Nickel–molybdenum and cobalt–molybdenum sulfide hydrogenation and hydrodesulphurization catalysts synthesized in situ from bimetallic precursors
作者： N. N. Petrukhina , I. A. Sizova , A. L. Maksimov
DOI: 10.1134/S2070050417030102
关键词:
摘要: Unsupported nickel–molybdenum and cobalt–molybdenum sulfide catalysts are synthesized via the in situ decomposition of water-soluble bimetallic precursors a hydrocarbon feedstock using complexes with citric, oxalic, succinic, glutaric, tartaric acids as precursors. The characterized by means transmission electron microscopy X-ray photoelectron spectroscopy. catalyst activity hydrogenation bicyclic aromatic hydrocarbons hydrodesulfurization dibenzothiophene is studied. effect composition precursor solution emulsion has on resulting determined. It shown that reaches high values even after 1 h reaction. mono-, di-, trimethylnaphthalenes ethylnaphthalene optimum promoter-to-molybdenum ratio (0.25: 1) found. does not fall during recycling, due to elimination negative water contained emulsion, which results oxidation surface. After second reaction cycle, particles longer have greater number MoS2 layers than respective parameters first cycle. XPS shows content oxygen catalyst’s surface falls while fraction metals environment sulfur state grows.
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