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Received February 26, 2009
Accepted April 28, 2009
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Effect of water on Cu/Zn catalyst for hydrogenation of fatty methyl ester to fatty alcohol
UNILAB, State Key Lab of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China 1Shanghai Zhongyuan Chemical Company Ltd., Shanghai 200431, China
gpcao@ecust.edu.cn
Korean Journal of Chemical Engineering, November 2009, 26(6), 1574-1579(6), 10.1007/s11814-009-0267-7
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Abstract
The effect of water on Cu/Zn catalyst prepared by co-precipitation for hydrogenation of methyl laurate in a slurry phase was studied using a stirred autoclave reactor system. The catalysts were characterized by means of XRD, BET, H2-TPR, SEM and TEM. The results indicate that catalytic activity decreases with increased amount of water in methyl laurate. Correlating with the results from the above characterization, it is found that the main causes for the water deactivation of the Cu/Zn catalyst were the water occlusion of active catalyst sites by the low solubility of_x000D_
water in the substrate and the promotion of crystal growth, as well as the Cu/Zn catalyst agglomeration in the presence of water.
Keywords
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Hattori Y, Yamamoto K, Kaita J, Matsuda M, Yamada S, J. Am. Oil Chem. Soc., 77, 1283 (2000)
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van der Scheur FT, Sai G, Bliek UAA, Staal LH, J. Am. Oil Chem. Soc., 72, 1027 (1995)
Kim HJ, Jung H, Lee KY, Korean J. Chem. Eng., 18(6), 838 (2001)
Thakur DS, Roberts BD, White GT, Rieke RD, J. Am. Oil Chem. Soc., 76, 995 (1999)
Muttzall KMK, van der Berg PJ, Chemical reaction engineering, Pergamon Press, Oxford (1971)
Guan PB, Manufacture and application of fatty alcohol, China Light Industry Press, Beijing (1990)
Satterfield CN, Heterogeneous catalysis in industrial practice, McGraw-Hill, New York (1991)
Robertson SD, Mcnicol BD, Baas JHD, Kloet SC, J. Catal., 37, 424 (1975)
Shimokawabe M, Asakawa H, Takezawa N, Appl. Catal., 59, 45 (1990)
van der Grift CJG, Mulder A, Geus JW, Appl. Catal., A, 60, 81 (1990)
Parameswaran VR, Lee S, Wender I, Fuel Sci. Tech. Int., 7, 899 (1989)
Tartamella T, Lee SG, Fuel Sci. Technol. Int., 14(5), 713 (1996)
