Esterification of palmitic acid with methanol over tungsten oxide supported on zirconia solid acid catalysts: effect of method of preparation of the catalyst on its structural stability and reactivity ☆
作者： Sridarala Ramu , N. Lingaiah , B.L.A. Prabhavathi Devi , R.B.N. Prasad , I. Suryanarayana
DOI: 10.1016/J.APCATA.2004.08.002
关键词: Catalysis 、 Saturated fatty acid 、 Calcination 、 Cubic zirconia 、 Inorganic chemistry 、 Tungsten 、 Tetragonal crystal system 、 Nuclear chemistry 、 Chemistry 、 Heterogeneous catalysis 、 Methanol
摘要: Abstract Esterification of palmitic acid with methanol was studied on zirconia supported tungsten oxide solid catalysts prepared by both impregnation and co-precipitation methods; the loading calcination temperature were varied. These characterized X-ray diffraction for structural elucidation temperature-programmed desorption ammonia their surface acidity. Whereas impregnated exhibited tetragonal monoclinic phases zirconia, at temperatures beyond 500 °C co-precipitated analogues showed stability towards phase. The formation crystalline decreased esterification activity, as a consequence Coexistence amorphous offered maximum activity.
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