Institute of New Catalytic Material Science, College of Chemistry, Nankai University, Tianjin 300071, China; 2.Key Laboratory of Catalysis Technology, CNOOC Tianjin Chemical Research & Design Institute, Tianjin 300131, China
The effect of HF treatment on etherification activities of ZSM-5 zeolite was investigated. Appearance, crystal structure, pore structure, acid quality of treated zeolite was charactered. It was found that catalyst treated by HF remained typical MFI structure, but grain broken; pore volume and average pore diameter of treated zeolite increased obviously; Bronsted acid quantity decreased; etherification activities of fluorinate treatment of ZSM-5 zeolite increased obviously.