富丙烯条件下pt基选择性氢燃烧催化剂的性能及结构演变

Q3 Energy

燃料化学学报 Pub Date : 2023-05-01 DOI:10.1016/S1872-5813(23)60336-6

Huai-lu SUN , Kai-xin LI , Wen-long YU , Jun-wei DING , Yu-ling SHAN

{"title":"富丙烯条件下pt基选择性氢燃烧催化剂的性能及结构演变","authors":"Huai-lu SUN , Kai-xin LI , Wen-long YU , Jun-wei DING , Yu-ling SHAN","doi":"10.1016/S1872-5813(23)60336-6","DOIUrl":null,"url":null,"abstract":"<div><p>In the present study, the kinetic behaviour and active sites evolution processes of Pt-based catalysts were investigated. It was found that highly selective hydrogen combustion could be achieved over Sn modified Pt-based catalysts in presence of both propane and propene (over 98%). The stability tests, kinetic study and catalyst characterization revealed that the existence of oxygenated species is the reason for accelerated coking reactions. The formation of graphitized cokes serving as additional unselective active sites and the oxidation of tin in PtSn alloy phases are the primary reasons causing the catalytic selectivity loss during long-run tests under propene-rich condition.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The performances and structure evolution of Pt-based catalysts for selective hydrogen combustion under propene-rich conditions\",\"authors\":\"Huai-lu SUN , Kai-xin LI , Wen-long YU , Jun-wei DING , Yu-ling SHAN\",\"doi\":\"10.1016/S1872-5813(23)60336-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In the present study, the kinetic behaviour and active sites evolution processes of Pt-based catalysts were investigated. It was found that highly selective hydrogen combustion could be achieved over Sn modified Pt-based catalysts in presence of both propane and propene (over 98%). The stability tests, kinetic study and catalyst characterization revealed that the existence of oxygenated species is the reason for accelerated coking reactions. The formation of graphitized cokes serving as additional unselective active sites and the oxidation of tin in PtSn alloy phases are the primary reasons causing the catalytic selectivity loss during long-run tests under propene-rich condition.</p></div>\",\"PeriodicalId\":15956,\"journal\":{\"name\":\"燃料化学学报\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"燃料化学学报\",\"FirstCategoryId\":\"1087\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1872581323603366\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"Energy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"燃料化学学报","FirstCategoryId":"1087","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1872581323603366","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Energy","Score":null,"Total":0}

引用次数: 0

摘要

在本研究中，研究了Pt基催化剂的动力学行为和活性位点的演变过程。研究发现，在丙烷和丙烯（超过98%）的存在下，在Sn改性的Pt基催化剂上可以实现高选择性的氢气燃烧。稳定性测试、动力学研究和催化剂表征表明，氧化物种的存在是加速焦化反应的原因。石墨化焦炭作为额外的非选择性活性位点的形成和锡在PtSn合金相中的氧化是导致富丙烯条件下长期试验中催化选择性损失的主要原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

The performances and structure evolution of Pt-based catalysts for selective hydrogen combustion under propene-rich conditions

In the present study, the kinetic behaviour and active sites evolution processes of Pt-based catalysts were investigated. It was found that highly selective hydrogen combustion could be achieved over Sn modified Pt-based catalysts in presence of both propane and propene (over 98%). The stability tests, kinetic study and catalyst characterization revealed that the existence of oxygenated species is the reason for accelerated coking reactions. The formation of graphitized cokes serving as additional unselective active sites and the oxidation of tin in PtSn alloy phases are the primary reasons causing the catalytic selectivity loss during long-run tests under propene-rich condition.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

燃料化学学报 Chemical Engineering-Chemical Engineering (all)

CiteScore

2.80

自引率

0.00%

发文量

5825

期刊介绍： Journal of Fuel Chemistry and Technology (Ranliao Huaxue Xuebao) is a Chinese Academy of Sciences(CAS) journal started in 1956, sponsored by the Chinese Chemical Society and the Institute of Coal Chemistry, Chinese Academy of Sciences(CAS). The journal is published bimonthly by Science Press in China and widely distributed in about 20 countries. Journal of Fuel Chemistry and Technology publishes reports of both basic and applied research in the chemistry and chemical engineering of many energy sources, including that involved in the nature, processing and utilization of coal, petroleum, oil shale, natural gas, biomass and synfuels, as well as related subjects of increasing interest such as C1 chemistry, pollutions control and new catalytic materials. Types of publications include original research articles, short communications, research notes and reviews. Both domestic and international contributors are welcome. Manuscripts written in Chinese or English will be accepted. Additional English titles, abstracts and key words should be included in Chinese manuscripts. All manuscripts are subject to critical review by the editorial committee, which is composed of about 10 foreign and 50 Chinese experts in fuel science. Journal of Fuel Chemistry and Technology has been a source of primary research work in fuel chemistry as a Chinese core scientific periodical.