Pseudo-boehmite, manufacturing process and application thereof

US12421128B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC CORP. · CN

Inventors

• Huihong Zhu · 东风镇, CN
• Tao Yang · Taizhou City, CN
• Tiebin Liu · 东风镇, CN
• Hao Jin · Shanghai, CN
• Guang Yang · Nanhu, CN
• Lu Liu · 东风镇, CN
• Zhenhui Lv · 东风镇, CN
• Xiangchen Fang · Fushun, CN

Key dates

• Filing date: Dec 27, 2019
• Grant date: Sep 23, 2025
• Expiry date: Mar 20, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/90
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A pseudo-boehmite has a dry basis content of 55-85 wt % and contains a phosphoric acid ester group. The sodium oxide content is not greater than 0.5 wt %, and the phosphorus content (in terms of phosphorus pentoxide) is 1.2-5.7 wt %, relative to 100 wt % of the total weight of the pseudo-boehmite. The pseudo-boehmite has a low sodium content.