摘要
以六亚甲基亚胺为模板剂,在静态水热合成条件下,考察了超声老化对MCM-49分子筛合成的影响.结果表明,凝胶经超声老化处理后,即使使用比表面积小的硅源(硅胶或白碳黑)也能合成出不含杂晶且结晶良好的MCM-49分子筛.超声老化处理缩短了MCM-49分子筛的晶化时间,扩大了分子筛的晶化范围,同时降低了模板剂的用量.合成的MCM-49分子筛结晶度高,颗粒度小.
The effect of aging with ultrasonic treatment on the synthesis of zeolite MCM-49 was investigated under the conditions of static hydrothermal crystallization using hexamethyleneimine （HMI） as the template. As a result of using ultrasound, highly crystalline MCM-49 is obtained from a silica source with a low specific surface area. Aging with ultrasound can noticeably broaden the crystallization range of MCM-49 and shorten the crystallization time as well as decrease the HMI/SiO2 ratio.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第5期375-377,共3页
基金
国家自然科学基金资助项目(20233030)
