{"title":"V2O5-WO3/TiO2和fe -沸石商用催化剂上标准NH3-SCR反应动力学方面的动力学建模","authors":"I. Nova, M. Colombo, E. Tronconi","doi":"10.2516/OGST/2011132","DOIUrl":null,"url":null,"abstract":"Dynamic kinetic data collected over commercial V2 O5 -WO3 /TiO2 and Fe-zeolite catalysts analyzing the standard NH3 -SCR of NO for the abatement of NOx from vehicle exhausts showed transient effects at low temperatures related to the inhibiting action of excess ammonia. In order to describe such transient effects, a specific rate expression accounting for NH3 inhibition of the standard SCR reaction is needed in mathematical models of real SCR converters. We present herein a dual-site Mars-Ven Krevelen-type rate equation suitable to describe dynamic features associated with ammonia injection and shut-off over both V-based and Fe-zeolite catalysts.","PeriodicalId":19444,"journal":{"name":"Oil & Gas Science and Technology-revue De L Institut Francais Du Petrole","volume":"68 1","pages":"681-691"},"PeriodicalIF":0.0000,"publicationDate":"2011-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"20","resultStr":"{\"title\":\"Kinetic Modeling of Dynamic Aspects of the Standard NH3-SCR Reaction Over V2O5-WO3/TiO2 and Fe-Zeolite Commercial Catalysts for the Aftertreatment of Diesel Engines Exhausts\",\"authors\":\"I. Nova, M. Colombo, E. Tronconi\",\"doi\":\"10.2516/OGST/2011132\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Dynamic kinetic data collected over commercial V2 O5 -WO3 /TiO2 and Fe-zeolite catalysts analyzing the standard NH3 -SCR of NO for the abatement of NOx from vehicle exhausts showed transient effects at low temperatures related to the inhibiting action of excess ammonia. In order to describe such transient effects, a specific rate expression accounting for NH3 inhibition of the standard SCR reaction is needed in mathematical models of real SCR converters. We present herein a dual-site Mars-Ven Krevelen-type rate equation suitable to describe dynamic features associated with ammonia injection and shut-off over both V-based and Fe-zeolite catalysts.\",\"PeriodicalId\":19444,\"journal\":{\"name\":\"Oil & Gas Science and Technology-revue De L Institut Francais Du Petrole\",\"volume\":\"68 1\",\"pages\":\"681-691\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2011-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"20\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Oil & Gas Science and Technology-revue De L Institut Francais Du Petrole\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2516/OGST/2011132\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Oil & Gas Science and Technology-revue De L Institut Francais Du Petrole","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2516/OGST/2011132","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Kinetic Modeling of Dynamic Aspects of the Standard NH3-SCR Reaction Over V2O5-WO3/TiO2 and Fe-Zeolite Commercial Catalysts for the Aftertreatment of Diesel Engines Exhausts
Dynamic kinetic data collected over commercial V2 O5 -WO3 /TiO2 and Fe-zeolite catalysts analyzing the standard NH3 -SCR of NO for the abatement of NOx from vehicle exhausts showed transient effects at low temperatures related to the inhibiting action of excess ammonia. In order to describe such transient effects, a specific rate expression accounting for NH3 inhibition of the standard SCR reaction is needed in mathematical models of real SCR converters. We present herein a dual-site Mars-Ven Krevelen-type rate equation suitable to describe dynamic features associated with ammonia injection and shut-off over both V-based and Fe-zeolite catalysts.
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