NDLI: Synthesis of EMT-rich faujasite in the presence of organic template of low-cost polyquaternium-6

Content Provider	Springer Nature Link
Author	Liu, Shuzhen Li, Liansheng Li, Caijin Xiong, Xiaoyun Xiao, Feng Shou
Copyright Year	2007
Abstract	EMT-rich faujasite zeolite has been successfully synthesized from an organic template of low-cost polyquaternium-6 in the absence of crown ether (18-crown-6). Additionally, low-cost water glass is used as a silica source taking the place of silica sol generally used in the conventional synthesis of EMT zeolite. X-ray diffraction (XRD) patterns show that the samples exhibit obvious peaks associated with EMT structure in addition to the peaks assigned to Y zeolite, indicating the presence of EMT and Y phase, and the purity of EMT zeolite reaches 70–80%. Scanning electron micrographs (SEM) show that partial crystals of the sample are typically hexagonal symmetry, confirming the presence of zeolite EMT crystals. Thermogravimetric and differential thermal analysis (TG-DTA) show that there are obvious peaks associated with combustion of organic template, suggesting that polyquaternium-6 plays an important role for the formation of zeolite EMT phase. Furthermore, temperature programmed desorption of ammonia (NH$_{3}$-TPD) shows that the acidic amount of EMT-rich faujasite is slightly more than that of Y zeolite, and catalytic cracking of cumene shows that EMT-rich faujasite has higher activity than zeolite Y.
Starting Page	295
Ending Page	301
Page Count	7
File Format	PDF
ISSN	13802224
Journal	Journal of Porous Materials
Volume Number	15
Issue Number	3
e-ISSN	15734854
Language	English
Publisher	Springer US
Publisher Date	2007-02-08
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	EMT zeolite Faujasite Low-cost organic template Polyquaternium-6 Water glass Physical Chemistry Characterization and Evaluation of Materials Catalysis
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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