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Efficient synthesis of glycerol carbonate from glycerol and urea with lanthanum oxide as a solid base catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
50319 46789 2011 5 PDF Available
Title
Efficient synthesis of glycerol carbonate from glycerol and urea with lanthanum oxide as a solid base catalyst
Abstract

Lanthanum oxide catalyst prepared by precipitation method and calcined at 600 °C exhibited better catalytic activity in the catalytic synthesis of glycerol carbonate from glycerol and urea with TOF up to 1506 mmol/g·h. It was proposed that the lanthanum oxide catalyst with more strong basic sites (Td > 400 °C) exhibited higher catalytic activity. Accordingly, the catalyst containing appropriate amount of La2O2CO3 phase exhibited higher catalytic activity. Moreover, the recycling experiments demonstrated that the catalytic activity can be essentially preserved during the recycling tests investigated.

Graphical abstractLanthanum oxide catalyst prepared with precipitation method and calcined at 600 °C exhibited 89.1% of glycerol carbonate yield with 98.6% selectivity with as low as 1 wt.% catalyst amount in glycerolysis of urea, thereby leading to higher TOF of 1506 mmol/g·h as compared to the previous report.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► A series of rare earth oxides was tested in the carbonylation of glycerol with urea. ► Lanthanum oxide exhibited better catalytic activity in glycerol carbonate synthesis. ► The catalytic activity essentially correlated with the strong basicity (Td > 400 °C).

Keywords
Glycerol carbonate; Urea; Glycerol; Lanthanum oxide; Solid base
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Efficient synthesis of glycerol carbonate from glycerol and urea with lanthanum oxide as a solid base catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 15, 15 September 2011, Pages 1458–1462
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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