Selective hydrogenation of maleic anhydride over Pd/Al2O3 catalysts prepared via colloid deposition

Abstract

Pd/Al 2 O 3 catalysts were prepared via colloid deposition and the performance of the catalysts was examined in the selective hydrogenation of maleic anhydride to succinic anhydride. When the reaction was carried on in a batch system with 1,4-dioxane as the solvent (353 K and 1.0 MPa), high conversion of maleic anhydride (>98%) and high selectivity (>99%) for succinic anhydride were observed after 5 h. The as-prepared Pd/Al 2 O 3 catalyst also showed excellent performance in solvent-free system and fixed-bed systems. The maleic anhydride (MA) conversion was greater than 98%, and high selectivity (>99%) for succinic anhydride was obtained after 1600 h in a fixed bed reacter. The results showed that the activity of the Pd/Al 2 O 3 catalysts was excellent due to its high active surface area.

The Complex Way to Sustainability: Petroleum-Based Processes versus Biosynthetic Pathways in the Formation of C4 Chemicals from Syngas

“…Interestingly maleic anhydride, obtained nowadays from the oxidation of n-butane, can be catalytically opened and further hydrogenated to generate succinic acid, a further important C4-building block. 53 The related C4-monocarboxylic acid and C4-aldehyde, butyric acid, and butyraldehyde, can be produced on a large scale via hydroformylation (and further oxidation) of propylene using common ruthenium and cobalt hydrido carbonyls complexes as homogeneous catalysts. 54 However, some trends in the production of long chain carboxylic acids (e.g., C6-caproic-, C8-caprylic-, and C10-capric acid) point markedly toward mild fermentation processes based on renewable resources, leaving aside the more classical synthetic ways involving pure triglyceride chemistry.…”

Liquid-Phase Hydrogenation of Maleic Acid over Pd/Al2O3 Catalysts Prepared via Deposition–Precipitation Method

“…It is usually obtained by hydrogenation of maleic anhydride (MAN), although the product of this reaction varies depending on the reaction conditions. Several researches have investigated various catalysts for this reaction, such as Ru/C, Ni/HY-Al 2 O 3 , Pd/C, Pd/SiO 2 , Ni/TiO 2 and Pd/Al 2 O 3 [3][4][5][6][7][8][9]. The reaction pathways of hydrogenation of maleic acid (MA) are shown in Figure 1.…”

“…Torres et al reported achieving 100% selectivity for succinic anhydride through the reaction catalyzed by a mesoporous Ni/TiO 2 catalyst at low temperature [8]. Yuan et al reported achieving MA conversion of 98% and succinic anhydride selectivity of 99% using Pd/Al 2 O 3 catalyst under 1.0 MPa of H 2 pressure and 1,4-dioxane as solvent [5]. Among the various catalysts, the Pd/Al 2 O 3 catalyst has an advantage for the chemical industry due to the high thermal stability and high dispersion of Pd [10,11].…”

Efficient Oxidative Transformation of Furfural into Succinic Acid over Acidic Metal-Free Graphene Oxide

“…For a wider utilization of SA, development of the catalyzed chemical synthesis method with high efficiency is an important issue. Maleic anhydride (or maleic acid) was the oxidation product from n -butene or butadiene over metal cathodes in electronic reactions or precious metal-catalysts under various conditions. − Traditionally, SA was produced by hydration and/or hydrogenation of fossil-derived maleic anhydride or maleic acid (MA). In 1960s, in the homogeneous catalytic system, reduction of MA by chromous sulfate in water gave SA in 86% yield .…”