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This article mainly worked on methods to reduce side reactions of the de-ethylating type catalyst for xylene isomerization. In laboratory the de-ethylating type catalyst for xylene isomerization was subjected to steam treatment at different temperatures and durations to achieve dealumination of the ZSM-5 zeolite to some extent, which could affect the change in Br0nsted acid content to decrease xylene loss along with reduction of side reactions. Test results showed that the degree for reducing side reactions by steam treatment depended upon two important parameters-treating temperature and duration. The optimal condition required treating the catalyst at 500 ℃ for 8 hours.
This article mainly worked on methods to reduce side reactions of the de-ethylating type catalyst for xylene isomerization. In the laboratory the de-ethylating type catalyst for xylene isomerization was subjected to steam treatment at different temperatures and durations to achieve dealumination of the ZSM-5 zeolite to some extent, which could affect the change in Br0nsted acid content to decrease xylene loss along with reduction of side reactions. The test results showed that the degree for reducing side reactions by steam treatment depended upon two important parameters- treating temperature and duration. optimal condition required treating the catalyst at 500 ℃ for 8 hours.