燃料化学学报Issue(10)：1240-1245,6.
核壳结构 Beta/MCM-22双微孔复合分子筛的合成与表征
Synthesis and characterization of core-shell Beta/MCM-22 micro-microporous composite zeolites
摘要
Abstract
With Beta zeolite as the core crystals, core-shell Beta / MCM-22 composite zeolites with uniformmorphology were synthesized by a two-step hydrothermal method. The composite zeolites were characterized by XRD, SEM, TEM, N2-adsorption and FT-IR. The results showed the composite zeolites exhibit uniformstructured morphology; Beta and MCM-22 zeolites act as core and shell, respectively. The pore structure of Beta / MCM-22 composite zeolites was between those of MCM-22 and Beta zeolites. The amounts of mediumacidic sites and brönsted acidic sites are increased markedly (CB / CL = 13. 80) in the composite zeolites. The surface energy, Si-OH groups and surficial positive charges of Beta zeolites are enriched through Ar-H2 plasmasurface treatment , which contributes to the formation of uniform core-shell Beta / MCM-22 composite zeolites.关键词
Beta/MCM-22/核壳结构/复合分子筛/等离子体Key words
Beta/MCM-22/core-shell structure/composite zeolites/plasma分类
化学化工引用本文复制引用
张佩珊,马波,杨卫亚,凌凤香,沈智奇,王少军,候宇鑫..核壳结构 Beta/MCM-22双微孔复合分子筛的合成与表征[J].燃料化学学报,2014,(10):1240-1245,6.基金项目
中国石油化工股份有限公司资助项目(113038)。 （113038）
