{"title":"Pt/介孔-二氧化硅催化剂上贫氮氧化物的优异HC-SCR性能","authors":"T. Komatsu, K. Tomokuni, M. Konishi, T. Shirai","doi":"10.2174/1876214X01003010024","DOIUrl":null,"url":null,"abstract":"Perfect de-NOx over a wide temperature range above 170 °C was achieved using a new Pt-catalyst supported on mesoporous silica (Pt/MPS) and a stoichiometric amounts of long-chain hydrocarbons as reducing agents for NOx- purification. Kinetic investigation of the HC-SCR of lean NOx over Pt/MPS, Pt/alumina and Pt/zirconia showed that such a remarkable activity of Pt/MPS is due to a large frequency factor but not to activation energy. Acid-treatment of the supports increased the activities of the catalysts and generated new IR-peaks in the range 1000-1200 cm -1 , which suggests the support-effects on the catalyst-activities to be related to the special surface functional groups of the supports. The present HC-SCR must be very useful to remove diesel-NOx by means of pulse-injection of diesel fuel into the exhaust.","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"251 1","pages":"24-29"},"PeriodicalIF":0.0000,"publicationDate":"2010-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Outstanding HC-SCR of Lean NOx Over Pt/Mesoporous-Silica Catalysts~!2009-08-30~!2009-10-27~!2010-03-10~!\",\"authors\":\"T. Komatsu, K. Tomokuni, M. Konishi, T. Shirai\",\"doi\":\"10.2174/1876214X01003010024\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Perfect de-NOx over a wide temperature range above 170 °C was achieved using a new Pt-catalyst supported on mesoporous silica (Pt/MPS) and a stoichiometric amounts of long-chain hydrocarbons as reducing agents for NOx- purification. Kinetic investigation of the HC-SCR of lean NOx over Pt/MPS, Pt/alumina and Pt/zirconia showed that such a remarkable activity of Pt/MPS is due to a large frequency factor but not to activation energy. Acid-treatment of the supports increased the activities of the catalysts and generated new IR-peaks in the range 1000-1200 cm -1 , which suggests the support-effects on the catalyst-activities to be related to the special surface functional groups of the supports. The present HC-SCR must be very useful to remove diesel-NOx by means of pulse-injection of diesel fuel into the exhaust.\",\"PeriodicalId\":22755,\"journal\":{\"name\":\"The Open Catalysis Journal\",\"volume\":\"251 1\",\"pages\":\"24-29\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-03-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Open Catalysis Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2174/1876214X01003010024\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Open Catalysis Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2174/1876214X01003010024","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
摘要
使用介孔二氧化硅(Pt/MPS)负载的新型Pt-催化剂和一定量的长链烃作为NOx-净化的还原剂，在170°C以上的宽温度范围内实现了完美的脱硝。对Pt/MPS、Pt/氧化铝和Pt/氧化锆上贫NOx的HC-SCR动力学研究表明，Pt/MPS如此显著的活性是由于较大的频率因子而不是活化能。酸处理后催化剂活性增加，在1000 ~ 1200 cm -1范围内产生新的红外峰，表明载体对催化剂活性的影响可能与载体表面特殊的官能团有关。目前的HC-SCR必须是非常有用的去除柴油氮氧化物通过脉冲喷射柴油燃料到排气。
Outstanding HC-SCR of Lean NOx Over Pt/Mesoporous-Silica Catalysts~!2009-08-30~!2009-10-27~!2010-03-10~!
Perfect de-NOx over a wide temperature range above 170 °C was achieved using a new Pt-catalyst supported on mesoporous silica (Pt/MPS) and a stoichiometric amounts of long-chain hydrocarbons as reducing agents for NOx- purification. Kinetic investigation of the HC-SCR of lean NOx over Pt/MPS, Pt/alumina and Pt/zirconia showed that such a remarkable activity of Pt/MPS is due to a large frequency factor but not to activation energy. Acid-treatment of the supports increased the activities of the catalysts and generated new IR-peaks in the range 1000-1200 cm -1 , which suggests the support-effects on the catalyst-activities to be related to the special surface functional groups of the supports. The present HC-SCR must be very useful to remove diesel-NOx by means of pulse-injection of diesel fuel into the exhaust.
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