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A new zeolite, LZ-276, was synthesized in an organic (TEAOH) system by varying the crystallization temperature in the procedure used by Jacobs and Martens for the synthesis of zeolite phi. LZ-276 (with SiO 2 /Al 2 O 3 =7.8) is more siliceous than phi. Another silicon-rich zeolite, LZ-277 (SiO 2 /Al 2 O 3 =6.6), was synthesized in a totally inorganic...
Aluminosilicate zeolite LZ-277 is synthesized hydrothermally from aqueous Na 2 O-Al 2 O 3 -SiO 2 gels in the absence of an organic templating agent. The as-synthesized LZ-277 has a chemical composition on an anhydrous basis expressed in terms of molar oxide ratios of (1.0 ± 0.1)Na 2 O:Al 2 O 3 :(3-16)SiO 2 and has a low adsorptive capacity...
The process comprises using a solution or dispersion of 1 of a fluoro salt of Cr and a fluoro salt of Sn at pH 3-7 to replace Al in microporous aluminosilicates by Cr and/or Sn to obtain a framework having the general formula (M w Al x Si y )O 2 (M = Sn and/or Cr; in a triangular diagram, w, x, y = 0.49, 0.01, and 0.50; 0.01, 0.49, and 0.98; and 0.01, 0.01, and 0...
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