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Phosgene-free approaches to catalytic synthesis of diphenyl carbonate and its intermediates

Paper ID Volume ID Publish Year Pages File Format Full-Text
43733 45986 2007 21 PDF Available
Title
Phosgene-free approaches to catalytic synthesis of diphenyl carbonate and its intermediates
Abstract

Diphenyl carbonate (DPC) is considered as a substitution for phosgene to synthesize polycarbonate resins. Conventional production of DPC involves reactions of phosgene and phenol. However, the phosgene process has drawbacks such as environmental and safety problems associated with using highly toxic phosgene as the reagent, which results in the formation of chlorine salts, and copious amounts of methylene chloride as the solvent. For these reasons, environmentally friendly processes for DPC production without using phosgene have been proposed and developed in the past decades. So far, the most promising alternatives appear to be the transesterification of dimethyl carbonate (DMC) and phenol, the direct oxidative carbonylation of phenol, and transesterification of dialkyl oxalates and phenol. This paper attempts to review recent literature concerning process design and catalytic chemistry for these phosgene-free approaches. The advantages and disadvantages are discussed for each reaction. Strategies to overcome potential problems are provided. The perspectives to improve catalytic efficiency of phosgene-free process are proposed.

Graphical abstractThis review attempts to describe and summarize recent literatures of process design and catalytic chemistry of phosgene-free approaches to catalytic synthesis of diphenyl carbonate and its intermediates. The advantages and disadvantages of these processes are discussed. Strategies to overcome potential problems are provided. The perspectives to improve catalytic efficiency of phosgene-free processes are proposed. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Review; Catalysis; Polycarbonates; Phosgene-free; Environmental; Diphenyl carbonate; Dimethyl carbonate; Methyl phenyl carbonate; Carbonylation; Transesterification; Dimethyl oxalate; Diethyl oxalate; Diphenyl oxalate; Methyl phenyl oxalate; Decarbonylati
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Phosgene-free approaches to catalytic synthesis of diphenyl carbonate and its intermediates
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 316, Issue 1, 2 January 2007, Pages 1–21
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