Abstract:
High per pass conversions to acrylonitrile and acrylic acid or methacrylonitrile and methacrylic acid and desirable commercial flexibility are realized by reacting propylene or isobutylene with molecular oxygen and about 0.1 to about 0.9 moles of ammonia per mole of olefin in the presence of two catalysts. The first catalyst is an ammoxidation catalyst, and the second catalyst is an oxidation catalyst.
Abstract:
ACRYLIC ESTERS AND METHACRYLIC ESTERS ARE FORMED DIRECTLY FROM THE ALDEHYDE BY REACTING ACROLIEN OR METHACROLEIN WITH MOLECULAR OXYGEN AND AN ALCOHOL IN THE PRESENCE OF AN OXIDATION CATALYST UNDER THE CONDITIONS NORMALLY ASSOCIATED WITH THE REACTION OF THE ALDEHYDE TO THE ACID.
Abstract:
Very desirable oxidation catalysts are prepared by impregnating a catalytic oxide matrix containing at least cobalt and molybdenum, magnesium and molybdenum, nickel and mulybdenum, manganese and molybdenum with iron, bismuth, tellurium or a mixture thereof.
Abstract:
The present invention is catalysts that contain oxides or oxide complexes of at least tin, tungsten, vanadium and molybdenum. Optionally, the catalysts may also contain the oxides of iron, nickel, cobalt, zinc, manganese, magnesium or copper. These catalysts are very useful for the oxidation of acrolein to acrylic acid, the oxidation of butadiene to maleic anhydride and other oxidation reactions.
Abstract:
A process for the catalytic oxidation of olefins to unsaturated aldehydes and acids and the ammoxidation of olefins to unsaturated nitriles in which the catalyst comprises a promoted, reduced, antimony oxide-molybdenum oxide-containing catalyst.