Liquid-Phase Hydrogenation of Maleic Acid over Pd/Al 2 O 3 Catalysts Prepared via Deposition–Precipitation Method

Mi Yeon Byun, Ji Sun Kim, Jae Ho Baek, Dae-Won Park and Man Sig Lee
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Mi Yeon Byun: Ulsan Regional Division, Korea Institute of Industrial Technology (KITECH), Ulsan 44413, Korea
Ji Sun Kim: Department of Chemical & Biological Engineering, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada
Jae Ho Baek: Ulsan Regional Division, Korea Institute of Industrial Technology (KITECH), Ulsan 44413, Korea
Dae-Won Park: Department of Polymer Science and Chemical Engineering, Pusan National University, Busan 46241, Korea
Man Sig Lee: Ulsan Regional Division, Korea Institute of Industrial Technology (KITECH), Ulsan 44413, Korea

Energies, 2019, vol. 12, issue 2, 1-8

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/Al 2 O 3 catalyst. Complete conversion of MA and 100% selectivity for SA were achieved at a temperature of 90 °C, H 2 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 Al 2 O 3 support (γ, θ + α, and α) was also examined. The Pd/Al 2 O 3 catalyst with 29.8% dispersion of Pd and γ phase of Al 2 O 3 exhibited the best catalytic performance. Thus, catalytic activity depends not only on the amount of Pd dispersion but also on the physicochemical properties of Al 2 O 3 .

Keywords: hydrogenation; succinic acid; supported catalyst; Pd catalyst (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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