Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Jürgen Felsche"'
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:
ChemInform. 26
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:
J. Chem. Soc., Chem. Commun.. :1604-1606
The mixed silicate–water host framework, 3∞[{[Si8O18(OH)2]6–}2[H2O]97], of the title compound contains unprecedented and remarkable structural features, e.g. pseudo-hexagonal layer-like subunits with large circular apertures (free diameter ca.
Publikováno v:
J. Chem. Soc., Chem. Commun.. :371-372
A combined solid- and liquid-state 29Si NMR study shows that the monomeric silicate anions of crystalline sodium silicate hydrates Na2H2SiO4·nH2O (n= 8,4) upon melting undergo rapid condensation to distinct oligomer species, and that recrystallizati