文献类型：期刊文献

英文题名：Hydrogen spillover-induced low-temperature activation of NiCu/Al?O? catalyst for efficient polyalphaolefin hydrogenation

作者：Wang, Jie[1]; Chen, Yilong[1]; Zhang, Chengxi[2]; Meng, Xuan[1]; Liu, Naiwang[1]; Shi, Li[1]

机构：[1] International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Sinopec Research Institute of Petroleum Processing Co., Ltd, China

年份：2026

卷号：589

外文期刊名：Molecular Catalysis

收录：EI(收录号：20254719529472)

语种：英文

外文关键词：Aluminum oxide - Catalyst activity - Chemical activation - Copper compounds - Dispersions - Hydrogen - Molar ratio - Nickel - Nickel compounds - Precipitation (chemical) - Temperature

摘要：To our knowledge, this is the first time the NixCuy/Al2O3 catalyst has been prepared by the deposition-precipitation method and applied to the hydrogenation synthesis of polyalphaolefins (PAO). The effects of the Ni/Cu molar ratio, catalyst preparation conditions, and reduction temperature on the hydrogenation performance of these catalysts were systematically investigated. The 200 °C low-temperature reduction strategy effectively inhibited the sintering of active sites, thereby significantly improving metal dispersion and reducibility. The characterization results show that the introduction of Cu promotes the dispersion of Ni and the activation ability of H2. Combined with the synergistic effect of the mesoporous Al2O3 carrier, the structure of the catalyst is optimized. Among these catalysts, Ni3Cu1/Al2O3 exhibits the optimal hydrogenation activity and stability under low-temperature reduction conditions. This superiority is attributed to the hydrogen spillover effect of Cu, which promotes the migration of active hydrogen to Ni sites and thus reduces the reaction energy barrier. This catalyst still maintains high activity and stability under high space velocity conditions, demonstrating a promising industrial application prospect. Copyright ? 2025. Published by Elsevier B.V.