Cu-based catalyst, its preparation process and use thereof

US11260374B2 · kind B2 · utility

Assignees

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

Inventors

• Kai Qiao · Zhoushan City, CN
• Feng Zhou · Shanghai, CN
• Jie Su · New York, US
• Huixia MA · 东风镇, CN
• Qingtong Zhai · 东风镇, CN
• Shumei Zhang · 东风镇, CN

Key dates

• Filing date: Nov 14, 2018
• Grant date: Mar 1, 2022
• Expiry date: Nov 14, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a Cu-based catalyst, a preparation process thereof and its use as the dehydrogenation catalyst in producing a hydroxyketone compound such as acetoin. Said Cu-based catalyst contains copper, at least one auxiliary metal selected from metal of Group IIA, non-noble metal of Group VIII, metal of Group VIB, metal of Group VIIB, metal of Group IIB and lanthanide metal of periodic table of elements, and an alkali metal, and further contains at least one ketone additive selected from a ketone represented by formula (II) and a ketone represented by formula (II′). Said Cu-based catalyst shows a high the acetoin selectivity as the dehydrogenation catalyst for producing acetoin. R1-C(═O)—CH(OH)—R2  (II)R1-C(═O)—CH(═O)—R2  (II′)In formulae (II) and (II′), each group is defined as in the description.