{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T00:42:22Z","timestamp":1792629742977,"version":"4.5.0"},"publisher-location":"400 Commonwealth Drive, Warrendale, PA, United States","reference-count":9,"publisher":"SAE International","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>&lt;div class=\"htmlview paragraph\"&gt;Several different possibilities will be described and discussed on the processes of reducing NOx in lean-burn gasoline and diesel engines.&lt;\/div&gt;\n&lt;div class=\"htmlview paragraph\"&gt;In-company studies were conducted on zeolitic catalysts. With lean-burn spark-ignition engines, hydrocarbons in the exhaust gas act as a reducing agent. In stationary conditions at \u03bb = 1.2, NOx conversion rates of approx. 45 % were achieved.&lt;\/div&gt;\n&lt;div class=\"htmlview paragraph\"&gt;With diesel engines, the only promising variant is SCR technology using urea as a reducing agent. The remaining problems are still the low space velocity and the narrow temperature window of the catalyst. The production of reaction products and secondary reactions of urea with other components in the diesel exhaust gas are still unclarified.&lt;\/div&gt;<\/jats:p>","DOI":"10.4271\/900496","type":"proceedings-article","created":{"date-parts":[[2010,10,15]],"date-time":"2010-10-15T16:05:49Z","timestamp":1287158749000},"source":"Crossref","is-referenced-by-count":187,"title":["Catalytic NOx Reduction in Net Oxidizing Exhaust Gas"],"prefix":"10.4271","volume":"1","author":[{"given":"Wolfgang","family":"Held","sequence":"first","affiliation":[{"name":"Volkswagen AG"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Axel","family":"K\u00f6nig","sequence":"additional","affiliation":[{"name":"Volkswagen AG"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Richter","sequence":"additional","affiliation":[{"name":"Volkswagen AG"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lothar","family":"Puppe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2796","published-online":{"date-parts":[[1990,2,1]]},"reference":[{"key":"ref0","unstructured":"US Pat 4.719.092"},{"key":"ref1","doi-asserted-by":"crossref","unstructured":"Perry   R.H. Siebers   D.L. Rapid reduction of nitrogen oxides in exhaust gas streams Nature 234 657 658 1986","DOI":"10.1038\/324657a0"},{"key":"ref2","doi-asserted-by":"crossref","unstructured":"Puppe   L. Zeolites - Properties and Practical Applications 20 4 117 127 1986","DOI":"10.1002\/ciuz.19860200404"},{"key":"ref3","unstructured":"US Pat 4.297.328"},{"key":"ref4","unstructured":"K\u00f6nig   A. Held   W. Richter   Th. Puppe   L. Catalytic reduction of nitrogen oxides for Diesel Engines VDI-Report Nr. 714 309 325 1988"},{"key":"ref5","doi-asserted-by":"crossref","unstructured":"Gra\u00df   H. 38 88 91 1988","DOI":"10.1177\/000313138803800139"},{"key":"ref6","doi-asserted-by":"crossref","unstructured":"Weisweiler   W. Retzlaff   B. Lim   Ch. T. 48 1988 119 126","DOI":"10.1177\/001316448804800114"},{"key":"ref7","doi-asserted-by":"crossref","unstructured":"Kiovsky   R.R. Koradia   P.B. Lim   Ch. T. Evaluation of a New Zeolitic Catalyst for Nox Reduction with NH 3 Ind. Eng. Chem. Prod. Res. Dev. 1980 19 218 225","DOI":"10.1021\/i360074a018"},{"key":"ref8","doi-asserted-by":"crossref","unstructured":"Lepperhoff   G. Schommers   J. 1988 1 17 21","DOI":"10.4271\/880003"}],"event":{"name":"International Congress & Exposition","location":"Detroit, Michigan, United States","acronym":"ANNUAL","number":"10496","start":{"date-parts":[[1990,2,26]]}},"container-title":["SAE Technical Paper Series"],"original-title":[],"link":[{"URL":"https:\/\/saemobilus.sae.org\/downloads\/papers\/900496\/Full%20Text%20PDF","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T16:01:28Z","timestamp":1759593688000},"score":1,"resource":{"primary":{"URL":"https:\/\/saemobilus.sae.org\/papers\/catalytic-nox-reduction-net-oxidizing-exhaust-gas-900496"}},"subtitle":[],"proceedings-subject":"SAE Technical Paper Series","short-title":[],"issued":{"date-parts":[[1990,2,1]]},"references-count":9,"URL":"https:\/\/doi.org\/10.4271\/900496","relation":{},"ISSN":["0148-7191","2688-3627"],"issn-type":[{"value":"0148-7191","type":"print"},{"value":"2688-3627","type":"electronic"}],"subject":[],"published":{"date-parts":[[1990,2,1]]},"article-number":"900496"}}