摘要
通过考察实验影响因素以在最佳条件合成一种具有潜在应用价值的高水热稳定性材料。通过降解NaY分子筛形成其前驱体,以CTMABr(十六烷基三甲基溴化铵)为模板剂合成介-微孔分子筛。XRD和FT-IR表征结果表明材料的孔壁含有沸石结构单元,在750℃,100%水蒸汽中处理2h后介孔结构依然存在。研究认为在最佳条件下合成的材料是一种高水热稳定性的孔壁含有沸石结构单元的介孔材料,且与直接制备分子筛前驱体的过程相比,降解微孔分子筛制备前驱体有沸石回收和成本低廉两方面的优点。
The objective of the research was to explore the optimum conditions to synthesize materials with graded pores and high hydrothermal stability which are potential candidates for catalysts. The methods of synthesizing Micro/mesoporons zeolites were that CTMABr（cetyltrimethylammonium bromide）was used as the template and Y precursors were obtained by degradation of NaY zeolites. The results of XRD and FT-IR suggested that the composites have an interconnected hierarchical micro - meso -porous structure, with the mesoporous remains existing after the treatment at 750℃ in 100% vapor for 2 h. The conclusion is that the materials synthesized in the optimum conditions with graded pores and high hydrothennal stability, are different from those obtained from the process of direct synthesis of precursors, and also degradation of waste zeolites has the advantages of reclaiming waste zeolites and cutting the cost.
出处
《山东大学学报（理学版）》
CAS
CSCD
北大核心
2009年第7期22-25,28,共5页
Journal of Shandong University(Natural Science)
基金
国家自然科学基金资助项目(20606003)
中国石油科技创新基金资助项目(2008D-5006-04-05)
北京化工大学青年教师基金资助项目(QN0726)
关键词
介-微孔分子筛
降解
模板剂
自组装
前驱体
miero/mesoporons zeolite
degradation
templates
self-assembly
precursor
