NO sub x reduction by urea under lean conditions over single step sol-gel Pt/alumina catalyst

NO sub x reduction by urea under lean conditions over single step sol-gel Pt/alumina catalyst

We prepared 2% Pt on alumina catalyst using a single step sol-gel process (designated as 2% Pt-SG) and tested its activity for NO sub x reduction with aqueous urea solutions under oxidizing conditions. Our results show that approx =99% NO sub x conversion was obtained as low as 150 deg C but above 3...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Applied catalysis. B, Environmental Environmental, 2002-04, Vol.37 (1), p.27-35
Hauptverfasser: Seker, E, Yasyerli, N, Gulari, E, Lambert, C, Hammerle, R H
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 35
container_issue 1
container_start_page 27
container_title Applied catalysis. B, Environmental
container_volume 37
creator Seker, E
Yasyerli, N
Gulari, E
Lambert, C
Hammerle, R H
description We prepared 2% Pt on alumina catalyst using a single step sol-gel process (designated as 2% Pt-SG) and tested its activity for NO sub x reduction with aqueous urea solutions under oxidizing conditions. Our results show that approx =99% NO sub x conversion was obtained as low as 150 deg C but above 350 deg C, the conversion became negative because of the additional formation of NO and NO sub 2 from the oxidation of nitrogen-containing compounds. We also found that NO sub x conversion activity of 2% Pt-SG is strongly dependent on water content rather than on urea amount and the presence of 7% oxygen in the feed lowers the maximum NO sub x conversion temperature from 250 to 150 deg C. (Relevance to the reduction of NO sub x from diesel engine exhaust and power plant flue gas noted.)
format Article
fullrecord <record><control><sourceid>proquest</sourceid><recordid>TN_cdi_proquest_miscellaneous_27605393</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>27605393</sourcerecordid><originalsourceid>FETCH-proquest_miscellaneous_276053933</originalsourceid><addsrcrecordid>eNqNissKwjAQAHNQsD7-YU_eiqHB1p5F8aQevEpJ27VEtkntJmL_XgU_wNPAzIxEJPMkjZXK1ERMme9SykQlm0hcjyfgUMILeqxD5Y2zUA4QetQQbI09EGoLlbO1-UYG9_xINrYhBPbYATuKGyQ4-5Wm0BqrodJe08B-LsY3TYyLH2diud9dtoe4690jIPuiNVwhkbboAhdJlsq1ypX6e3wDImtGOg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>27605393</pqid></control><display><type>article</type><title>NO sub x reduction by urea under lean conditions over single step sol-gel Pt/alumina catalyst</title><source>Elsevier ScienceDirect Journals</source><creator>Seker, E ; Yasyerli, N ; Gulari, E ; Lambert, C ; Hammerle, R H</creator><creatorcontrib>Seker, E ; Yasyerli, N ; Gulari, E ; Lambert, C ; Hammerle, R H</creatorcontrib><description>We prepared 2% Pt on alumina catalyst using a single step sol-gel process (designated as 2% Pt-SG) and tested its activity for NO sub x reduction with aqueous urea solutions under oxidizing conditions. Our results show that approx =99% NO sub x conversion was obtained as low as 150 deg C but above 350 deg C, the conversion became negative because of the additional formation of NO and NO sub 2 from the oxidation of nitrogen-containing compounds. We also found that NO sub x conversion activity of 2% Pt-SG is strongly dependent on water content rather than on urea amount and the presence of 7% oxygen in the feed lowers the maximum NO sub x conversion temperature from 250 to 150 deg C. (Relevance to the reduction of NO sub x from diesel engine exhaust and power plant flue gas noted.)</description><identifier>ISSN: 0926-3373</identifier><language>eng</language><ispartof>Applied catalysis. B, Environmental, 2002-04, Vol.37 (1), p.27-35</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780</link.rule.ids></links><search><creatorcontrib>Seker, E</creatorcontrib><creatorcontrib>Yasyerli, N</creatorcontrib><creatorcontrib>Gulari, E</creatorcontrib><creatorcontrib>Lambert, C</creatorcontrib><creatorcontrib>Hammerle, R H</creatorcontrib><title>NO sub x reduction by urea under lean conditions over single step sol-gel Pt/alumina catalyst</title><title>Applied catalysis. B, Environmental</title><description>We prepared 2% Pt on alumina catalyst using a single