Toward a generic model for phosgene synthesis catalysis over activated carbon

Hughes, Rory, Davies, Philip R. ORCID: https://orcid.org/0000-0003-4394-766X, Brennan, Colin and Lennon, David 2024. Toward a generic model for phosgene synthesis catalysis over activated carbon. ChemCatChem , e202401118. 10.1002/cctc.202401118

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Abstract

A reaction model was recently been postulated to describe the phosgene synthesis process over an activated carbon catalyst. That body of work exclusively considered a single grade of activated carbon (Donau Supersorbon K40), raising the issue that the mechanistic insight gleaned could be restricted to the single substrate. Therefore, to evaluate the generality of the proposed sequence of elementary reactions that lead to phosgene production, this article concentrates on Norit RX3 Extra, a representative activated carbon that finds wide application in industrial applications. Several phosgene synthesis traits were associated with Donau Supersorbon K40 and are reproduced with Norit RX3 extra over the reaction conditions studied, such as exclusive phosgene selectivity and a degree of reagent retention. However, temperature-programmed reaction studies show the reaction profile of the Norit RX3 extra to exhibit deviations from that observed for Donau Supersorbon K40. A modified reaction model is proposed to account for these differences. The revised reaction model is thought to represent a generic model for phosgene synthesis that can accommodate disparities in the surface chemistry of different activated carbon formulations.

Item Type:	Article
Date Type:	Published Online
Status:	In Press
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	Wiley
ISSN:	1867-3880
Funders:	EPSRC
Date of First Compliant Deposit:	3 January 2025
Date of Acceptance:	2 December 2024
Last Modified:	07 Jan 2025 14:00
URI:	https://orca.cardiff.ac.uk/id/eprint/174962

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