加氢脱硫
催化作用
柠檬酸
化学
水溶液
核化学
高分辨率透射电子显微镜
无机化学
磷酸盐
硫化物
X射线光电子能谱
化学工程
有机化学
材料科学
纳米技术
透射电子显微镜
工程类
作者
О. В. Климов,K.A. Nadeina,С. В. Будуква,E.A. Avdeenko,Svetlana V. Cherepanova,Yu. A. Chesalov,E. Yu. Gerasimov,Igor P. Prosvirin,А. С. Носков
标识
DOI:10.1016/j.apcata.2021.118447
摘要
A NiMoP/Al2O3 catalyst deactivated at the industrial plant was subjected to oxidative regeneration and reactivation with water and an aqueous solution of citric acid. The catalyst was studied at all stages by XRD, UV–vis, Raman spectroscopy, FTIR spectroscopy, XPS and HRTEM methods. The catalyst samples after oxidative regeneration, treatment with water and rejuvenation with citric acid were tested in hydrotreatment of the model feedstock and straight-run gasoil. It was established that the regenerated catalyst contained phosphorus strongly bound to the support and soluble or insoluble Ni and Mo compounds. The catalyst after water treatment contained only insoluble Ni and Mo compounds and a phosphate monolayer, while treatment with citric acid resulted in the formation of citrate complex compounds. Ni and Mo compounds in the sulfide form, which were obtained from insoluble components, showed high activity in the target hydrotreating reactions.
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