Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Jürgen Felsche"'
Autor:
Jürgen Felsche, Michael Wiebcke
Publikováno v:
Microporous and Mesoporous Materials. 43:289-297
A reinvestigation of the crystal structure of the tetraethylammonium silicate hydrate with the approximate chemical composition (C8H20N)6[Si6O15] · 40.8H2O (1) is reported. The crystal structure of tetraethylammonium hydroxide nonahydrate, (C8H20N)O
Autor:
Stefanie Eiden-Aßmann, Günter Engelhardt, Peter Behrens, Michael Wiebcke, Andreas M. Schneider, Jürgen Felsche
Publikováno v:
Chemistry - A European Journal. 6:292-297
Ion exchange of the sodium hydro sodalites [Na3(H2O)4]2-[Al3Si3O12]2 [Na4(H3O2)]2[Al3Si3O12]2 and [Na4(OH)]2[Al3Si3O12]2 with aqueous Pb(NO3)2 solutions yielded, whichever reactant sodalite phase was used, the same lead hydro sodalite, [Pb2(OH)-(H2O)
Publikováno v:
Journal of Applied Crystallography. 32:345-350
Dialogues for the estimation of crystallite size, shape and lattice strain are designed and included in an X-ray powder diffraction (XRPD) program, namedAXES. They implement peak fitting and Voigt analysis followed by a Williamson–Hall plot (WHP).
Publikováno v:
Solid State Ionics. :1273-1277
This study deals with host-guest interactions in clathrasils. Silica sodalites with enclosed ethyleneglycol (EG), ethanolamine (EA) and ethylenediamine (ED), respectively, were chosen as a basic model system. The inclusion of the stereochemically sim
Publikováno v:
Materials Science Forum. :89-94
Autor:
Carola M. Braunbarth, Gerhard Wildermuth, Gianpietro van de Goor, Peter Behrens, Günter Engelhardt, Jürgen Felsche
Publikováno v:
Zeolites. 16:207-217
Two new clathrasils with sodalite structure were obtained using ethanolamine (EA) and ethylenediamine (ED), respectively, as structure-directing agents that also serve as solvents during the synthesis. Crystallization in the systems SiO 2 -Na 2 O-EA
Publikováno v:
Microporous Materials. 4:149-158
The phenyltrimethylammonium and benzyltrimethylammonium silicate hydrates with the approximate chemical compositions [NPhMe 3 ] 6 [Si 8 O 18 (OH) 2 ]·38.7H 2 O ( 1 ) and [NBnMe 3 ] 8 [Si 8 O 20 ]·53.6H 2 O (Ph=phenyl, Me=methyl, Bn=benzyl) ( 2 ) ha
Publikováno v:
Zeitschrift f�r anorganische und allgemeine Chemie. 621:301-310
The local structure in crystals, melts, supercooled melts, and glasses of sodium silicate hydrates of composition Na2O · SiO2 · nH2O (n = 9, 6, 5) is studied by variable temperature 1H, 23Na, and 29Si MAS NMR spectroscopy. Detailed in situ investig
Publikováno v:
Journal of Solid State Chemistry. 115:55-65
The phase transition behavior of anhydrous silver sodalite (ASS) Ag3[Al 3 Si 3 O 12 ] differs from that of other compounds with a sodalite structure in that the transition detected T c = 678 K by differential scanning calorimetry does not involve the
Publikováno v:
Microporous Materials. 2:493-500
A clathrasil with SOD structure has been obtained using 1,3-dioxolane as a template. The synthesis was achieved under hydrothermal conditions at temperatures between 423 and 433 K in the SiO 2 Na 2 OC 3 H 6 O 2 H 2 O system. The choice of th