第7期861-865,共5页Journal of Fuel Chemistry and Technology

基　　金：中国石油化工股份有限公司项目(YK510037)

摘　　要：采用两种不同的水热晶化法合成Beta-Y复合分子筛,并采用XRD、SEM-EDS、FT-IR、N2吸附-脱附技术对其进行表征。结果表明,以Beta分子筛为唯一硅源合成的sample A具有Y和Beta分子筛两种晶型结构,为机械混合形式;而以Beta分子筛母液为前躯体合成的sample B为核壳结构的复合分子筛,具有Y和Beta分子筛两种晶型结构,其核相为Beta分子筛,壳层为Y型分子筛,其晶体中具有介孔结构,并且介孔孔径比较集中。Beta-Y composite zeolites were prepared by two methods and were characterized by XRD, SEM, FT- IR and N2 adsorption. The results indicated that sample A synthesized with Beta zeolite as unique silica source is a composite zeolite of Beta and Y in a mechanical mixed mode, while sample B synthesized with mother liquor of Beta zeolite as precursors is a composite zeolites with core-shell structure. The core-shell Beta-Y composite zeolite （sample B ） owns crystal lattices of Y zeolite as shell and Beta zeolite as core and is provided with centralized mesopore.

关 键 词：Beta-Y复合分子筛 表征 合成 机理 

分 类 号：O643.3[理学—物理化学]