Abstract:
PROBLEM TO BE SOLVED: To obtain the subject compound with high selectivity and at high yield without using much catalyst by reacting an oxirane with CO and H2 in the presence of a catalyst i.e., a transition metal modified with a specified ligand. SOLUTION: This compound is (E) a β-hydroxyaldehyde and is obtained by reacting (B) a 1,2-oxirane with (C) carbon monoxide and (D) hydrogen in the presence of (A) a transition metal modified with a phosphorus-oxygen-ligand or nitrogen-oxygen-ligand and working as a catalyst. A cobolt-carbonyl-catalyst combined with phosphine oxide is preferably used as the component A and the ratio of oxygen based on phosphorus in the phosphine oxide is preferably 0.5-2.0. High yield is expectable thereby without using any accelerant.
Abstract:
The invention relates to reaction tubes provided with catalyst coated inserts whose main faces are inclined at an angle equal to or less than 10° with respect to the longitudinal axis of a reaction tube, wherein said reaction tubes enable to attain an improved yield for a hydrogen cyanide production according to a BMA process without increased sooting in the reaction tubes.
Abstract:
The invention relates to an improvement to the BMA process for the production of hydrogen cyanide from methane and ammonia in the presence of a platinum-containing catalyst. The problem of sooting, and thus the decrease in activity, of the catalysts can be reduced, or the activity increased, in that the catalyst is doped with an element from the series Cu, Ag, Au, Pd and W. The doping is preferably in the range of 0.01 to 20 mole % doping element, based on Pt.
Abstract:
The invention relates to an improvement to the BMA process for the production of hydrogen cyanide from methane and ammonia in the presence of a platinum-containing catalyst. The problem of sooting, and thus the decrease in activity, of the catalysts can be reduced, or the activity increased, in that the catalyst is doped with an element from the series Cu, Ag, Au, Pd and W. The doping is preferably in the range of 0.01 to 20 mole % doping element, based on Pt.
Abstract:
Proceso para la producción de cianuro de hidrógeno por el denominado proceso BMA, en el cual un hidrocarburo alifático que tiene 1 a 4 átomos C se hace reaccionar con amoníaco en presencia de un catalizador que contiene platino a 1000 hasta 1350ºC y se separa cianuro de hidrógeno del gas de reacción formado, caracterizado porque el platino del catalizador está impurificado con oro.
Abstract:
The invention relates to an improvement to the BMA process for the production of hydrogen cyanide from methane and ammonia in the presence of a platinum-containing catalyst. The problem of sooting, and thus the decrease in activity, of the catalysts can be reduced, or the activity increased, in that the catalyst is doped with an element from the series Cu, Ag, Au, Pd and W. The doping is preferably in the range of 0.01 to 20 mole % doping element, based on Pt.
Abstract:
The invention relates to an improvement to the BMA process for the production of hydrogen cyanide from methane and ammonia in the presence of a platinum-containing catalyst. The problem of sooting, and thus the decrease in activity, of the catalysts can be reduced, or the activity increased, in that the catalyst is doped with an element from the series Cu, Ag, Au, Pd and W. The doping is preferably in the range of 0.01 to 20 mole % doping element, based on Pt.