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Liquid-Phase Hydrogenation of Maleic Acid over Pd/Al₂O₃ Catalysts Prepared via Deposition–Precipitation Method Byun, Mi Yeon; Kim, Ji Sun; Baek, Jae Ho; Park, Dae-Won; Lee, Man Sig

Abstract

Succinic acid (SA) is a valuable raw material obtained by hydrogenation of maleic acid (MA). The product selectivity of this reaction is highly dependent on the reaction conditions. This study therefore investigated the effect of the reaction temperature, hydrogen pressure, and reaction time on the liquid-phase hydrogenation of MA by a Pd/Al₂O₃ catalyst. Complete conversion of MA and 100% selectivity for SA were achieved at a temperature of 90 °C, H₂ pressure of 5 bar, and reaction time of 90 min. Fumaric acid (FA) was formed as an intermediate material by hydrogenation of MA under nonoptimal conditions. The impact of the percentage of Pd dispersion and phase of the Al₂O₃ support (γ, θ + α, and α) was also examined. The Pd/Al₂O₃ catalyst with 29.8% dispersion of Pd and γ phase of Al₂O₃ exhibited the best catalytic performance. Thus, catalytic activity depends not only on the amount of Pd dispersion but also on the physicochemical properties of Al₂O₃.

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Title
Liquid-Phase Hydrogenation of Maleic Acid over Pd/Al₂O₃ Catalysts Prepared via Deposition–Precipitation Method
Creator
Byun, Mi Yeon; Kim, Ji Sun; Baek, Jae Ho; Park, Dae-Won; Lee, Man Sig
Publisher
Multidisciplinary Digital Publishing Institute
Date Issued
2019-01-17
Description
Succinic acid (SA) is a valuable raw material obtained by hydrogenation of maleic acid (MA). The product selectivity of this reaction is highly dependent on the reaction conditions. This study therefore investigated the effect of the reaction temperature, hydrogen pressure, and reaction time on the liquid-phase hydrogenation of MA by a Pd/Al₂O₃ catalyst. Complete conversion of MA and 100% selectivity for SA were achieved at a temperature of 90 °C, H₂ pressure of 5 bar, and reaction time of 90 min. Fumaric acid (FA) was formed as an intermediate material by hydrogenation of MA under nonoptimal conditions. The impact of the percentage of Pd dispersion and phase of the Al₂O₃ support (γ, θ + α, and α) was also examined. The Pd/Al₂O₃ catalyst with 29.8% dispersion of Pd and γ phase of Al₂O₃ exhibited the best catalytic performance. Thus, catalytic activity depends not only on the amount of Pd dispersion but also on the physicochemical properties of Al₂O₃.
Subject
Hydrogenation; Succinic acid; Supported catalyst; Pd catalyst
Genre
Article
Type
Text
Language
eng
Date Available
2019-06-04
Provider
Vancouver : University of British Columbia Library
Rights
CC BY 4.0
DOI
10.14288/1.0379272
URI
http://hdl.handle.net/2429/70495
Affiliation
Applied Science, Faculty of; Non UBC; Chemical and Biological Engineering, Department of
Citation
Energies 12 (2): 284 (2019)
Publisher DOI
10.3390/en12020284
Peer Review Status
Reviewed
Scholarly Level
Faculty
Rights URI
https://creativecommons.org/licenses/by/4.0/
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CC BY 4.0