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Selective synthesis of zeolite briquettes from conformed ashes
Author(s) -
GarcíaMartínez J,
CazorlaAmorós D,
LinaresSolano A
Publication year - 2002
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.565
Subject(s) - analcime , sodalite , zeolite , chemical engineering , materials science , yield (engineering) , homogeneous , hydrothermal synthesis , hydrothermal circulation , phase (matter) , mineralogy , transformation (genetics) , aluminosilicate , chemistry , metallurgy , organic chemistry , catalysis , physics , engineering , thermodynamics , biochemistry , gene
The present study is devoted to the transformation of conformed ashes to zeolites by hydrothermal synthesis. A wide range of experimental conditions was tested to prepare selectively zeolites with different structures. Four different zeolites were synthesised: Na‐P1, analcime, cancrinite and sodalite. Stabilisation of the cancrinite phase was achieved by modification of the silica/alumina ratio of the synthesis mixture. The transformation is not restricted to the external surface of the conformed ashes, on the contrary, different techniques have shown that a homogeneous transformation is produced and its yield does not decrease due to the use of a preconformed material. The main contribution of the proposed method is that the final zeolitic material is already compacted and does not require any conformation step or the use of a binder. © 2002 Society of Chemical Industry