caa a22 4500 469060220 CHVBK 20180323132854.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF01029659 doi (NATIONALLICENCE)springer-10.1007/BF01029659 Synthesis of a gallosilicate analogue of high silica, large Port Mordenitel [Elektronische Daten] [M. Eapen, K. Reddy, P. Joshi, V. Shiralkar] A high silica (SiO2/Ga2O3 = 42) crystalline mordenite containing gallium (III) in framework positions has been prepared by hydrothermal crystallization at 413 K in the presence of tetraethylammonium bromide. Evidence for the presence of framework gallium in the mordenite lattice is obtained from chemical analysis, XRD, framework IR, solid state MASNMR, thermoanalytical studies, sorption and catalytic activity studies. Chemical analysis and NMR data indicate the absence of significant amounts of aluminium (SiO2/Al2O3 > 2400). An increase in the interplanar spacing and unit cell volume as well as a shift to lower wavenumbers of framework vibrations occurs on gallium incorporation in the mordenite lattice. Ga-mordenite exhibited significant ion exchange capacity. The gallium analogue of mordenite exhibited significant catalytic activity and shape selectivity in the isomerization reaction ofm-xylene. Kluwer Academic Publishers, 1992 Large port mordenite nationallicence gallium silicates nationallicence isomorphous substitution by Ga nationallicence Eapen M. Catalysis Group, National Chemical Laboratory, 411 008, Pune, India aut Reddy K. Catalysis Group, National Chemical Laboratory, 411 008, Pune, India aut Joshi P. Catalysis Group, National Chemical Laboratory, 411 008, Pune, India aut Shiralkar V. Catalysis Group, National Chemical Laboratory, 411 008, Pune, India aut Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 14/2(1992-06-01), 119-129 0923-0750 14:2<119 1992 14 10847 https://doi.org/10.1007/BF01029659 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01029659 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Eapen M. Catalysis Group, National Chemical Laboratory, 411 008, Pune, India aut NATIONALLICENCE 700 1- Reddy K. Catalysis Group, National Chemical Laboratory, 411 008, Pune, India aut NATIONALLICENCE 700 1- Joshi P. Catalysis Group, National Chemical Laboratory, 411 008, Pune, India aut NATIONALLICENCE 700 1- Shiralkar V. Catalysis Group, National Chemical Laboratory, 411 008, Pune, India aut NATIONALLICENCE 773 0- Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 14/2(1992-06-01), 119-129 0923-0750 14:2<119 1992 14 10847 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer