| abstract |
Modified metal oxide catalysts, in particular Mo-V-Nb basedncatalysts, are disclosed. The processes for modifying the catalystsninclude treatment with a pyridine solution, refluxing in oxalic acid andnmethanol, and cryo-grinding. nThe utility of the modified catalysts in catalytic processes isndescribed.nAlkenes, unsaturated saturated carboxylic acids, saturated carboxylic acidsnand their higher analogues are prepared directly from corresponding alkanes,nalkenes or alkanes and alkenes utilizing using one or more modified metalnoxide catalysts. |