| 摘要 |
<p>Compositions of the empirical formula: Mo<Sub>12</Sub> Po.<Sub>1</Sub>-<Sub>3</Sub> M<Sub>0.1-3</Sub> Cu<Sub>0.1-2</Sub> V<Sub>0.1-2</Sub> X<Sub>0.1-2</Sub> Y<Sub>a</Sub> O<Sub>b</Sub> (1) where M is at least one of K, Rb and Cs;
<UnorderedLists id="ula01" listStyle="none"><ListItem>X is at least one of Ba, La, Ga, Al, Ag, Cd, Ti, TI, Hg, Pb and Zn;</ListItem><ListItem>Y is at least one of Fe, Co, Ni, Sr, Mn, In, Ta, Ge, S and Be when a > 0;</ListItem><ListItem>a is a number of 0 to about 2; and</ListItem><ListItem>b is a number that satisifies the valence requirements of the other elements present,</ListItem></UnorderedLists>are excellent catalysts for the oxidation of methacrolein to methacrylic acid.</p> |
