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Zn–Mg mixed oxide as high-efficiency catalyst for the synthesis of propylene carbonate by urea alcoholysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
49709 46763 2015 4 PDF Available
Title
Zn–Mg mixed oxide as high-efficiency catalyst for the synthesis of propylene carbonate by urea alcoholysis
Abstract

•Zn–Mg mixed oxide catalysts were prepared via urea–precipitation.•ZM0.25 exhibited high catalytic activity within 30 min (PC yield 94.8%).•PC yield was strongly related to alkaline of unit specific surface area.•ZM0.25 catalyst can be reused for up to 5 times (PC yield > 97%).

Zn/Mg catalysts with different atomic ratios of zinc to magnesium were prepared via urea–precipitation. The products were characterized by XRD, BET, SEM, CO2-TPD, and ICP. Compared with pure ZnO, the mixed oxide possessed appropriate alkaline density and high specific surface area. The catalyst with Zn/Mg of 1:4 exhibited high catalytic activity within 30 min and reliable production for propylene carbonate (PC) (94.8%). It was found that the PC yield was strongly related to the amount of alkali of unit specific surface area. Furthermore, the regeneration of ZnO–MgO catalyst was investigated and the ZM0.25 catalyst can be reused for up to 5 times with less changed PC yield.

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Keywords
Zn/Mg catalysts; Alkaline density; Propylene carbonate; Regeneration
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Zn–Mg mixed oxide as high-efficiency catalyst for the synthesis of propylene carbonate by urea alcoholysis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 66, 5 June 2015, Pages 38–41
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
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