4.1 Article

Roles of Promoter and Support of Sulfided Mo-based Catalyst in Selective Hydrotreating of Palm Fatty Acid Distillate

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JOURNAL OF THE JAPAN PETROLEUM INSTITUTE
卷 65, 期 1, 页码 18-26

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JAPAN PETROLEUM INST
DOI: 10.1627/jpi.65.18

关键词

Hydrodeoxygenation; Titania alumina support; Cobalt molybdenum catalyst; Palm fatty acid distillate; Metal support interaction; Phase change material

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The effects of Co/Mo mole ratio and TiO2 loadings on hydrodeoxygenation and decarboxylation/decarbonylation reactions in the hydrotreating of PFAD were investigated. CoMoS phase exhibited both HDO and DCO activities, while the addition of TiO2 to form TiMoS phase promoted the HDO reaction.
A series of CoMo/A1203 catalysts with various Co/Mo mole ratios and a series of CoMo/TiO2-A1203 catalysts supported on TiO2 coating Al2O3 were prepared. The effects of Co/Mo mole ratio and TiO2 loadings on Al2O3 on hydrodeoxygenation (HDO) and decarboxylation/decarbonylation (DCO) in the hydrotreating of palm fatty acid distillate (PFAD) were investigated. The catalysts were characterized by BET, XRF, pulse NO chemisorption, and H2-TPR. The maximum yields of n-C16 and n-C18 was observed at Co/Mo = 0.05 for the CoMo/A1203 series, and the yield of n-C15 and n-C17 was increased at Co/Mo > 0.05. CoMoS phase apparently has both HDO and DCO activities. CoMo(0.05)/Ti(20)-Al showed the maximum yields of n-C16 and n-C18 due to the formation of TiMoS in all catalysts. TiMoS phase may be formed by adding TiO2 on Al2O3 and promotes the HDO reaction, but not isomerization or cracking.

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