Kinetics Study for Hydrogenation of 2-Alkylanthraquinone to Hydrogen Peroxide
BAI Hongxin1,2, FANG Xiangchen1, LIU Quanjie1, JIA Liming1, PENG Chong1,3
1. Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116045, China;
2. School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
3. School of Sensing Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Abstract：In this work, the hydrogenation of 2-alkyl anthraquinone was investigated over Pd-based catalyst at 303.15-343.15 K and 0.15-0.35 MPa, and the power exponential kinetics was established by multiple linear regression analysis. The results showed that the activation energy of hydrogenation reaction increased (15.663, 18.715 and 19.347 kJ/mol respectively), the reaction order for H2 partial pressure increased and the reaction order and pre-exponential factor for anthraquinone concentration in the working solution decrease, with the increase of the steric hindrance effect of the side chain alkyl functional groups of 2-ethyl anthraquinone, 2-butyl anthraquinone and 2-pentyl anthraquinone. So, reaction rate for 2-ethylanthraquinone was shown to be 4.31 and 6.63 times as fast as that for 2-butylanthraquinone and 2-amylanthraquinone respectively within 50% hydrogenation conversion. Furthermore, volumetric mass transfer factor of H2 in the solvent of diamide derivatives was determined to be 0.162 s-1 under the industrial conditions of 328.15 K and 0.3 MPa, which was obviously better than that in the industrial commonly used solvents trioctyl phosphate (0.091 s-1) and trimethylbenzene (0.057 s-1).
BAI Hongxin,FANG Xiangchen,LIU Quanjie et al. Kinetics Study for Hydrogenation of 2-Alkylanthraquinone to Hydrogen Peroxide[J]. Chemical Reaction Engineering and Technology, 2022, 38(5): 453-460.
