| 摘要 |
<p>A catalyst for gas-phase oxidations which comprises an inert support and a catalytically active composition comprising transition metal oxides applied thereto, or a precatalyst, is described. The (pre)catalyst is obtained by treating the inert support with an aqueous suspension or solution of the transition metal oxides or their precursor compounds, where the suspension contains a binder dispersion and the binder is a copolymer of an alpha-olefin and a vinyl-C<SUB>2</SUB>-C<SUB>4</SUB>-carboxylate whose vinyl C<SUB>2</SUB>-C<SUB>4</SUB>-carboxylate content is at least 62 mol %.</p> |
