Premium
The effects of alkali metal(Na + ,K + ) on the exchange degree of H β zeolite and the catalytic properties of the alkalized zeolites
Author(s) -
Shen JianPing,
Ma Jun,
Sun Tie,
Jiang DaZhen,
Min EnZe
Publication year - 1995
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19950130206
Subject(s) - zeolite , chemistry , alkali metal , isomerization , catalysis , inorganic chemistry , ion exchange , metal , degree (music) , base (topology) , organic chemistry , ion , mathematical analysis , mathematics , physics , acoustics
The effects of alkali metals (Na + ,K + ) on the exchange degree of Hβ zeolite under different conditions and the conversion of α (or β )‐methylnaphthalene over the alkalized zeolites were studied. The results showed that the H + of H β zeolite is totally replaced by the Na + of NaCl solution, while partially exchanged by the K + of KCl solution, there is an exchange equilibrium between the H + and K + for H β zeolite (Si/Al=17.23) and the value of equilibrium is 88.39. The exchange degree also increases with increasing the Si/Al of the samples. It was suggested that these results are attributed to the electrostatic field in the pore of Hβ zeolite and the nature of zeolite and the properties of alkali metal. The isomerization of α (or β )‐methylnaphthalene is the main reaction over the samples and it is more favour on the proper acid‐base sites of KH β zeolite.