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《Petrochemical Technology》 2011-01
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Kinetics of Dehydrogenation of 2-Butanol on Cu/ZnO/Al_2O_3 Catalyst

Fang Deren,Jiang Xuemei,Wang Zhiyuan,Qiu Zhaopeng,Zhang Huimin (Institute of Applied Catalysis of Yantai University,Yantai Shangdong 264005,China)  
Reaction kinetics for 2-butanol dehydrogenation on Cu/ZnO/Al_2O_3 catalyst was studied in a continuous flow fixed-bed reactor.The kinetics parameter fitting was carried out with the nonlinear least square method by means of SPSS statistical analysis software.The reaction mechanism was described by means of Langmuir-Hinshelwood mechanism and empirical model.The model parameters and the apparent activation energy of the dehydrogenation reaction were calculated.The results showed that 2-butanol dehydrogenation on the catalyst surface was the rate controlling step in the case of Langmuir-Hinshelwood mechanism as the reaction kinetics model and the apparent activation energy was 64.75 kJ/mol.But the apparent activation energy was 81.89 kJ/mol in the case of the empirical model.The errors of both the reaction rate equations were tested using correlation index(R~2) and Fcheck, and the results showed that the correlation index R~2 was close to 1 and F10F_αin both the cases.In addition,the error of the reaction rate equation based on Langmuir-Hinshelwood mechanism was less.
【CateGory Index】: TQ203.2
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