step sol-gel process (designated as 2% Pt-SG) and tested its activity for NO sub x reduction with aqueous urea solutions under oxidizing conditions. Our results show that approx =99% NO sub x conversion was obtained as low as 150 deg C but above 350 deg C, the conversion became negative because of the additional formation of NO and NO sub 2 from the oxidation of nitrogen-containing compounds. We also found that NO sub x conversion activity of 2% Pt-SG is strongly dependent on water content rather than on urea amount and the presence of 7% oxygen in the feed lowers the maximum NO sub x conversion temperature from 250 to 150 deg C. (Relevance to the reduction of NO sub x from diesel engine exhaust and power plant flue gas noted.)</description><issn>0926-3373</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNqNissKwjAQAHNQsD7-YU_eiqHB1p5F8aQevEpJ27VEtkntJmL_XgU_wNPAzIxEJPMkjZXK1ERMme9SykQlm0hcjyfgUMILeqxD5Y2zUA4QetQQbI09EGoLlbO1-UYG9_xINrYhBPbYATuKGyQ4-5Wm0BqrodJe08B-LsY3TYyLH2diud9dtoe4690jIPuiNVwhkbboAhdJlsq1ypX6e3wDImtGOg</recordid><startdate>20020408</startdate><enddate>20020408</enddate><creator>Seker, E</creator><creator>Yasyerli, N</creator><creator>Gulari, E</creator><creator>Lambert, C</creator><creator>Hammerle, R H</creator><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20020408</creationdate><title>NO sub x reduction by urea under lean conditions over single step sol-gel Pt/alumina catalyst</title><author>Seker, E ; Yasyerli, N ; Gulari, E ; Lambert, C ; Hammerle, R H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_miscellaneous_276053933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Seker, E</creatorcontrib><creatorcontrib>Yasyerli, N</creatorcontrib><creatorcontrib>Gulari, E</creatorcontrib><creatorcontrib>Lambert, C</creatorcontrib><creatorcontrib>Hammerle, R H</creatorcontrib><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Applied catalysis. B, Environmental</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Seker, E</au><au>Yasyerli, N</au><au>Gulari, E</au><au>Lambert, C</au><au>Hammerle, R H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>NO sub x reduction by urea under lean conditions over single step sol-gel Pt/alumina catalyst</atitle><jtitle>Applied catalysis. B, Environmental</jtitle><date>2002-04-08</date><risdate>2002</risdate><volume>37</volume><issue>1</issue><spage>27</spage><epage>35</epage><pages>27-35</pages><issn>0926-3373</issn><abstract>We prepared 2% Pt on alumina catalyst using a single step sol-gel process (designated as 2% Pt-SG) and tested its activity for NO sub x reduction with aqueous urea solutions under oxidizing conditions. Our results show that approx =99% NO sub x conversion was obtained as low as 150 deg C but above 350 deg C, the conversion became negative because of the additional formation of NO and NO sub 2 from the oxidation of nitrogen-containing compounds. We also found that NO sub x conversion activity of 2% Pt-SG is strongly dependent on water content rather than on urea amount and the presence of 7% oxygen in the feed lowers the maximum NO sub x conversion temperature from 250 to 150 deg C. (Relevance to the reduction of NO sub x from diesel engine exhaust and power plant flue gas noted.)</abstract></addata></record>
fulltext fulltext
identifier ISSN: 0926-3373
ispartof Applied catalysis. B, Environmental, 2002-04, Vol.37 (1), p.27-35
issn 0926-3373
language eng
recordid cdi_proquest_miscellaneous_27605393
source Elsevier ScienceDirect Journals
title NO sub x reduction by urea under lean conditions over single step sol-gel Pt/alumina catalyst
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-05T04%3A34%3A19IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=NO%20sub%20x%20reduction%20by%20urea%20under%20lean%20conditions%20over%20single%20step%20sol-gel%20Pt/alumina%20catalyst&rft.jtitle=Applied%20catalysis.%20B,%20Environmental&rft.au=Seker,%20E&rft.date=2002-04-08&rft.volume=37&rft.issue=1&rft.spage=27&rft.epage=35&rft.pages=27-35&rft.issn=0926-3373&rft_id=info:doi/&rft_dat=%3Cproquest%3E27605393%3C/proquest%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=27605393&rft_id=info:pmid/&rfr_iscdi=true