A series of catalysts containing 5-25 wt% 12-tungstophosphoric acid supported on hydrous zirconia were prepared and their catalytic activity evaluated for the esterification of palmitic acid with methanol. These catalysts were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, surface area (BET method), and potentiometric titration for the estimation of acidity. The catalyst with 20 wt% TPA calcined at 300 A degrees C exhibited the highest activity. The effects of reaction variables such as catalyst loading, methanol to acid molar ratio and reaction temperature were studied. The pseudo-homogeneous (PH), Eley-Rideal (ER) and Langmuir-Hinshelwood-Hougen-Watson (LHHW) kinetic models were applied to correlate the experimental kinetic data and kinetic parameters were evaluated. The LHHW model gave the best fit.
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UNIV WATERLOO,GUELPH WATERLOO CTR GRAD WORK CHEM,DEPT CHEM,WATERLOO N2L 3G1,ONTARIO,CANADAUNIV WATERLOO,GUELPH WATERLOO CTR GRAD WORK CHEM,DEPT CHEM,WATERLOO N2L 3G1,ONTARIO,CANADA
HAYASHI, H
MOFFAT, JB
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UNIV WATERLOO,GUELPH WATERLOO CTR GRAD WORK CHEM,DEPT CHEM,WATERLOO N2L 3G1,ONTARIO,CANADAUNIV WATERLOO,GUELPH WATERLOO CTR GRAD WORK CHEM,DEPT CHEM,WATERLOO N2L 3G1,ONTARIO,CANADA
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E China Univ Sci & Technol, Inst Pesticides & Pharmaceut, Shanghai 200237, Peoples R ChinaE China Univ Sci & Technol, Inst Pesticides & Pharmaceut, Shanghai 200237, Peoples R China
Peng, YQ
Song, GH
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E China Univ Sci & Technol, Inst Pesticides & Pharmaceut, Shanghai 200237, Peoples R ChinaE China Univ Sci & Technol, Inst Pesticides & Pharmaceut, Shanghai 200237, Peoples R China
Song, GH
Qian, XH
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E China Univ Sci & Technol, Inst Pesticides & Pharmaceut, Shanghai 200237, Peoples R ChinaE China Univ Sci & Technol, Inst Pesticides & Pharmaceut, Shanghai 200237, Peoples R China