期刊
ACS CATALYSIS
卷 9, 期 4, 页码 2940-2948出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.8b04925
关键词
acidity generation; surface modification; palladium and iodine; reductive etherification; biomass upgrading
资金
- Solvay
- Lille University
- National Natural Science Foundation of China [91745105]
Selective synthesis of ethers from biomass derived carbonyl compounds is an important academic and industrial challenge. The existing processes based on strong acid or metallic catalysts cannot provide high selectivity to ethers due to the occurrence of side reactions. Hereby we propose a Pd-I bifunctional heterogeneous catalyst for the selective reductive etherification of aldehydes with alcohols. Extensive catalyst characterizations uncovered the presence of iodine species on the surface of Pd nanoparticles. Heterolytic dissociation of hydrogen on the I-Pd surface sites leads to the in situ generation of a Bronsted acid, which promotes the reaction toward the corresponding ethers with extremely high selectivity under very mild reaction conditions.
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