Zeolite molecular sieve Ω is a crystalline synthetic nitrogen-containing aluminosilicate zeolite(1-5)The acid, steam and heat stabilities of the zeolite Ω have been found to be quite high. The pores of Ω zeolite ha...Zeolite molecular sieve Ω is a crystalline synthetic nitrogen-containing aluminosilicate zeolite(1-5)The acid, steam and heat stabilities of the zeolite Ω have been found to be quite high. The pores of Ω zeolite have a diameter of about 11, as demonstrated by the adsorption of substantial quantites of (C4F9)sN. The composition of zeolite Ω can be expressed stoichiometrically in terms of moles of oxides as follows [xR2O+yM2/nO].Al2O3·zSiO2·aH2O, wherein R represents hydrogen, ammonium, alkylammonium or their mixtures, M represents metal ions, n is the valence of M; x:展开更多
文摘Zeolite molecular sieve Ω is a crystalline synthetic nitrogen-containing aluminosilicate zeolite(1-5)The acid, steam and heat stabilities of the zeolite Ω have been found to be quite high. The pores of Ω zeolite have a diameter of about 11, as demonstrated by the adsorption of substantial quantites of (C4F9)sN. The composition of zeolite Ω can be expressed stoichiometrically in terms of moles of oxides as follows [xR2O+yM2/nO].Al2O3·zSiO2·aH2O, wherein R represents hydrogen, ammonium, alkylammonium or their mixtures, M represents metal ions, n is the valence of M; x: