期刊
CATALYSIS TODAY
卷 357, 期 -, 页码 511-517出版社
ELSEVIER
DOI: 10.1016/j.cattod.2019.06.071
关键词
Transfer hydrogenolysis; Lignin; Aromatic ethers; Heterogeneous catalysis; Palladium; Cobalt
资金
- Universita Mediterranea di Reggio Calabria (Italy)
- Photon Factory Program Advisory Committee of the Photon Factory of the Institute for Materials Structure Science, High Energy Accelerator Research Organization - KEK (Tsukuba, Japan) [2014000053]
The transfer hydrogenolysis of lignin derived aromatic ethers (benzyl phenyl ether, phenethyl phenyl ether and diphenyl ethers) have been investigated by using the coprecipitated Pd/Co as heterogeneous catalyst and 2propanol as H-donor/solvent. A quantitative conversion of benzyl phenyl ether into toluene and cyclohexanol was obtained after 180 min at 240 degrees C. The bimetallic Pd/Co catalyst is, by far, more efficient if compared to commercial Pd/C and Co-based catalytic systems showing, at the same time, a good reusability. The enhanced ability in the CeO bond cleavage in aromatic ethers is related to the formation of bimetallic Pd-Co ensembles, arisen from the preparation procedure adopted, as confirmed by a complete physico-chemical characterization that includes XRD, SEM, TEM, H-2-TPR, XPS and EXAFS analysis.
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