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Synthesis and Characterization of P‐containing ZSM‐5 Zeolites
Author(s) -
Reschetilowski Wladimir,
Meier Brit,
Hunger Michael,
Unger Baldur,
Wendlandt KlausPeter
Publication year - 1991
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199106861
Subject(s) - propylamine , catalysis , crystallization , phosphoric acid , zsm 5 , chemistry , acid strength , brønsted–lowry acid–base theory , hydrothermal circulation , zeolite , characterization (materials science) , inorganic chemistry , aluminium , sulfate , proton , hydrothermal synthesis , solid acid , chemical engineering , organic chemistry , materials science , amine gas treating , nanotechnology , physics , quantum mechanics , engineering
The hydrothermal crystallization of a mixture of water glass and aluminum sulfate after addition of phosphoric acid and n ‐propylamine enables the preparation of ZSM‐5 zeolites with variable P content. When the P content is increased the distribution of acid strength of the acidic OH groups is shifted in favor of the weakly acidic Brønsted acidic centers. This is of fundamental importance for the preparation of tailor‐made catalysts for proton‐catalyzed reactions.