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Reaction kinetics of oxychlorination of carbon monoxide to phosgene based on copper(II) chloride

Paper ID Volume ID Publish Year Pages File Format Full-Text
42414 45924 2009 7 PDF Available
Title
Reaction kinetics of oxychlorination of carbon monoxide to phosgene based on copper(II) chloride
Abstract

The reaction parameters of oxychlorination of carbon monoxide to phosgene, reaction temperature, reaction time and CO pressure were optimized. The online FT-IR technique is successfully employed for the first time to determine the composition of the product effluent. The formation rate of phosgene increases with the reaction temperature. The maximum formation rate of phosgene is 1.2 × 10−3 mmol mL−1 min−1 at 375 °C. At the same time, the decomposition rate of phosgene increases with the reaction temperature, too. A higher pressure of CO can lead to a faster formation rate and a higher yield of phosgene. The catalyst is more stable at 300 °C than at 345 or 375 °C. At 415 °C the catalyst is nearly completely deactivated. The optimized reaction conditions are 300 °C, 6 min and 5 bar CO, where the cumulative yield of phosgene can reach up to 86.5%. The by-product HCl comes from the hydrolysis of phosgene or the surface reaction of CuCl2 and the residual water or the hydroxyl groups on the silica surface. CO2 is formed from the hydrolysis of phosgene.

Graphical abstractThe characteristics of reaction kinetics of oxychlorination of carbon monoxide to phosgene were systematically investigated. The maximum cumulative yield of phosgene, 86.5%, was obtained when the reaction conditions are 5 bar CO, 300 °C and 6 min.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Reaction kinetics; Oxychlorination; IR; Phosgene; Hydrogen chloride; Carbon monoxide
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Reaction kinetics of oxychlorination of carbon monoxide to phosgene based on copper(II) chloride
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 357, Issue 1, 31 March 2009, Pages 51–57
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