Stereoselective hydrogenation of guaiacol to cis-2-methoxycyclohexanol using supported rhodium catalysts in supercritical carbon dioxide

被引：1
|
作者：
Yamaguchi, Aritomo [1 ]
Murakami, Yuka [1 ]
Yamazaki, Kiyoyuki [1 ]
Shirai, Masayuki [1 ,2 ]
Hiyoshi, Norihito [1 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Res Inst Chem Proc Technol, 4-2-1 Nigatake, Sendai 9838551, Japan
[2] Iwate Univ, Fac Sci & Engn, Dept Chem & Biol Sci, Chem Course, 4-3-5 Ueda, Morioka, Iwate 0208551, Japan
来源：
CATALYSIS TODAY | 2024年 / 425卷
基金：
日本学术振兴会;
关键词：
Supercritical carbon dioxide; Supported rhodium catalyst; Hydrogenation; Guaiacol; Stereoselectivity; HYDRODEOXYGENATION; LIGNIN; TRANSFORMATION; CONVERSION; BIOMASS; METALS;
D O I：
10.1016/j.cattod.2023.114356
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Selective hydrogenation of lignin-derived phenolic monomer to valuable chemicals has attracted attention and investigated well; however, stereoselective hydrogenation is required for practical applications, and is still challenging. In this study, we examined the stereoselective hydrogenation of guaiacol to cis-2-methoxycyclohexanol over supported metal catalysts in several solvents at mild reaction conditions. Rh/C in supercritical CO2 gave a higher proportion of cis-2-methoxycyclohexanol in total 2-methoxycyclohexanol compared to water solvent. Finally, guaiacol could be stereoselectively hydrogenated to cis-2-methoxycyclohexanol with the yield 83.9 % (total 2-methoxycyclohexanol yield was 95.5 %) even at 313 K for 1 h using the Rh/C catalyst in supercritical CO2 (CO2 25 MPa, H2 1.5 MPa).
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页数：6
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