[1]卫冬燕,王春芳,陈宜俍,等.离子交换法合成L/MCM-41复合分子筛[J].郑州大学学报(工学版),2012,33(01):51-54.[doi:10.3969/j.issn.1671-6833.2012.01.013]
　WEI Dongyan,WANG Chunfang,CHEN Yiliang,et al.Synthesis of Micro/meso-porous Composite Molecular Sieve L/MCM-41with lon Exchange[J].Journal of Zhengzhou University (Engineering Science),2012,33(01):51-54.[doi:10.3969/j.issn.1671-6833.2012.01.013]
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离子交换法合成L/MCM-41复合分子筛()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
33
期数:
2012年01期
页码:
51-54
栏目:
出版日期:
2012-01-10

文章信息/Info

Title:
Synthesis of Micro/meso-porous Composite Molecular Sieve L/MCM-41with lon Exchange
作者:
卫冬燕; 王春芳; 陈宜俍; 等.
郑州大学化工与能源学院,河南郑州,450001, 中国石油天然气股份有限公司石油化工研究院催化材料研究室,北京,100195
Author(s):
WEI Dongyan; WANG Chunfang; CHEN Yiliang; etc;
1.School of Chemical Engineering of 2hengzhou University, 2hengzhou 4$0001, Chine; 2, Petrochemical Research institute Petrochina,Beijing 100195,China
关键词:
离子交换;  介微孔复合分子筛;  L/MCM-41
Keywords:
ion exchange; Meso/micro-porous composite molecular sieve ;  L/MCM-41
分类号:
TQ17TQ424. 25
DOI:
10.3969/j.issn.1671-6833.2012.01.013
摘要:
以十六烷基三甲基溴化铵(CTAB)为模板剂,分别采用包埋法和离子交换法,两步晶化都合成了L/MCM-41复合分子筛,并通过XRD、SEM、TEM和BET等测试手段对合成样品进行表征,检测结果表明用离子交换法合成的复合分子筛孔径为3.04 nm.与水热晶化法合成的MCM-41相比:(1)壁厚由0.55 nm增大到1.81 nm；(2)水热稳定性也明显提高,在100℃沸腾状态下结构保持时间由原来的低于2h增大到8h,与L沸石相比,K+含量降低为0.26％.
Abstract:
Micro/meso-porous composite molecular sieve l/MCM4l was synthesized with embedding methodand ion exchange using cetyl trimethyl ammonium bromide ( CTAB) as template and it was confirmed by heingcharacterized by X-ray diflraction( XRD), seanning electron microscopy( SEM), transmission electronic mi.croscopy(TEM) and N, absorption/ desorption. The results indicated that the pore diameter of L/MCM-41composite molecular sieve was 3. 04 nm which was bigger than that of microporous molecular sieves. Comparedwith MCM -41 molecular sieve synthesized by ordinary hydrothermal method: 1 )the pore wall thickness in-creased from 0. $5 nm to 1.81 nm ; 2 ) The hydrothermal stability improved signifcantly, the structure couldkeep unchanged for &h, rising by 6 h, at 100 ℃, Compared with zeolite L,the content of K* decreased from18.42% 0.98%.
更新日期/Last Update: 1900-01-01