Effect of Reduction Temperature on Performance of Ni<sub>2</sub>P/SiO<sub>2</sub> for Deoxygenation of Methyl Laurate

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Abstract

A series of Ni₂P/SiO₂ catalysts were prepared by the temperature-programmed reduction method from the precursors derived from different P sources (ammonium dihydrogen phosphate(ADP) and hypophosphorous acid(HA)). The effect of reduction temperature on the structure and performance of the catalysts prepared with HA as phosphrous source for the deoxygenation of methyl laurate was studied by means of H₂-TPR, XRD, CO chemisorption, NH₃-TPD, H₂-TPD and activity test. For the precursor with HA as phosphrous source, as the reduction temperature increased, the crystallite size of Ni₂P and CO uptake of the prepared catalyst increased, while the content of phosphrous and acid amount on the catalyst surface decreased. Moreover, the activities of the prepared catalysts for the deoxygenation of methyl laurate tended to increase. This is closely related to the increase of the amount of Ni sites and the decrease of the phosphrous content. Compared with that with ADPas phosphrous source, the Ni₂P/SiO₂ catalyst with HAas phosphrous source preferably catalyzed the hydrodeoxygenation pathway, which may result from its stronger acidity.

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	Articles by authors
	Tang Mingxiao
	Chen Jixiang

Keywords： nickel phosphide catalyst； hypophosphorous acid； hydrodeoxygenation； decarbonylation

Received 2014-04-09;

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Tang Mingxiao, Chen Jixiang.Effect of Reduction Temperature on Performance of Ni₂P/SiO₂ for Deoxygenation of Methyl Laurate[J] Chemcial Industry and Engineering, 2016,V33(3): 1-7

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