Modified Y-type molecular sieve, catalytic cracking catalyst comprising the same, their preparation and application thereof

US11517887B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC · CN

Inventors

• Lingping Zhou · Beijing, CN
• Hao Sha · Beijing, CN
• Mingde Xu · Beijing, CN
• Weilin Zhang · Nanhu, CN
• Shuai Yuan · Chongqing, CN
• Zhenyu Chen · Beijing, CN
• Qiuqiao Jiang · Beijing, CN
• Huiping Tian · Beijing, CN

Key dates

• Filing date: Aug 15, 2019
• Grant date: Dec 6, 2022
• Expiry date: Aug 15, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A modified Y-type molecular sieve has a rare earth content of about 4% to about 11% by weight on the basis of the oxide, a phosphorus content of about 0.05% to about 10% by weight on the basis of P2O5, a sodium content of no more than about 0.5% by weight on the basis of sodium oxide, and an active element content of about 0.1% to about 5% by weight on the basis of the oxide, with the active element being gallium and/or boron. The modified Y-type molecular sieve has a total pore volume of about 0.36 mL/g to about 0.48 mL/g, a percentage of the pore volume of secondary pores having a pore size of 2-100 nm of about 20% to about 40%; a lattice constant of about 2.440 nm to about 2.455 nm, and a lattice collapse temperature of not lower than about 1060° C.