Title of article
EXAFS study of Cu/C catalysts
Author/Authors
Kriventsov، نويسنده , , V.V. and Klimov، نويسنده , , O.V. and Kikhtyanin، نويسنده , , O.V. and Ione، نويسنده , , K.G. and Kochubey، نويسنده , , D.I.، نويسنده ,
Pages
5
From page
318
To page
322
Abstract
A local arrangement of copper in Cu/C catalysts for dimethylcarbonate synthesis was studied by EXAFS. The samples with various Cu content were prepared by impregnating of carbon carrier “Sibunit” with the alcohol solution of CuCl2. It was determined, that the oxygen atoms from surface groups of carrier always enter into copper surrounding and the relative content of oxygen drops with the increase of Cu content in the samples. The structure of surface copper compounds for initial catalysts was proposed. Thus, samples with low Cu content (9×10−4 mol/g-cat) possess surface compounds [carrier-COO–CuCl] or [carrier–CO–CuCl], further, by increasing copper content a second surface layer consisting of hydrated CuCl2 non-bounded with carrier is formed.
Keywords
Heterogeneous catalysis , EXAFS , Surface groups , Synchrotron radiation
Journal title
Astroparticle Physics
Record number
2012414
Link To Document