Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2011, Vol. 32 ›› Issue (4): 643-646.DOI: 10.3724/SP.J.1088.2011.01225

• Research papers • Previous Articles     Next Articles

Hydrogenation of α-Pinene over Ruthenium Chloride Promoted by Water

YANG Xiao1, LIU Shiwei1, XIE Congxia2,*, YU Shitao1, LIU Fusheng1   

  1. 1College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China; 2College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
  • Received:2010-12-17 Revised:2011-01-25 Online:2011-04-18 Published:2014-08-30

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Abstract: The water improved hydrogenation of α-pinene was investigated in the presence of ruthenium chloride. The results showed that water significantly promoted the hydrogenation. Compared with the traditional catalysts or RuCl3, the selectivity for product pinane and the molar ratio of cis-/trans-pinane were significantly improved. Under the optimum conditions of 1.8 mg RuCl3·3H2O, 2.5 g α-pinene, m(H2O):m(α-pinene) = 4:1, 5 MPa H2, reaction temperature 160 oC, and reaction time 5 h, the conversion of α-pinene reached 99.7%, the selectivity for cis-pinane was 96.3%, and the molar ratio of cis-/trans-pinane was more than 28. Otherwise, the isolated catalyst phase could be used five times without any treatment, and its catalytic activity was unchanged.

Key words: α-pinene, pinane, hydrogenation, ruthenium chloride, promoted by water