Amorphous silica-alumina, a carrier combination and a hydrocracking catalyst containing the same, and processes for the preparation thereof

US6399530B1 · kind B1 · utility

Assignees

• CHINA PETROCHEMICAL CORPORATION
• Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC CORP. · CN

Inventors

• Song Chen · Nanhu, CN
• Tingyu Li · Starkville, US
• Guangwei Cao · 东风镇, CN
• Minghua Guan · 东风镇, CN

Key dates

• Filing date: Nov 12, 1999
• Grant date: Jun 4, 2002
• Expiry date: Nov 12, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J35/647
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An acidic amorphous silica-amumina has a large specific surface area and a large pore volume. A carrier complex and a hydrotreating catalyst containing acidic amorphous silica-alumina, in particular a hydrocracking catalyst containing acidic amorphous silica-alumina in combination with a modified zeolite-Y, treats petroleum hydrocarbon materials to produce middle distillates. The amorphous silica-alumina has a SiO2 content of 10-50 wt. %, a specific surface area of 300-600 m2/g, a pore volume of 0.8-1.5 ml/g and an IR acidity of 0.25-0.60 mmol/g. The catalyst shows a relatively high activity and mid-distillate selectivity and can be particularly used in hydrocracking process for producing mid-distillates with a higher yield.