文献类型：期刊文献

英文题名：Low supported nickel-cobalt catalyst for hydrogenation of maleic anhydride

作者：Chen, Mingrong[1];Meng, Xuan[1];Liu, Naiwang[1];Shi, Li[1]

机构：[1]East China Univ Sci & Technol, Shanghai 200237, Peoples R China

年份：2023

卷号：331

外文期刊名：FUEL

收录：;EI(收录号：20223612689628);WOS:【SCI-EXPANDED(收录号:WOS:000863094000004)】；

基金：The research was sponsored financially by the National Science Foundation for Young Scientists of China (No. 21706065) .

语种：英文

外文关键词：Bimetallic Catalyst; Hydrogenation; Maleic anhydride; Ni-based catalyst; Succinic anhydride

摘要：In order to prepare supported catalysts with low-metal loading, a series of NiCo/Clay catalysts were prepared and used in the hydrogenation of maleic anhydride. The hydrogenation reaction was carried out in a fixed-bed for 8 h with reaction pressure = 1 MPa, reaction temperature = 180 degrees C, molar ratio of H-2: maleic anhydride = 50, WHSV = 2 h(-1). Ni4Co1/Clay (loaded 3 wt%Ni and 0.75 wt%Co) can maintain no obvious catalyst deactivation within 8 h. The overall conversion of maleic anhydride is not less than 95 %, and the selectivity of succinic anhydride is up to 100 %. N-2 adsorption-desorption characterization, X-ray diffraction, temperature-programmed reduction, temperature-programmed desorption, X-ray photoelectron spectroscopy and transmission electron microscopy were performed to verify the changes in catalyst morphology, active species, reduction performance and hydrogenation activity after adding Co as a promoter. With the addition of Co additive, the distribution of active sites on the carrier is more uniform, the grain size of active metal becomes smaller and the reduction temperature decreases. The addition of Co not only increased the active center of the catalyst but also effectively avoided the catalyst's deactivation.