caa a22 4500 475843622 CHVBK 20180406123907.0 cr unu---uuuuu 170329e20000401xx s 000 0 eng 10.1023/A:1027223208829 doi (NATIONALLICENCE)springer-10.1023/A:1027223208829 Vanadium-molybdenum phosphates supported by TiO2 for ethane oxidation to acetic acid: a correlation between the local environment of vanadium and the reactivity [Elektronische Daten] [M. Roy, H. Ponceblanc, J.C. Volta] Different complementary physicochemical tools have been used to explain the improvement of the catalytic performances for ethane oxidation into acetic acid induced by the addition of molybdenum as phosphate to vanadium phosphate deposited on TiO2-anatase, at a coverage below the monolayer. Electron microscopy techniques have shown that the elements are dispersed on the support. Electron spin resonance, laser Raman and UV-visible spectroscopies have evidenced that the short range order around vanadium is modified by the presence of molybdenum. 51V NMR has shown that molybdenum favours the octahedral symmetry of vanadium. The acidic properties of the catalyst are improved by the adding effect of molybdenum and by the addition of water. This should explain a better desorption of acetic acid and the improvement of the corresponding yield. This confirms the importance of the atomic environment of vanadium-based oxides to control the mild oxidation of light alkanes. Kluwer Academic Publishers, 2000 ethane nationallicence vanadium nationallicence molybdenum nationallicence phosphorus nationallicence titanium oxide nationallicence acetic acid nationallicence Roy M. Institut de Recherches sur la Catalyse - CNRS, 2 Avenue A. Einstein, 69626, Villeurbanne Cedex, France aut Ponceblanc H. Centre de Recherches d'Aubervilliers - Rhône-Poulenc, 52 rue de la Haie Coq, 93309, Aubervilliers Cedex, France aut Volta J.C. Institut de Recherches sur la Catalyse - CNRS, 2 Avenue A. Einstein, 69626, Villeurbanne Cedex, France aut Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 11-12/1-4(2000-04-01), 101-109 1022-5528 11-12:1-4<101 2000 11-12 11244 https://doi.org/10.1023/A:1027223208829 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1027223208829 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Roy M. Institut de Recherches sur la Catalyse - CNRS, 2 Avenue A. Einstein, 69626, Villeurbanne Cedex, France aut NATIONALLICENCE 700 1- Ponceblanc H. Centre de Recherches d'Aubervilliers - Rhône-Poulenc, 52 rue de la Haie Coq, 93309, Aubervilliers Cedex, France aut NATIONALLICENCE 700 1- Volta J.C. Institut de Recherches sur la Catalyse - CNRS, 2 Avenue A. Einstein, 69626, Villeurbanne Cedex, France aut NATIONALLICENCE 773 0- Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 11-12/1-4(2000-04-01), 101-109 1022-5528 11-12:1-4<101 2000 11-12 11244 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer