Hydrocracking catalyst containing mesoporous-microporous molecular sieve and preparation method of catalyst
The technology of microporous molecular sieve and mesoporous molecular sieve is applied in the field of hydrocracking catalyst and its preparation, which can solve the problem of low quality of tail oil, and achieve the effects of low BMCI value, high activity and high selectivity of tail oil.
Active Publication Date: 2013-09-11
PETROCHINA CO LTD
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The invention relates to a preparation method of a hydrocracking catalyst containing a mesoporous-microporous molecular sieve. The hydrocracking catalyst comprises hydrogenation active metal, the mesoporous-microporous molecular sieve, aluminium oxide and amorphous silicon aluminum. The preparation method of the mesoporous-microporous molecular sieve comprises the steps of synthesizing a Y zeolite precursor by taking a common silicon source and aluminium source as raw materials, and adding a template agent to the precursor for assembling to obtain the molecular sieve with a mesoporous-microporous structure. The mesoporous-microporous molecular sieve has the properties of having the specific surface of 400-600 m<2>/g, the total pore volume of 0.6-1.0 ml/g, the relative crystallinity of 90%-110%, the crystal cell parameter of 11.5nm-14.0nm, the silica-alumina ratio of 30-100, the infrared acid content of 0.2-0.8 mmol/g and the sodium oxide content of less than or equal to 0.05wt%. The hydrocracking catalyst prepared by the method has the characteristics of being high in activity, good in selectivity of target products, high in production and quality of tail oil, etc.
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Property | Measurement | Unit |
Pore volume | 1.2 | ml/g |
Specific surface | 267.8 | m²/g |
Specific surface | 4.0 | m²/g |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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