首页|H2小分子原位调控负载型NixMoyS@Al2O3用于加氢脱硫的研究

H2小分子原位调控负载型NixMoyS@Al2O3用于加氢脱硫的研究

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通过H2气体小分子原位调控技术制得系列NiMoS-nH2[n=0.5,1.0,1.4,2.0,为H2压力(MPa)]催化剂,活性评价结果表明,2 MPa的H2原位调控制得的NiMoS催化剂(NiMoS-2.0H2)具有最优的加氢脱硫活性;进一步制备具有介孔结构的Al2O3载体,并采用原位生长法,制得NiMoS-2.0H2@Al2O3负载型加氢脱硫催化剂,活性评价结果表明,负载型NiMoS-2.0H2@Al2O3较NiMoS-2.0H2加氢脱硫性能显著提升,在温度240 ℃和压力2 MPa条件下,苯并噻吩脱除率高达73%,脱硫效率约为NiMoS-2.0H2粉末催化剂的两倍.XRD、XPS、N2吸附-脱附表征分析表明,负载型NiMoS-2.0H2@Al2O3具备超高的比表面积,可显著提高NiMoS-2.0H2表面分散,是构成其高活性的重要原因.通过气体小分子原位调控及原位生长制备策略,成功开发一种新型高效非贵金属负载型加氢脱硫催化剂,研究结果可为其他高效加氢脱硫催化剂开发提供设计思路.
Supported NixMoyS@Al2O3 catalyst by in-situ H2 small molecule regulation for hydrodesulfurization
In this paper,a series of NiMoS-nH2[n=0.5,1.0,1.4,2.0,H2 pressure(MPa)]catalysts was prepared using in-situ H2 gas small molecule control technology.The activity evaluation results showed that the NiMoS catalyst(NiMoS-2.0H2)obtained by in-situ control of 2 MPa H2 had the optimal hydrodesulfurization activity.The Al2 O3 support with mesoporous structure was further prepared and utilized during the in-situ synthesis of supported catalyst NiMoS-2.0H2@Al2 O3 for hydrodesulfuriza-tion.The activity evaluation results indicate that the supported NiMoS-2.0H2@Al2 O3 possesses signifi-cantly improved hydrodesulfurization performance than that of NiMoS-2.0H2 powder catalyst sample.Over NiMoS-2.0H2@Al2O3,the removal of benzothiophene is as high as 73%,and the desulfurization efficiency is about twice of NiMoS-2.0H2 powder catalyst under the conditions of 240 ℃and 2 MPa.The XRD,XPS,N2 adsorption-desorption analysis showed that ultra-high specific surface area of loaded NiMoS-2.0H2@Al2O3 can significantly improve the surface dispersion of NiMoS-2.0H2,which constitutes an important reason for its high activity.This study successfully developed a new type of high-efficiency non precious metal supported hydrodesulfurization catalyst through in-situ regulation of gas small molecules and in-situ growth preparation strategy.The research results of this paper can provide design ideas for the develop-ment of other high-efficiency hydrodesulfurization catalysts.

catalyst engineeringsmall molecule regulation strategybimetallic sulfidessupported cata-lystin situ synthesis

任红伟、刘宁、代成娜、王宁、于刚强、陈标华

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北京工业大学,北京 100124

催化剂工程 小分子调控 双金属硫化物 负载型催化剂 原位合成

国家自然科学基金面上项目

22178011

2024

工业催化
西北化工研究院

工业催化

CSTPCD
影响因子:0.504
ISSN:1008-1143
年,卷(期):2024.32(6)
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