HYDROGENATION OF CARBON DIOXIDE ON SIRAL ALUMINOSILICATES MODIFIED WITH COBALT AND PALLADIUM

Sh.F.Tagiyeva Sh.F.Tagiyeva
{"title":"HYDROGENATION OF CARBON DIOXIDE ON SIRAL ALUMINOSILICATES MODIFIED WITH COBALT AND PALLADIUM","authors":"Sh.F.Tagiyeva Sh.F.Tagiyeva","doi":"10.32010/ajcn05012022-81","DOIUrl":null,"url":null,"abstract":"The reaction of hydrogenation of CO2 in flow mode at atmospheric pressure on Siral aluminosilicates with 1, 10, and 40 wt.% SiO2 and containing Co and Co-Pd has been studied. The synthesized catalysts were characterized by XRD and EPR spectroscopy. It has been established that on catalysts containing only cobalt, at a reaction temperature of ≤ 300oC, practically only methane is formed, and at a reaction temperature of T ≥ 300oC, methane and no more than 1% CO are formed. It is shown that with an increase in the SiO2/Al2O3 ratio, a decrease in the methane yield is observed. The introduction of palladium into the composition of the Co/Siral catalyst stimulates the formation of methanol, the yield of which increases with an increase in the reaction temperature and reaches its maximum value at a reaction temperature of 500°C for the Co,Pd/Siral-10 catalyst. The mechanism of the reaction of CO2 hydrogenation to methanol and the role of palladium in this reaction are discussed.\nKeywords: carbon dioxide, hydrogenation, methane, methanol, Siral, Pd, Co.","PeriodicalId":245302,"journal":{"name":"Azerbaijan Journal of Chemical News","volume":"4 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Azerbaijan Journal of Chemical News","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.32010/ajcn05012022-81","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

The reaction of hydrogenation of CO2 in flow mode at atmospheric pressure on Siral aluminosilicates with 1, 10, and 40 wt.% SiO2 and containing Co and Co-Pd has been studied. The synthesized catalysts were characterized by XRD and EPR spectroscopy. It has been established that on catalysts containing only cobalt, at a reaction temperature of ≤ 300oC, practically only methane is formed, and at a reaction temperature of T ≥ 300oC, methane and no more than 1% CO are formed. It is shown that with an increase in the SiO2/Al2O3 ratio, a decrease in the methane yield is observed. The introduction of palladium into the composition of the Co/Siral catalyst stimulates the formation of methanol, the yield of which increases with an increase in the reaction temperature and reaches its maximum value at a reaction temperature of 500°C for the Co,Pd/Siral-10 catalyst. The mechanism of the reaction of CO2 hydrogenation to methanol and the role of palladium in this reaction are discussed. Keywords: carbon dioxide, hydrogenation, methane, methanol, Siral, Pd, Co.
用钴和钯改性铝硅酸盐的二氧化碳加氢反应
研究了含Co和Co- pd的sio_2含量分别为1、10和40 wt.%的sio_2在常压下流动模式下对sio_2的加氢反应。用XRD和EPR对合成的催化剂进行了表征。在只含钴的催化剂上,反应温度≤300℃时,实际上只生成甲烷,反应温度≥300℃时,生成甲烷和不超过1%的CO。结果表明,随着SiO2/Al2O3比的增加,甲烷产率降低。Co,Pd/ sial -10催化剂中钯的加入促进了甲醇的生成,甲醇的产率随着反应温度的升高而增加,Co,Pd/ sial -10催化剂在反应温度为500℃时达到最大值。讨论了CO2加氢制甲醇的反应机理及钯在该反应中的作用。关键词:二氧化碳,加氢,甲烷,甲醇,Siral, Pd, Co
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 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信