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The rate of photodecomposition increases toward an asymptotic limit as the O<jats:sub>2<\/jats:sub> partial pressure is increased. Deuterochloroform does not decompose under the same experimental conditions. Low concentrations of both cyclohexane and ethanol quench the photodecomposition, whereas water, up to its solubility limit, does not. Dissolved tetraalkylammonium salts suppress photodecomposition. The data are consistent with a mechanism in which light absorption by an SiO<jats:sub>2<\/jats:sub> defect yields an electron\u2010deficient oxygen atom, which then abstracts hydrogen from chloroform. The resulting <jats:styled-content style=\"fixed-case\">CC<\/jats:styled-content>l<jats:sub>3<\/jats:sub> radicals react with oxygen to form a peroxy radical that decomposes, eventually yielding phosgene and hydrogen chloride.<\/jats:p>","DOI":"10.1111\/php.12245","type":"journal-article","created":{"date-parts":[[2014,1,25]],"date-time":"2014-01-25T00:15:38Z","timestamp":1390608938000},"page":"760-766","source":"Crossref","is-referenced-by-count":6,"title":["Photodecomposition of Chloroform Catalyzed by Unmodified <scp>MCM<\/scp>\u201041 Mesoporous Silica"],"prefix":"10.1111","volume":"90","author":[{"given":"Laura A.","family":"Pe\u00f1a","sequence":"first","affiliation":[{"name":"Department of Chemistry Santa Clara University Santa Clara CA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alissa M.","family":"Chan","sequence":"additional","affiliation":[{"name":"Department of Chemistry Santa Clara University Santa Clara CA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Larissa R.","family":"Cohen","sequence":"additional","affiliation":[{"name":"Department of Chemistry Santa Clara University Santa Clara CA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karen","family":"Hou","sequence":"additional","affiliation":[{"name":"Department of Chemistry Santa Clara University Santa Clara CA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brent M.","family":"Harvey","sequence":"additional","affiliation":[{"name":"Department of Chemistry Santa Clara University Santa Clara CA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patrick E.","family":"Hoggard","sequence":"additional","affiliation":[{"name":"Department of Chemistry Santa Clara University Santa Clara CA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,2,15]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1521-4125(199910)22:10<807::AID-CEAT807>3.0.CO;2-4"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/jccs.199900067"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0167-2991(98)80991-9"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1387-1811(01)00334-1"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1142\/9781860946561_0021"},{"key":"e_1_2_6_7_1","first-page":"277","volume-title":"Asymmetric Synthesis with Chemical and Biological Methods","author":"Crosman A.","year":"2007"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cattod.2006.01.013"},{"key":"e_1_2_6_9_1","first-page":"99","article-title":"Technology of advanced immobilized single site catalysts","volume":"9","author":"Woo S. 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