NDLI: Fluoride-free and low concentration template synthesis of hierarchical Sn-Beta zeolites: efficient catalysts for conversion of glucose to alkyl lactate

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Fluoride-free and low concentration template synthesis of hierarchical Sn-Beta zeolites: efficient catalysts for conversion of glucose to alkyl lactate

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Fluoride-free and low concentration template synthesis of hierarchical Sn-Beta zeolites: efficient catalysts for conversion of glucose to alkyl lactate

Content Provider	Royal Society of Chemistry (RSC)
Author	Xin, Weiwen Zhou, Lipeng Chen, Chen Xu, Jie Huang, Jianhao Lu, Tianliang Bian, Jingjing Su, Yunlai Yang, Xiaomei Wang, Feng
Copyright Year	2017
Abstract	Hierarchical Sn-Beta zeolite was prepared through a hydrothermal postsynthesis method, which employed no fluoride and only a small amount of tetraethyl ammonium hydroxide (TEAOH). The dual roles of TEAOH as a base and as a structure directing agent were discussed in detail, which were significantly affected by its concentration. At a TEAOH concentration of 0.2–0.4 mol L−1, hierarchical Sn-Beta zeolites with the most probable mesopore diameter of 7.8 nm were achieved. Other physicochemical properties of the hierarchical Sn-Beta including the content and state of Sn and the acidity were also characterized. The hierarchical Sn-Beta zeolite gave a higher yield of methyl lactate (58%) than the microporous Sn-Beta zeolite synthesized in fluoride medium (47%) due to the promoting effect of the hierarchical porosity on the conversion of glucose in methanol, which is an important and challenging process of a biorefinery. The hierarchical Sn-Beta zeolite is stable and can be recycled and reused five times without significant loss of activity and selectivity.
Starting Page	692
Ending Page	701
Page Count	10
File Format	HTM / HTML PDF
ISSN	14639262
Volume Number	19
Issue Number	3
Journal	Green Chemistry
DOI	10.1039/c6gc02437h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Zeolite Hydrothermal circulation Sodium fluoride Ammonium hydroxide Mesoporous material Methyl lactate Porosity Glucose Methanol Biorefinery
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution

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Fluoride-free and low concentration template synthesis of hierarchical Sn-Beta zeolites: efficient catalysts for conversion of glucose to alkyl lactate

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