000212035 001__ 212035
000212035 005__ 20180317092640.0
000212035 0247_ $$2doi$$a10.1021/jacs.5b06134
000212035 022__ $$a0002-7863
000212035 02470 $$2ISI$$a000360321100043
000212035 037__ $$aARTICLE
000212035 245__ $$aAtomic Description of the Interface between Silica and Alumina in Aluminosilicates through Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy and First-Principles Calculations
000212035 260__ $$aWashington$$bAmerican Chemical Society$$c2015
000212035 269__ $$a2015
000212035 300__ $$a10
000212035 336__ $$aJournal Articles
000212035 520__ $$aDespite the widespread use of amorphous aluminosilicates (ASA) in various industrial catalysts, the nature of the interface between silica and alumina and the atomic structure of the catalytically active sites are still subject to debate. Here, by the use of dynamic nuclear polarization surface enhanced NMR spectroscopy (DNP SENS) and density functional theory (DFT) calculations, we show that on silica and alumina surfaces, molecular aluminum and silicon precursors are, respectively, preferentially grafted on sites that enable the formation of Al(IV) and Si(IV) interfacial sites. We also link the genesis of Bronsted acidity to the surface coverage of aluminum and silicon on silica and alumina, respectively.
000212035 700__ $$aValla, Maxence$$uETH, Dept Chem & Appl Biosci, Inorgan Chem Lab, CH-8093 Zurich, Switzerland
000212035 700__ $$0248569$$aRossini, Aaron J.$$g251584$$uETH, Dept Chem & Appl Biosci, Inorgan Chem Lab, CH-8093 Zurich, Switzerland
000212035 700__ $$aCaillot, Maxime$$uETH, Inst Chem & Bioengn, Dept Chem & Appl Biosci, CH-8093 Zurich, Switzerland
000212035 700__ $$aChizallet, Celine$$uIFP Energies Nouvelles, Rond Point Echangeur Solaize, F-69360 Solaize, France
000212035 700__ $$aRaybaud, Pascal$$uIFP Energies Nouvelles, Rond Point Echangeur Solaize, F-69360 Solaize, France
000212035 700__ $$aDigne, Mathieu$$uIFP Energies Nouvelles, Rond Point Echangeur Solaize, F-69360 Solaize, France
000212035 700__ $$aChaumonnot, Alexandra$$uIFP Energies Nouvelles, Rond Point Echangeur Solaize, F-69360 Solaize, France
000212035 700__ $$aLesage, Anne
000212035 700__ $$0248253$$aEmsley, Lyndon$$g251248$$uEcole Polytech Fed Lausanne, Inst Sci & Ingn Chim, CH-1015 Lausanne, Switzerland
000212035 700__ $$aVan Bokhoven, Jeroen A.
000212035 700__ $$aCoperet, Christophe$$uETH, Dept Chem & Appl Biosci, Inorgan Chem Lab, CH-8093 Zurich, Switzerland
000212035 773__ $$j137$$k33$$q10710-10719$$tJournal Of The American Chemical Society
000212035 909CO $$ooai:infoscience.tind.io:212035$$particle$$pSB
000212035 909C0 $$0252518$$pLRM$$xU12975
000212035 917Z8 $$x221596
000212035 937__ $$aEPFL-ARTICLE-212035
000212035 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000212035 980__ $$aARTICLE