<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pham, A.L.-T.</style></author><author><style face="normal" font="default" size="100%">Lee, C.</style></author><author><style face="normal" font="default" size="100%">Doyle, F.M.</style></author><author><style face="normal" font="default" size="100%">Sedlak, D.L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A silica-supported iron oxide catalyst capable of activating hydrogen peroxide at neutral pH values</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Science &amp; Technology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Alumina</style></keyword><keyword><style  face="normal" font="default" size="100%">aluminum chloride</style></keyword><keyword><style  face="normal" font="default" size="100%">aluminum oxide</style></keyword><keyword><style  face="normal" font="default" size="100%">aqueous solution</style></keyword><keyword><style  face="normal" font="default" size="100%">Aqueous solutions</style></keyword><keyword><style  face="normal" font="default" size="100%">Article</style></keyword><keyword><style  face="normal" font="default" size="100%">catalysis</style></keyword><keyword><style  face="normal" font="default" size="100%">catalyst</style></keyword><keyword><style  face="normal" font="default" size="100%">Catalysts</style></keyword><keyword><style  face="normal" font="default" size="100%">Chemical</style></keyword><keyword><style  face="normal" font="default" size="100%">controlled study</style></keyword><keyword><style  face="normal" font="default" size="100%">decomposition</style></keyword><keyword><style  face="normal" font="default" size="100%">Electron</style></keyword><keyword><style  face="normal" font="default" size="100%">Ferric Compounds</style></keyword><keyword><style  face="normal" font="default" size="100%">Hydrogen peroxide</style></keyword><keyword><style  face="normal" font="default" size="100%">Hydrogen-Ion Concentration</style></keyword><keyword><style  face="normal" font="default" size="100%">Iron ores</style></keyword><keyword><style  face="normal" font="default" size="100%">iron oxide</style></keyword><keyword><style  face="normal" font="default" size="100%">Iron oxide catalyst</style></keyword><keyword><style  face="normal" font="default" size="100%">Iron oxides</style></keyword><keyword><style  face="normal" font="default" size="100%">Microscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">Mixed oxide</style></keyword><keyword><style  face="normal" font="default" size="100%">Models</style></keyword><keyword><style  face="normal" font="default" size="100%">Neutral pH</style></keyword><keyword><style  face="normal" font="default" size="100%">Oxidant production</style></keyword><keyword><style  face="normal" font="default" size="100%">Oxidants</style></keyword><keyword><style  face="normal" font="default" size="100%">Oxidation</style></keyword><keyword><style  face="normal" font="default" size="100%">oxidation reduction reaction</style></keyword><keyword><style  face="normal" font="default" size="100%">Oxidation-Reduction</style></keyword><keyword><style  face="normal" font="default" size="100%">Oxide minerals</style></keyword><keyword><style  face="normal" font="default" size="100%">oxidizing agent</style></keyword><keyword><style  face="normal" font="default" size="100%">pH</style></keyword><keyword><style  face="normal" font="default" size="100%">pH effects</style></keyword><keyword><style  face="normal" font="default" size="100%">pH measurement</style></keyword><keyword><style  face="normal" font="default" size="100%">pH value</style></keyword><keyword><style  face="normal" font="default" size="100%">phenol</style></keyword><keyword><style  face="normal" font="default" size="100%">Phenols</style></keyword><keyword><style  face="normal" font="default" size="100%">redox conditions</style></keyword><keyword><style  face="normal" font="default" size="100%">Scanning</style></keyword><keyword><style  face="normal" font="default" size="100%">Silica</style></keyword><keyword><style  face="normal" font="default" size="100%">Silica-alumina</style></keyword><keyword><style  face="normal" font="default" size="100%">silicon dioxide</style></keyword><keyword><style  face="normal" font="default" size="100%">Sol-gel process</style></keyword><keyword><style  face="normal" font="default" size="100%">Sol-Gel processing</style></keyword><keyword><style  face="normal" font="default" size="100%">stoichiometry</style></keyword><keyword><style  face="normal" font="default" size="100%">Strong oxidants</style></keyword><keyword><style  face="normal" font="default" size="100%">Surface Properties</style></keyword><keyword><style  face="normal" font="default" size="100%">Surface redox process</style></keyword><keyword><style  face="normal" font="default" size="100%">Tetra-ethyl-ortho-silicate</style></keyword><keyword><style  face="normal" font="default" size="100%">tetraethoxysilane</style></keyword><keyword><style  face="normal" font="default" size="100%">X-Ray Diffraction</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.scopus.com/inward/record.uri?eid=2-s2.0-72249112169&amp;doi=10.1021%2fes902296k&amp;partnerID=40&amp;md5=ee0448400897e1bc687218af328296c0</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">23</style></number><volume><style face="normal" font="default" size="100%">43</style></volume><pages><style face="normal" font="default" size="100%">8930-8935</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Iron oxides catalyze the conversion of hydrogen peroxide (H 2O2) into oxidants capable of transforming recalcitrant contaminants. Unfortunately, the process is relatively inefficient at circumneutral pH values because of competing reactions that decompose H 2O2 without producing oxidants. Silica- and alumina-containing iron oxides prepared by sol-gel processing of aqueous solutions containing Fe(ClO4)3, AlCl3, and tetraethyl orthosilicate efficiently catalyzed the decomposition of H 2O2 into oxidants capable of transforming phenol at circumneutral pH values. Relative to hematite, goethite, and amorphous FeOOH, the silica-iron oxide catalyst exhibited a stoichiometric efficiency, defined as the number of moles of phenol transformed per mole of H2O 2 consumed, which was 10-40 times higher than that of the iron oxides. The silica-alumina-iron oxide catalyst had a stoichiometric efficiency that was 50-80 times higher than that of the iron oxides. The significant enhancement in oxidant production is attributable to the interaction of Fe with Al and Si in the mixed oxides, which alters the surface redox processes, favoring the production of strong oxidants during H2O2 decomposition. © 2009 American Chemical Society.</style></abstract><notes><style face="normal" font="default" size="100%">cited By 203</style></notes></record></records></xml>