The mechanism of oleic acid deoxygenation to green diesel hydrocarbon using porous aluminosilicate catalysts

Q1 Social Sciences South African Journal of Chemical Engineering Pub Date : 2024-05-03 DOI:10.1016/j.sajce.2024.04.009

Reva Edra Nugraha , Hari Purnomo , Abdul Aziz , Holilah Holilah , Hasliza Bahruji , Nurul Asikin-Mijan , Suprapto Suprapto , Yun Hin Taufiq-Yap , Aishah Abdul Jalil , Hartati Hartati , Didik Prasetyoko

{"title":"The mechanism of oleic acid deoxygenation to green diesel hydrocarbon using porous aluminosilicate catalysts","authors":"Reva Edra Nugraha , Hari Purnomo , Abdul Aziz , Holilah Holilah , Hasliza Bahruji , Nurul Asikin-Mijan , Suprapto Suprapto , Yun Hin Taufiq-Yap , Aishah Abdul Jalil , Hartati Hartati , Didik Prasetyoko","doi":"10.1016/j.sajce.2024.04.009","DOIUrl":null,"url":null,"abstract":"<div><p>The role of mesoporous solid acid aluminosilicate in the oleic acid deoxygenation was elucidated using ZSM-5 and Al-MCM-41 impregnated with Ni. The mesoporous supports were synthesized using a similar initial Si/Al ratio but employing different templates to vary the mesopores. ZSM-5_T produced interparticle mesopores when using TPAOH (tetrapropylammonium hydroxide) as a template. Meanwhile, ZSM-5_S with a well-defined intraparticle mesoporous channel was formed using a silicalite template. Al-MCM-41 synthesized without a template produced one-dimensional highly ordered mesoporous channels. The arrangement of mesoporosity in aluminosilicate determined the mechanistic pathway of oleic acid conversion into hydrocarbon. Oleic acid underwent primary thermal cracking into carboxylic acid before progressing into the subsequent decarbonylation reaction. The diesel hydrocarbon yield was enhanced following the order of Al-MCM-41>ZSM-5_<em>S</em>>ZSM-5_<em>T</em>>blank reaction. Large intraparticle mesoporosity produced long-chain carboxylic acid from catalytic cracking of oleic acid, which was subsequently deoxygenated into long-chain hydrocarbons.</p></div>","PeriodicalId":21926,"journal":{"name":"South African Journal of Chemical Engineering","volume":"49 ","pages":"Pages 122-135"},"PeriodicalIF":0.0000,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1026918524000568/pdfft?md5=24d1bf5f9955d2ba3c8a44bb005be79c&pid=1-s2.0-S1026918524000568-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"South African Journal of Chemical Engineering","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1026918524000568","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Social Sciences","Score":null,"Total":0}

引用次数: 0

Abstract

The role of mesoporous solid acid aluminosilicate in the oleic acid deoxygenation was elucidated using ZSM-5 and Al-MCM-41 impregnated with Ni. The mesoporous supports were synthesized using a similar initial Si/Al ratio but employing different templates to vary the mesopores. ZSM-5_T produced interparticle mesopores when using TPAOH (tetrapropylammonium hydroxide) as a template. Meanwhile, ZSM-5_S with a well-defined intraparticle mesoporous channel was formed using a silicalite template. Al-MCM-41 synthesized without a template produced one-dimensional highly ordered mesoporous channels. The arrangement of mesoporosity in aluminosilicate determined the mechanistic pathway of oleic acid conversion into hydrocarbon. Oleic acid underwent primary thermal cracking into carboxylic acid before progressing into the subsequent decarbonylation reaction. The diesel hydrocarbon yield was enhanced following the order of Al-MCM-41>ZSM-5_S>ZSM-5_T>blank reaction. Large intraparticle mesoporosity produced long-chain carboxylic acid from catalytic cracking of oleic acid, which was subsequently deoxygenated into long-chain hydrocarbons.

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

使用多孔硅酸铝催化剂将油酸脱氧生成绿色柴油碳氢化合物的机理

使用浸渍了镍的 ZSM-5 和 Al-MCM-41 阐明了介孔固体酸性铝硅酸盐在油酸脱氧过程中的作用。合成介孔支撑物时使用了相似的初始硅/铝比例，但采用了不同的模板来改变介孔。当使用 TPAOH（四丙基氢氧化铵）作为模板时，ZSM-5_T 产生了颗粒间的介孔。同时，使用硅灰石模板形成的 ZSM-5_S 具有明确的颗粒内介孔通道。无模板合成的 Al-MCM-41 产生了一维高度有序的介孔通道。铝硅酸盐中的介孔排列决定了油酸转化为碳氢化合物的机理途径。油酸经过初级热裂解成为羧酸，然后进入后续的脱羰基反应。柴油碳氢化合物的产量按照 Al-MCM-41>ZSM-5_S>ZSM-5_T>空白反应的顺序提高。催化裂解油酸会产生长链羧酸，随后长链羧酸被脱氧成长链碳氢化合物。

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

South African Journal of Chemical Engineering Social Sciences-Education

CiteScore

8.40

自引率

0.00%

发文量

100

审稿时长

33 weeks

期刊介绍： The journal has a particular interest in publishing papers on the unique issues facing chemical engineering taking place in countries that are rich in resources but face specific technical and societal challenges, which require detailed knowledge of local conditions to address. Core topic areas are: Environmental process engineering • treatment and handling of waste and pollutants • the abatement of pollution, environmental process control • cleaner technologies • waste minimization • environmental chemical engineering • water treatment Reaction Engineering • modelling and simulation of reactors • transport phenomena within reacting systems • fluidization technology • reactor design Separation technologies • classic separations • novel separations Process and materials synthesis • novel synthesis of materials or processes, including but not limited to nanotechnology, ceramics, etc. Metallurgical process engineering and coal technology • novel developments related to the minerals beneficiation industry • coal technology Chemical engineering education • guides to good practice • novel approaches to learning • education beyond university.