Highly Selective Silica‐supported Copper Catalysts Derived from Copper Phyllosilicates in the Hydrogenation of Adipic Acid to 1, 6‐hexanediol. Issue 23 (26th November 2018)

• Record Type: Journal Article
• Authors: Jiang, Jia‐Wei; Tu, Cheng‐Chieh; Chen, Chao‐Huang; Lin, Yu‐Chuan
• Is Part Of: ChemCatChem. Volume 10:Issue 23(2018)
• Page Start: 5449
• Page End: 5458
• Publication Date: 2018-11-26
• Subjects: adipic acid -- copper -- 1, 6-hexanediol -- hydrogenation -- phyllosilicate; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201801580
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: Hydrogenation of adipic acid (AA) is a potential way to prepare 1, 6‐hexanediol (HDOL). Herein, silica‐supported copper catalysts derived from copper phyllosilicates were synthesized, characterized, and tested in the hydrogenation of AA to HDOL. In a full conversion of AA, a high yield of HDOL (approximately 90 %) was obtained through the use of each Cu‐based catalyst. The turnover frequency calculated according to the consumption rate of AA was discovered to be dependent on the Cu + /(Cu 0 +Cu + ) ratio and the reduction condition. Moreover, recycling tests showed that a catalyst derived from a copper phyllosilicate had better stability compared with Cu/SiO2 made through impregnation due to a stronger interaction between Cu and silica. The kinetic analyses based on the global rate expression and Langmuir−Hinshelwood−Hougen−Watson (LHHW) formalism of AA conversion were conducted. The possible competitive adsorption between AA and its derivatives, including hydroxycaproic acid and ϵ‐caprolactone, was thereby revealed. Abstract : Deeply dipic about your copper catalysts : Silica‐supported copper catalysts derived from copper phyllosilicates are selective and stable in the hydrogenation of adipic acid to 1, 6‐hexanediol