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题名: Interzeolite conversion of zeolite MCM-49 into zeolite ZSM-35 in cyclohexylamine-hexamethyleneimine-Na2O-H2O containing systems
作者: Xie, Sujuan1;  Liu, Shenglin1;  Gao, Ningning1, 2;  Li, Xiujie1;  Gao, Yang1;  Liu, Kefeng3;  Xu, Longya1
刊名: NEW JOURNAL OF CHEMISTRY
发表日期: 2014-06-01
DOI: 10.1039/c3nj01532g
卷: 38, 期:6, 页:2514-2521
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The interzeolite conversion of zeolite MCM-49 into zeolite ZSM-35 in "cyclohexylamine (CHA)-hexamethyleneimine (HMI)-Na2O-H2O" systems, consisting of "CHA-Na2O-H2O", "HMI-Na2O-H2O" and "Na2O-H2O", was investigated in detail using X-ray diffraction (XRD), scanning electron microscopy (SEM), and nuclear magnetic resonance (NMR) characterization techniques. Both CHA and HMI play important roles in directing the interzeolite conversion of MCM-49 into ZSM-35, and the conversion speed is much faster in systems containing CHA than those containing HMI. Even in the Na2O-H2O system without any organic amine, MCM-49 can still transform into some other zeolites with more stable topological structures than itself, such as ZSM-35, ZSM-5, and mordenite, but the product of the interzeolite conversion is more complicated than that in the systems containing organic amines (CHA and/or HMI). In the Na2O-H2O system, alkalinity has been proved to be a crucial factor influencing the conversion trend of MCM-49. Zeolites ZSM-5 and mordenite will appear in the products besides ZSM-35 with the increase of the alkalinity. The conversion process of zeolite MCM-49 in the systems investigated accords well with the solution-mediated transformation mechanism.
关键词[WOS]: MCM-49/ZSM-35 COMPOSITE ZEOLITES ;  CUBIC-P-ZEOLITE ;  HYDROTHERMAL SYNTHESIS ;  TRANSFORMATION ;  PRECURSORS ;  CRYSTALLIZATION ;  FAU ;  HEXAMETHYLENEIMINE ;  HYDROXYSODALITE ;  DISSOLUTION
语种: 英语
WOS记录号: WOS:000336821000047
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145659
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Petrochina Co Ltd, Petrochem Res Inst, Beijing 100029, Peoples R China

Recommended Citation:
Xie, Sujuan,Liu, Shenglin,Gao, Ningning,et al. Interzeolite conversion of zeolite MCM-49 into zeolite ZSM-35 in cyclohexylamine-hexamethyleneimine-Na2O-H2O containing systems[J]. NEW JOURNAL OF CHEMISTRY,2014,38(6):2514-2521.
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