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Synthesis of zeolite beta using silica gel as a source of SiO 2
Author(s) -
Bhat Ramanath N.,
Kumar Rajiv
Publication year - 1990
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280480407
Subject(s) - zeolite , crystallinity , yield (engineering) , adsorption , materials science , alkalinity , hexane , phase (matter) , differential thermal analysis , silica gel , chemical engineering , analytical chemistry (journal) , chemistry , catalysis , chromatography , organic chemistry , composite material , physics , diffraction , optics , engineering
The feasibility of synthesising pure zeolite beta in high yields using silica gel as the source of SiO 2 is demonstrated. The phase‐purity and yield of beta is enhanced by using silica gels with high surface area. The influence of various synthesis parameters (Si/Al ratio, alkalinity, dilution level, concentration of the organic base, etc.) on the kinetics of synthesis as well as the quality and yield of the zeolite have been investigated. A correlation between XRD crystallinity of the samples with varying degrees of crystallinity and that estimated from framework IR spectroscopy, differential thermal analysis and adsorption of n‐hexane is demonstrated. The dependence of the yield of zeolite beta on SiO 2 /Al 2 O 3 ratio of the gel is also reported. The results of the present study indicate the feasibility of a cheaper route for the manufacture of zeolite beta.