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Yang Y.,Hunan Normal University | Yang Y.,Chenzhou Gao Xin Material Co. | Liu X.,Hunan Normal University | Yin D.,Hunan Normal University | And 3 more authors.
Journal of Industrial and Engineering Chemistry | Year: 2015

A recyclable Pd colloidal catalyst was found to be effective for the liquid phase hydrogenation of α-pinene. Under optimal conditions, α-pinene conversion of 99.4% and cis-pinane selectivity of 81.3% were obtained. Furthermore, the Pd colloidal catalyst could be recovered conveniently and reused for eight runs without significant loss of the catalytic activity and selectivity. © 2014 The Korean Society of Industrial and Engineering Chemistry.

Liu X.,Hunan Normal University | Zhang Z.,South-Central University for Nationalities | Yang Y.,Chenzhou Gao Xin Material Co. | Yin D.,Hunan Normal University | And 3 more authors.
Chemical Engineering Journal | Year: 2015

Hydrogenation of citral was studied over activated carbon supported Pd nanoparticles (Pd/C catalyst) under atmospheric pressure. Pd/C catalysts were prepared using glucose as a stabilizer and characterized by several techniques such as ultraviolet-visible absorption spectroscopy (UV-Vis), transmission electron microscopy (TEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). 1wt.% Pd/C catalyst showed high catalytic activity for the hydrogenation of citral to 3,7-dimethyloctanal with high selectivity. A study on the optimization of the reaction conditions such as the reaction temperature and reaction solvent has been performed. Under optimal experimental conditions, citral conversion of 100% and 3,7-dimethyloctanal selectivity of 96% were obtained after 4h at 303K under atmospheric H2 pressure. © 2014 Elsevier B.V.

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