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材料工程  2020, Vol. 48 Issue (4): 158-164    DOI: 10.11868/j.issn.1001-4381.2019.000905
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
活化凹凸棒石对多级孔分子筛合成种类和孔道结构的影响
李红玑1,2, 王发良1, 李享1, 杨靖1, 宋经华1, 李波1
1. 西安工程大学 城市规划与市政工程学院, 西安 710048;
2. 西安理工大学 水利水电学院, 西安 710048
Influence of activated attapulgite on synthesis and pore structure of hierarchical zeolite
LI Hong-ji1,2, WANG Fa-liang1, LI Xiang1, YANG Jing1, SONG Jing-hua1, LI Bo1
1. College of Town Planning & Municipal Engineering, Xi'an Polytechnic University, Xi'an 710048, China;
2. Faculty of Water Resources and Hydraulic Power, Xi'an University of Technology, Xi'an 710048, China
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摘要 采用不同方法活化的凹凸棒石为前驱体,在模板剂四乙基氢氧化铵(TEAOH)作用下一步法合成多级孔分子筛。研究不同硅铝比条件下活化凹凸棒石对分子筛合成种类和孔道层次结构的影响。结果表明:不同活化凹凸棒石作为前驱体合成的分子筛种类存在差异;XRD结果显示:当以碱焙烧酸微波凹凸棒石(HM-NC-ATP)、酸微波凹凸棒石(HM-ATP)和酸水热凹凸棒石(HH-ATP)为前驱体时,相同条件下分别获得ZSM-5,ZSM-12和ZSM-11分子筛,且硅铝比不同导致合成产物的形貌和孔道结构不一。此外,以HM-NC-ATP,HH-ATP为前驱体,合成产物孔道层次结构因子(HF)与硅铝比变化呈线性相关;HM-ATP为前驱体时,合成产物的孔道层次因子HF值最小,约为0.105,说明此时有利于介孔孔道构筑。
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李红玑
王发良
李享
杨靖
宋经华
李波
关键词 活化凹凸棒石四乙基氢氧化铵多级孔分子筛孔道层次结构因子    
Abstract:Hierarchical zeolite was successfully synthesized with activated attapulgite by the template of TEAOH in one pot. The influence of the activated attapulgite on hierarchical pore structure and crystal morphology of products under the different Si/Al ratios was systematically investigated. The results show that there are obvious diversity of the crystal morphology while the different activated palygorskites as precursors; XRD reveal that ZSM-5, ZSM-12 and ZSM-11 molecular sieves are obtained under the same condition when the alkali-roasted and acid-microwaved attapulgite (HM-NC-ATP), acid-microwaved attapulgite (HM-ATP) and acid-hydrothermal attapulgite (HH-ATP) are the precursors, respectively, and the morphology and pore structure of the products are inconsistent at different Si/Al ratios. Moreover, the hierarchy factor (HF) has a good linear dependence on the Si/Al ratio when HM-NC-ATP and HH-ATP are as the precursor; Hierarchical factor of zeolites is 0.105, which are prepared with HM-ATP, exhibiting the mainly mesoporous structure, it shows that the precursor of HM-ATP is beneficial to the formation of mesoporous structure.
Key wordsactivated attapulgite    tetraethylammonium hydroxide    hierarchical zeolite    hierarchical factor
收稿日期: 2019-10-04      出版日期: 2020-04-23
中图分类号:  TQ426.6  
通讯作者: 李红玑(1986-),女,讲师,博士,研究方向为新型纳米水处理材料的合成及水体修复技术,联系地址:陕西省西安市金花南路19号西安工程大学城市规划与市政工程学院(710048),E-mail:lhj861106@126.com     E-mail: lhj861106@126.com
引用本文:   
李红玑, 王发良, 李享, 杨靖, 宋经华, 李波. 活化凹凸棒石对多级孔分子筛合成种类和孔道结构的影响[J]. 材料工程, 2020, 48(4): 158-164.
LI Hong-ji, WANG Fa-liang, LI Xiang, YANG Jing, SONG Jing-hua, LI Bo. Influence of activated attapulgite on synthesis and pore structure of hierarchical zeolite. Journal of Materials Engineering, 2020, 48(4): 158-164.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000905      或      http://jme.biam.ac.cn/CN/Y2020/V48/I4/158
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