Abstract:
THE INSTANT APPLICATION DEALS WITH A PROCESS FOR THE MANUFACTURE OF MONOOLEFINICALLY UNSATURATED ALIPHATIC NITRILES BY THE CATALYTIC OXIDATION OF OLEFIN USING CYANIDE AND A MOLECULAR OXYGEN-CONTAINING GAS, BUT NO AMMONIA.
Abstract:
Molybdenum-containing oxidation catalysts used in a fluid-bed reactor have been discovered to become partially deactivated through loss of molybdenum from the catalyst. These partially deactivated catalysts are regenerated in situ by the addition of fluid-bed particles consisting of an essentially inert support material containing molybdenum.
Abstract:
Catalysts containing at least nickel or cobalt, chromium, bismuth and molybdenum have been found to be especially useful for the ammoxidation of olefins, the oxidation of olefins and the oxidative dehydrogenation of olefins.
Abstract:
Olefinic acids and esters such as methacrylic acid and methylmethacrylate, are prepared by contacting in the presence of molecular oxygen the corresponding saturated acid or ester, such as isobutyric acid or methylisobutyrate with the catalyst of the empirical formula Mo12 P0.1-3 M0.1-3 CU0.01-2 V0.01-2 X0.01-2 M' a 0b (I) where M is at least one of K, Rb and Cs; X is at least one of Ba, La, Ca, Al, Ag, Cd, Ti, Tl, HB, Pb and Zn; M' is at least one of Fe, Co, Ni, Sr, Mn, In, Ta, Ge, S and Be when a > 0; a is a number of 0 to about 2; and b is a number that satisfies the valence requirements of the other elements present
Abstract:
PROCESS FOR THE PREPARATION OF UNSATURATED ACIDS FROM UNSATURATED ALDEHYDES Methacrylic acid or acrylic acid are produced by the oxidation of methacrolein or acrolein, respectively, with molecular oxygen in the vapor phase in the presence of a catalytic oxide of molybdenum, phosphorus, arsenic, oxygen and the following components delineated in Groups I to III: (I) a rare earth element or mixture thereof, and optionally, at least one of Ag, Tl, Rh, Pd, Ru, Pt, Cd, Al, Au, Cu, alkaline earth metal, Cl and NH4; or (II) at least one element selected from the group consisting of U, Ti, Nb, Re, Pb, Zn and Ga, and optionally, at least one of Cu, a rare earth element, Ag, Ta, In, Th, Cd, Tl, alkaline earth metal, NH4, Cl, Ni, Al, and Ge; or (III) at least one element selected from the group consisting of Ag, Rh, Ru and Au, and optionally, at least one of Cd, Pt, Tl, Pd, Al, Ge, Cu, Ni, alkaline earth metal, NH4 and Cl.
Abstract:
PROCESS FOR PRODUCING UNSATURATED ALIPHATIC ACIDS AND CATALYSTS THEREFORE The present invention relates to a process for the production of unsaturated aliphatic acids and the catalyst therefore by the vapor phase oxidation of the corresponding unsaturated aliphatic aldehydes with molecular oxygen, optionally in the presence of steam, in the presence of an oxidation catalyst consisting of the oxides of the elements molybdenum, antimony and vanadium in combination with at least one of the oxides of the element selected from the group consisting of silver, magnesium, thallium and cadmium, and optionally one or more of the oxides of the elements of the group, manganese, cobalt, nickel, copper, iron, tin, chromium, titanium, bismuth, arsenic, phosphorus, rhenium, and zinc.