Vapor-phase selective hydrogenation of maleic anhydride to succinic anhydride over Ni/TiO2 catalysts |
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| Affiliation: | 1. Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Qianjin Road 2699, Changchun 130012, PR China;2. Shanghai Huayi (Group) Company Technology Research Institute, Longwu Road 4600, Shanghai 200241, PR China;3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Qianjin Road 2699, Changchun 130012, PR China;1. University of Eastern Finland, Department of Chemistry, P.O. Box 111, FI-80101 Joensuu, Finland;2. Dinex Ecocat Oy, Typpitie 1, Oulu FI-90620, Finland;1. Beijing Key Laboratory of Green Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;2. Department of Chemical Engineering, Columbia University, New York, NY 10027, USA;3. Chemistry Department, Brookhaven National Laboratory, New York, NY 11973, USA;1. Université de Poitiers, CNRS UMR 7285 IC2MP, Institut de Chimie des Milieux et des Matériaux de Poitiers, 4 rue Michel Brunet, 86022 Poitiers Cedex, France;2. IRCELYON, Institut de recherches sur la catalyse et l’environnement de Lyon, UMR 5256 CNRS-Université Lyon1, 2 avenue Albert Einstein, 69626 Villeurbanne, France |
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| Abstract: | A series of supported Ni/TiO2 catalysts were prepared by incipient wetness impregnation method under different calcination temperatures, and the as-prepared catalysts were characterized by X-ray diffraction (XRD), hydrogen temperature-programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS). The catalytic properties of these Ni/TiO2 catalysts were investigated in the vapor phase hydrogenation of maleic anhydride (MA) to succinic anhydride (SA). The results showed that the catalytic activity and the selectivity of the Ni/TiO2 catalysts were strongly affected by the calcination temperature. The catalyst calcined at 1023 K showed a relatively higher SA selectivity of 96% at high MA conversion (96%) under the tested conditions (493 K and 0.2 MPa). The improvement of SA selectivity could be mainly assigned to the presence of suitable metal–support interaction, which can play a role in catalytic property of active nickel species as electron promoter. Besides, the change of surface properties of TiO2 support with the increasing calcination temperatures, e.g., the decrease of Lewis acid sites, might also have some positive role in reducing the side-products like γ-butyrolacetone (GBL). |
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| Keywords: | Maleic anhydride Hydrogenation Succinic anhydride |
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