In producing maleic anhydride by catalytic oxidation of n- butane in vapor phase using oxygen or enriched air as oxidation medium, the reaction mixture consists of butane, oxygen and a recycling exhaust gas recovered from the absorption stage by a solvent of the maleic anhydride produced in the ...
the solid particle reactor in which n-butane in the reaction zone by the use of an oxidized form of the vanadium / phosphorus oxide catalysts (V / P / O) is converted to maleic anhydride, reduced vanadium / phosphorus oxide catalyst in the regenerator for regeneration by contact with oxygen...
The catalytic performance of (VO) P O , which is the industrial catalyst for the oxidation of n-butane to maleic anhydride, was studied in relation to the preparation methods of the catalyst and the reaction conditions when using the catalyst. It was shown that the difference in the preparati...
and completed the localization of key equipment of maleic anhydride. The oxidation reaction capacity of a single set of n-butane process can reach 50 thousand tons/year; The Distillation and absorption capacity can reach 200,000 tons/year; Bohua Engineering maleic anhydride technology has formed a...
Manufacture of maleic anhydride from butane Maleic anhydride is produced by the reaction of n-butane with a molecular oxygen-containing gas at an elevated temperature in the presence of a catalyst composed of the combined oxides of the elements antimony, molybdenum and at least on... RK Grasselli...
production methodthe main production methods of maleic anhydride are benzene oxidation, butene oxidation and n-butane oxidation, but benzene oxidation is still the main method. 1. Benzene oxidation process Benzene undergoes oxidation reaction in a fixed bed under the action of a V-Mo-P-based catal...
N-Maleyl derivatives of proteins are obtained at alkaline pH by reaction with maleic anhydride. The acylated product is cleaved at pH < 5, regenerating the protein. The half-life (τ) of ϵ-N-maleyl lysine is 11 h at pH 3.5 and 37 °C. More rapid cleavage is observed with the 2...
Maleic anhydride is a potent dienophile in Diels-Alder reactions. It is also a ligand for low-valent metal complexes, examples being Pt(PPh3)2(MA) and Fe(CO)4(MA). Maleic anhydride dimerizes in a photochemical reaction to form cyclo butane tetra carboxylic dianhydride (CBTA). This compound...
Maleic anhydride production A process for producing maleic anhydride from n-butane which comprises:(a) feeding n-butane and air to a reactor;< P>(b) contacting the butane and air with a catalyst comprising vanadium and phosphorus oxides at reaction conditions inclu... Stephen G. Paradis,David...
Disclosed is a process for the production of maleic anhydride, which comprises: reacting a hydrocarbon with an oxygen-containing gas in the presence of a catalyst; recove