Questioning klinowski's concept of isomorphous substitution of silicon by aluminium in the framework of silicates | Zendy

Lutz W. | Zendy; Grossmann A. | Zendy; Bülow M. | Zendy; Gross Th. | Zendy

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Questioning klinowski's concept of isomorphous substitution of silicon by aluminium in the framework of silicates

Author(s) -

Lutz W.,

Grossmann A.,

Bülow M.,

Gross Th.

Publication year - 1990

Publication title -

crystal research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1521-4079

pISSN - 0232-1300

DOI - 10.1002/crat.2170250205

Subject(s) - aluminosilicate , aluminium , silicon , silicate , substitution (logic) , aluminate , materials science , transformation (genetics) , phase (matter) , chemical engineering , crystallography , inorganic chemistry , catalysis , chemistry , cement , metallurgy , organic chemistry , biochemistry , computer science , engineering , gene , programming language

Silicalite was treated in an alkaline solution of aluminate following Klinowski's instruction for ‘fine tuning’ of zeolitic catalysts. Instead of an isomorphous substitution of framework silicon by aluminium, a partial phase transformation of the silicate into an Al‐rich aluminosilicate gel was observed. A surface re‐alumination of residual crystals takes place.

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