caa a22 4500 475843576 CHVBK 20180406123907.0 cr unu---uuuuu 170329e20000401xx s 000 0 eng 10.1023/A:1027213512038 doi (NATIONALLICENCE)springer-10.1023/A:1027213512038 Heterogenization of 12-tungstophosphoric acid on stabilized zeolite Y [Elektronische Daten] [Z. Olejniczak, B. Sulikowski, A. Kubacka, M. Gąsior] 12-tungstophosphoric acid (PW12) has been supported on dealuminated zeolite Y, containing a secondary pore system with the predominant pore radii of 15 Å. The interaction between the heteropolyacid and the zeolite matrix has been studied using 29Si, 27Al and 31P MAS NMR. Distribution of two types of the Keggin anions, strongly and weakly interacting with the support, has been estimated quantitatively. Increased acidic properties of the PW12/zeolite Y system were demonstrated by a change in the selectivity pattern of m-xylene transformations in the gas phase (significantly increased dealkylation and transalkylation paths at the expense of isomerization). Redox properties were evaluated in oxidation reactions with H2O2 in the liquid phase. It has been shown that the PW12/zeolite Y catalysts can selectively oxidize a number of organic compounds at relatively low temperatures. Kluwer Academic Publishers, 2000 12-tungstophosphoric acid nationallicence dealuminated faujasite nationallicence 31P MAS NMR nationallicence 29Si MAS NMR nationallicence 27Al MAS NMR nationallicence m -xylene transformation nationallicence liquid-phase oxidation nationallicence Olejniczak Z. Institute of Nuclear Physics, ul. Radzikowskiego 152, PL-31-342, Kraków, Poland aut Sulikowski B. Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 1, PL-30-239, Kraków, Poland aut Kubacka A. Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 1, PL-30-239, Kraków, Poland aut Gąsior M. Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 1, PL-30-239, Kraków, Poland aut Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 11-12/1-4(2000-04-01), 391-400 1022-5528 11-12:1-4<391 2000 11-12 11244 https://doi.org/10.1023/A:1027213512038 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1027213512038 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Olejniczak Z. Institute of Nuclear Physics, ul. Radzikowskiego 152, PL-31-342, Kraków, Poland aut NATIONALLICENCE 700 1- Sulikowski B. Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 1, PL-30-239, Kraków, Poland aut NATIONALLICENCE 700 1- Kubacka A. Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 1, PL-30-239, Kraków, Poland aut NATIONALLICENCE 700 1- Gąsior M. Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 1, PL-30-239, Kraków, Poland aut NATIONALLICENCE 773 0- Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 11-12/1-4(2000-04-01), 391-400 1022-5528 11-12:1-4<391 2000 11-12 11244 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer