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Chemistry and Industry of Forest Products ›› 2016, Vol. 36 ›› Issue (6): 56-62.doi: 10.3969/j.issn.0253-2417.2016.06.009

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Preparation and Catalytic Activity of[Rh(COD)Cl]2 Catalyst for Turpentine Hydrogenation

WANG Hong-qin, WANG Ya-ming, JIANG Li-hong, JIN Yan-qiong   

  1. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China
  • Received:2015-12-04 Online:2016-12-25 Published:2016-12-23

Abstract: Precious metal catalyst[Rh(COD)Cl]2 was prepared by stirring and reflux at a constant temperature. The preparing conditions were optimized by orthogonal experiments. The suitable conditions were obtained as molar ratio of COD and RhCl3·3H2O 3.5:1, reflux temperature 80℃ and reflux time 3 h. Catalyst[Rh(COD)Cl]2 was used in the hydrogenation of turpentine, and the reaction conditions such as pressure, temperature, quantity of catalyst, reaction time were investigated to get the optimum reaction parameters. The suitable conditions of hydrogenation reaction were reaction pressure 2.5 MPa, reaction temperature 45℃, reaction time 4 h and catalyst dosage 2.5% (based on the mass of turpentine). Under the optimized reaction conditions, the conversion rate of α-pinene was 98.21%, the selectivity of cis-pinane was 97.46% and the yield of cis-pinane was over 95.72%.

Key words: turpentine, catalytic hydrogenation, cis-pinane, [Rh(COD)Cl]2 catalysts

CLC Number: