催化学报

催化学报 ›› 2006, Vol. 27 ›› Issue (5): 375-377.

• 研究快讯 • 上一篇    下一篇

超声老化对MCM-49分子筛合成的影响

吴建梅,王保玉,李牛,项寿鹤   

  1. 南开大学化学学院新催化材料科学研究所, 天津300071
  • 收稿日期:2006-05-25 出版日期:2006-05-25 发布日期:2006-05-25

Effect of Aging with Ultrasound on the Synthesis of MCM-49 Zeolite

WU Jianmei, WANG Baoyu, LI Niu, XIANG Shouhe*   

  1. Institute of New Catalytic Material Science, College of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2006-05-25 Online:2006-05-25 Published:2006-05-25

PDF

838

被引次数

12

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.

关键词: MCM-49分子筛, 合成, 老化, 超声波

Abstract: 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.

Key words: MCM-49 zeolite, synthesis, aging, ultrasound