Ahmed S. Al-Fatesh , Yuvrajsinh B. Rajput , Mohammed O. Bayazed , Maher M. Alrashed , Jehad K. Abu-Dahrieh , Ahmed Yagoub Elnour , Ahmed A. Ibrahim , Anis H. Fakeeha , Ahmed E. Abasaeed , Rawesh Kumar
{"title":"镓负载和工艺条件对 Ni/ZrO2-Al2O3 催化剂干法转化甲烷生产 H2 的影响","authors":"Ahmed S. Al-Fatesh , Yuvrajsinh B. Rajput , Mohammed O. Bayazed , Maher M. Alrashed , Jehad K. Abu-Dahrieh , Ahmed Yagoub Elnour , Ahmed A. Ibrahim , Anis H. Fakeeha , Ahmed E. Abasaeed , Rawesh Kumar","doi":"10.1016/j.apcata.2024.119794","DOIUrl":null,"url":null,"abstract":"<div><p>Ni stabilized over zirconia-alumina support (10Ni/10ZrAl), and further enhanced with gallium promotion, was examined for its efficacy in dry reforming of methane. 1–3 wt % gallium addition to the 10Ni/10ZrAl catalyst led to an even distribution of gallium throughout the catalyst, increased formation of NiO species that are easily reduced, and deposition of less graphitic carbon compared to an unpromoted catalyst. 10Ni2Ga/10ZrAl catalyst has least carbon deposition and highest H<sub>2</sub> yield (26 %) at 600 <sup>°</sup>C. Process optimization is performed over best catalyst, 10Ni2Ga/10ZrAl, by varying space velocity from 30,000 cm<sup>3</sup> g<sup>−1</sup>h<sup>−1</sup> to 48,000 cm<sup>3</sup>g<sup>−1</sup>h<sup>−1</sup>, reaction temperature from 550 °C to 800 °C, and CH<sub>4</sub>/CO<sub>2</sub> from 0.5 to 1. A regression model equation is set as the function of factors, and the response as H<sub>2</sub> yield through research surface methodology under center composite design. The model predicted an optimal H<sub>2</sub> yield of 91.95 % which is closely validated by 90.09 % H<sub>2</sub> yield experimental at optimized conditions.</p></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0926860X24002382/pdfft?md5=49ef2d5207cbe4a58aae2047343b38b4&pid=1-s2.0-S0926860X24002382-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Impact of gallium loading and process conditions on H2 production from dry reforming of methane over Ni/ZrO2-Al2O3 catalysts\",\"authors\":\"Ahmed S. Al-Fatesh , Yuvrajsinh B. Rajput , Mohammed O. Bayazed , Maher M. Alrashed , Jehad K. Abu-Dahrieh , Ahmed Yagoub Elnour , Ahmed A. Ibrahim , Anis H. Fakeeha , Ahmed E. Abasaeed , Rawesh Kumar\",\"doi\":\"10.1016/j.apcata.2024.119794\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ni stabilized over zirconia-alumina support (10Ni/10ZrAl), and further enhanced with gallium promotion, was examined for its efficacy in dry reforming of methane. 1–3 wt % gallium addition to the 10Ni/10ZrAl catalyst led to an even distribution of gallium throughout the catalyst, increased formation of NiO species that are easily reduced, and deposition of less graphitic carbon compared to an unpromoted catalyst. 10Ni2Ga/10ZrAl catalyst has least carbon deposition and highest H<sub>2</sub> yield (26 %) at 600 <sup>°</sup>C. Process optimization is performed over best catalyst, 10Ni2Ga/10ZrAl, by varying space velocity from 30,000 cm<sup>3</sup> g<sup>−1</sup>h<sup>−1</sup> to 48,000 cm<sup>3</sup>g<sup>−1</sup>h<sup>−1</sup>, reaction temperature from 550 °C to 800 °C, and CH<sub>4</sub>/CO<sub>2</sub> from 0.5 to 1. A regression model equation is set as the function of factors, and the response as H<sub>2</sub> yield through research surface methodology under center composite design. The model predicted an optimal H<sub>2</sub> yield of 91.95 % which is closely validated by 90.09 % H<sub>2</sub> yield experimental at optimized conditions.</p></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-05-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0926860X24002382/pdfft?md5=49ef2d5207cbe4a58aae2047343b38b4&pid=1-s2.0-S0926860X24002382-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis A: General\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926860X24002382\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X24002382","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Impact of gallium loading and process conditions on H2 production from dry reforming of methane over Ni/ZrO2-Al2O3 catalysts
Ni stabilized over zirconia-alumina support (10Ni/10ZrAl), and further enhanced with gallium promotion, was examined for its efficacy in dry reforming of methane. 1–3 wt % gallium addition to the 10Ni/10ZrAl catalyst led to an even distribution of gallium throughout the catalyst, increased formation of NiO species that are easily reduced, and deposition of less graphitic carbon compared to an unpromoted catalyst. 10Ni2Ga/10ZrAl catalyst has least carbon deposition and highest H2 yield (26 %) at 600 °C. Process optimization is performed over best catalyst, 10Ni2Ga/10ZrAl, by varying space velocity from 30,000 cm3 g−1h−1 to 48,000 cm3g−1h−1, reaction temperature from 550 °C to 800 °C, and CH4/CO2 from 0.5 to 1. A regression model equation is set as the function of factors, and the response as H2 yield through research surface methodology under center composite design. The model predicted an optimal H2 yield of 91.95 % which is closely validated by 90.09 % H2 yield experimental at optimized conditions.
期刊介绍:
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.