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A series of dealuminated HMCM-68 zeolites were prepared by treatment with steaming or hydrochloric/citric acid leaching. Their catalytic properties were studied using the alkylation of phenol with tert-butyl alcohol as a test reaction. The HMCM-68 zeolite modified by citric acid for 8 h (CAZ8) showed the best catalytic performance due to its improved structural and acidic properties, confirmed by...
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