caa a22 4500 477080804 CHVBK 20180405111449.0 cr unu---uuuuu 170330e19960801xx s 000 0 eng 10.1007/BF02113863 doi (NATIONALLICENCE)springer-10.1007/BF02113863 Thermal stability and catalytic properties of the Wells-Dawson K6P2W18O62·10H2O heteropoly compound in the oxidative dehydrogenation of isobutane to isobutene [Elektronische Daten] [Clara Comuzzi, Alessandra Primavera, Alessandro Trovarelli, Gianluca Bini, Fabrizio Cavani] The thermal stability of the Wells-Dawson heteropoly compound K6P2W18O62·10H2 was examined under both reducing and oxidizing conditions, and its structural and morphological evolution was characterized by several complementary solid state techniques. It is shown that the primary structure of this compound remains intact up to 770 K, while at higher temperature structural changes and rearrangements are observed. These modifications depend considerably on the treatment conditions and catalyst composition. Under oxidizing conditions the Wells-Dawson compound rearranges with formation of a mixed phase containing the Keggin-type unit K3PW12O40 and the hexatungstate K2W6O19. Furthermore, the catalytic activity in the oxidation of isobutane is affected considerably by these changes. The best catalytic performance was shown by the rearranged Wells-Dawson compound. J.C. Baltzer AG, Science Publishers, 1996 Wells-Dawson heteropoly compound nationallicence Keggin heteropoly compound nationallicence oxidative dehydrogenation of isobutane nationallicence isobutane synthesis nationallicence Comuzzi Clara Dipartimento di Scienzee Tecnologie Chimiche, Via Cotonificio 108, 33100, Udine, Italy aut Primavera Alessandra Dipartimento di Scienzee Tecnologie Chimiche, Via Cotonificio 108, 33100, Udine, Italy aut Trovarelli Alessandro Dipartimento di Scienzee Tecnologie Chimiche, Via Cotonificio 108, 33100, Udine, Italy aut Bini Gianluca Dipartimento di Chimica Industriale e dei Materiali, Viale Risorgimento 4, 40136, Bologna, Italy aut Cavani Fabrizio Dipartimento di Chimica Industriale e dei Materiali, Viale Risorgimento 4, 40136, Bologna, Italy aut Topics in Catalysis Baltzer Science Publishers, Baarn/Kluwer Academic Publishers 3/3-4(1996-08-01), 387-406 1022-5528 3:3-4<387 1996 3 11244 https://doi.org/10.1007/BF02113863 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02113863 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Comuzzi Clara Dipartimento di Scienzee Tecnologie Chimiche, Via Cotonificio 108, 33100, Udine, Italy aut NATIONALLICENCE 700 1- Primavera Alessandra Dipartimento di Scienzee Tecnologie Chimiche, Via Cotonificio 108, 33100, Udine, Italy aut NATIONALLICENCE 700 1- Trovarelli Alessandro Dipartimento di Scienzee Tecnologie Chimiche, Via Cotonificio 108, 33100, Udine, Italy aut NATIONALLICENCE 700 1- Bini Gianluca Dipartimento di Chimica Industriale e dei Materiali, Viale Risorgimento 4, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Cavani Fabrizio Dipartimento di Chimica Industriale e dei Materiali, Viale Risorgimento 4, 40136, Bologna, Italy aut NATIONALLICENCE 773 0- Topics in Catalysis Baltzer Science Publishers, Baarn/Kluwer Academic Publishers 3/3-4(1996-08-01), 387-406 1022-5528 3:3-4<387 1996 3 11244 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer