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US3932305A V-P-Zr Catalysts and method of preparation thereof in the absence of hydrogen halide 失效
V-P-Zr催化剂及其在不存在卤化氢的条件下的制备方法

V-P-Zr Catalysts and method of preparation thereof in the absence of
hydrogen halide
Abstract:
V-P-Zr catalysts having high activity and selectivity and good physical strength for the oxidation of alkanes, cycloalkanes and mixtures rich in them to dicarboxylic acid anhydrides (e.g. maleic anhydride) are prepared by reacting an aqueous mixture of vanadium pentoxide and a hydroxy-or oxo- alkanoic acid or formaldehyde, a zirconium salt, and phosphoric acid.
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