Title: Gamma-zeolite contained middle distillate type hydrocracking catalyst and its preparation
Application Number: 98114458 Application Date: 1998.11.13
Publication Number: 1253860 Publication Date: 2000.05.24
Approval Pub. Date: Granted Pub. Date: 2002.11.13
International Classifi-cation: B01J29/12
Applicant(s) Name: China Petro-Chemical Corp. Address: 100029
Inventor(s) Name: Chen Song, Li Tingyu
Attorney & Agent: li wei
Abstract:
     The present invention relates to a hydrocracking catalyst for production of middle fraction, and is characterized by that it uses a modified superhydrophobic Y zeolite as acid cracking component, and the mole ratio of SiO2/Al2O3 of said Y zeolite is 5.0-25, crystal cell constant is 2.420-2.440 nm, specific area is 600-850 sq.m/g, Na2O content is less than 0.2%, secondary pore greater than 2.0 nm is above 40%, non-skeletal aluminium is 10-50% of total aluminium quantity, infrared acidity is 0.20-0.60 mmol/g and under the condition of 25 deg.c and P/Po 0.1 its water adsorption quantity is less than 5%. Said catalyst possesses excellent middle oil selectivity and activity when it is used for hydrocracking treatment of heavy hydrocarbon material.
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