Preparation of nickel phosphide hydrodesulfurization catalysts with low P/Ni ratio using B2O3 modified γ-Al2O3 as support
MUHAMMAD Waqas Qureshi1, CHU Shuang1, LI Xiang2, ZHOU Xue-rong1, HE Ming1, WANG An-jie1
1. School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China; 2. College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
Abstract: B2O3 is inserted into γ-Al2O3 by an incipient wetness impregnation method,which is used as a support to prepare nickel phosphide catalysts through temperature-programmed reduction method using a nickel phosphate precursor with a low P/Ni ratio (1.2).The hydrodesulfurization performance of the catalyst is investigated.It is demonstrated that B2O3 may hinder the loss of phosphorus by inhibiting the reaction between phosphate precursors and γ-Al2O3.The minimum content of B2O3 in γ-Al2O3 required for the preparation of Ni2P shall be between 10 wt% and 20 wt%.Ni12P5 will be obtained if the content of B2O3 is below 10 wt%.Addition of B2O3 in γ-Al2O3 support can lift up the hydrodesulfurization activity of the catalyst,but the activity will drop if the content of B2O3 exceeds 10%.Dibenzothiophene reacts on nickel phosphide catalyst mainly through direct desulfurization pathway,and the addition of B2O3 favors the hydrogenation pathway.
作者简介: Muhammad Waqas Qureshi (1990-),男,硕士研究生,研究方向为加氢脱硫,waqas-qureshi50@yahoo.com
引用本文:
Muhammad Waqas Qureshi, 楚爽, 李翔, 周学荣, 何明, 王安杰. 以B2O3改性γ-Al2O3为载体制备低P/Ni摩尔比磷化镍加氢脱硫催化剂的研究[J]. 现代化工, 2021, 41(4): 122-126,131.
MUHAMMAD Waqas Qureshi, CHU Shuang, LI Xiang, ZHOU Xue-rong, HE Ming, WANG An-jie. Preparation of nickel phosphide hydrodesulfurization catalysts with low P/Ni ratio using B2O3 modified γ-Al2O3 as support. Modern Chemical Industry, 2021, 41(4): 122-126,131.
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