TY - JOUR
T1 - Highly Selective Silica-supported Copper Catalysts Derived from Copper Phyllosilicates in the Hydrogenation of Adipic Acid to 1,6-hexanediol
AU - Jiang, Jia Wei
AU - Tu, Cheng Chieh
AU - Chen, Chao Huang
AU - Lin, Yu Chuan
N1 - Funding Information:
This study was supported by the Ministry of Science and Technology (Projects 106-2221-E-006-188-MY3 and 107-2218-E-155-001), the Ministry of Economic Affairs (Project H354DP2120), and Taiwan's Deep Decarbonization Pathways toward a Sustainable Society (Project AS-KPQ-106-DDPP).
Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/12/7
Y1 - 2018/12/7
N2 - 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+/(Cu0+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.
AB - 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+/(Cu0+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.
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U2 - 10.1002/cctc.201801580
DO - 10.1002/cctc.201801580
M3 - Article
AN - SCOPUS:85057300208
SN - 1867-3880
VL - 10
SP - 5449
EP - 5458
JO - ChemCatChem
JF - ChemCatChem
IS - 23
ER -