Effects of Nickel Promotion on the Catalytic Performance of In Situ Synthesized Suspensions of Molybdenum Disulfide Nanoparticles

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-12-06 DOI:10.1134/S0965544123060300

L. A. Zekel, A. E. Batov, M. Ya. Visaliev, N. A. Kubrin, A. U. Dandaev, Kh. M. Kadiev

{"title":"Effects of Nickel Promotion on the Catalytic Performance of In Situ Synthesized Suspensions of Molybdenum Disulfide Nanoparticles","authors":"L. A. Zekel, A. E. Batov, M. Ya. Visaliev, N. A. Kubrin, A. U. Dandaev, Kh. M. Kadiev","doi":"10.1134/S0965544123060300","DOIUrl":null,"url":null,"abstract":"The study investigates the activity of in situ synthesized suspensions of nickel-promoted molybdenum disulfide particles in the hydroconversion of crude oil vacuum residues. The catalyst suspensions were prepared in situ from water-in-oil emulsions of aqueous solutions of precursors, specifically ammonium paramolybdate and nickel nitrate. The catalytic tests were carried out in a flow-type reactor at 430°C, WHSV 1 h–1, and 7 MPa hydrogen, with the Mo:Ni atomic ratio in the catalyst particles ranging from 1:0.022 to 1:1.43. The XRD of the toluene-insoluble solids (TIS) extracted from the hydrogenates identified sulfides such as MoS2, Ni3S4, and Ni3S2 in the dispersed catalyst. Increasing the nickel content in the catalyst favored its hydrogenation activity, which was indicated by an enhancement in the feed conversion, an increase in the content of paraffins and naphthenes, and a decrease in the sulfur content in the distillates and TIS derived from the hydrogenates. The conversion of high-molecular-weight feed components (resins, asphaltenes, and heavy aromatics) was enhanced as a result of the nickel promotion of the dispersed MoS2.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S0965544123060300","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The study investigates the activity of in situ synthesized suspensions of nickel-promoted molybdenum disulfide particles in the hydroconversion of crude oil vacuum residues. The catalyst suspensions were prepared in situ from water-in-oil emulsions of aqueous solutions of precursors, specifically ammonium paramolybdate and nickel nitrate. The catalytic tests were carried out in a flow-type reactor at 430°C, WHSV 1 h^–1, and 7 MPa hydrogen, with the Mo:Ni atomic ratio in the catalyst particles ranging from 1:0.022 to 1:1.43. The XRD of the toluene-insoluble solids (TIS) extracted from the hydrogenates identified sulfides such as MoS₂, Ni₃S₄, and Ni₃S₂ in the dispersed catalyst. Increasing the nickel content in the catalyst favored its hydrogenation activity, which was indicated by an enhancement in the feed conversion, an increase in the content of paraffins and naphthenes, and a decrease in the sulfur content in the distillates and TIS derived from the hydrogenates. The conversion of high-molecular-weight feed components (resins, asphaltenes, and heavy aromatics) was enhanced as a result of the nickel promotion of the dispersed MoS₂.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

镍促进对二硫化钼纳米颗粒原位合成悬浮液催化性能的影响

摘要本研究调查了原位合成的镍促进二硫化钼颗粒悬浮液在原油真空残渣加氢转化中的活性。催化剂悬浮液是由前驱体（特别是顺钼酸铵和硝酸镍）水溶液的油包水乳液原位制备的。催化试验是在 430°C、WHSV 1 h-1 和 7 MPa 氢气条件下的流动式反应器中进行的，催化剂颗粒中 Mo:Ni 的原子比为 1:0.022 至 1:1.43。从氢化物中提取的甲苯不溶物（TIS）的 XRD 发现分散催化剂中存在硫化物，如 MoS2、Ni3S4 和 Ni3S2。增加催化剂中的镍含量有利于提高其加氢活性，具体表现为进料转化率提高、石蜡和环烷烃含量增加、馏分油和从加氢产物中提取的 TIS 中的硫含量降低。由于分散 MoS2 的镍促进作用，高分子量进料成分（树脂、沥青烯和重芳烃）的转化率得到了提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.