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Dimethyl carbonate via transesterification of propylene carbonate with methanol over ion exchange resins

Paper ID Volume ID Publish Year Pages File Format Full-Text
46102 46429 2012 6 PDF Available
Title
Dimethyl carbonate via transesterification of propylene carbonate with methanol over ion exchange resins
Abstract

The transesterification of propylene carbonate with methanol to form dimethyl carbonate has been carried out in the presence of strong basic ion exchange resins as heterogeneous catalysts at low temperatures. Experiments have been carried out in a 75 mL autoclave as well as in a continuous flow fixed bed reactor. Temperatures were varied between −20 and 40 °C without any additional pressure. The molar ratio of methanol and propylene carbonate was adjusted between 8:1 and 4:1. The ion exchange resins showed a high activity even below 0 °C when OH− is used as counter ion. Leaching tests resulted in a complete hold of the conversion after removing the catalyst. In the continuous reactor the catalysts suffered from a rather fast deactivation within one week due to the transformation of the counter ion hydroxide to carbonate. However, a regeneration of the catalyst using different basic liquids was possible resulting in a complete recovery of its catalytic activity.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► We study the catalytic effect of strongly basic ion exchange resins. ► The transesterification is conducted batch-wise and in a continuous flow reactor. ► The catalyst is very active in the beginning but deactivates within one week. ► Washing of the catalyst with diluted bases result in complete regeneration.

Keywords
Transesterification; Ion exchange resin; Dimethyl carbonate; Propylene carbonate; DMC
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Dimethyl carbonate via transesterification of propylene carbonate with methanol over ion exchange resins
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 125, 21 August 2012, Pages 486–491
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
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us