Patent
Process for preparing hydrogen cyanide
TLDR
A process for preparing hydrogen cyanide which comprises reacting methanol or formaldehyde or their mixture, ammonia and oxygen in the presence of a catalyst composition at a temperature of 250* to 550*C and a space velocity of 50 to 5,000 hr 1 under a pressure of 0.5 to 10 atm is described in this article, where the said catalyst composition comprising a catalyst system of the formula: MoaBibFecXdYeZfOg wherein X is one or more of Cr, Mn, Co, Ni, Zn, CdAbstract:
A process for preparing hydrogen cyanide which comprises reacting methanol or formaldehyde or their mixture, ammonia and oxygen in the presence of a catalyst composition at a temperature of 250* to 550*C and a space velocity of 50 to 5,000 hr 1 under a pressure of 0.5 to 10 atm., the said catalyst composition comprising a catalyst system of the formula: MoaBibFecXdYeZfOg wherein X is one or more of Cr, Mn, Co, Ni, Zn, Cd, Sn, W and Pb, Y is one or more of Tl and elements belonging to Group IA or IIA in the periodic table, Z is one or more of P, As and Sb and a, b, c, d, e, f and g represent respectively the number of atoms and are respectively 12, 0.1 to 24, 0 to 24, 0 to 15, 0 to 15, 0 to 5 and the total number of the oxygen atoms in the oxides of the other atoms.read more
Citations
More filters
Patent
A process for reduction of waste material during manufacture of acrylonitrile
TL;DR: In this paper, a process for reducing the amount of waste material generated during the manufacture of acrylonitrile is described, which involves introducing an additional amount of oxygen containing gas, preferably air, in the substantial absence of any oxygenate compounds, into the upper portion of the fluid bed reactor to react with at least some of the unreacted ammonia.
Patent
Ammoxidation of methanol to produce hydrogen cyanide
TL;DR: Promoted bismuth rare earth molybdenum oxide complexes are excellent catalysts for the ammoxidation of methanol to HCN especially at high methanoline throughputs at contact times appropriate for fluid-bed operation as discussed by the authors.
Patent
Production of unsaturated nitriles
TL;DR: In this article, it was shown that a given time when manganese, antimony, thorium, zirconium, yttrium, or mixtures thereof are incorporated into the catalyst, they can give a large volume of acrylonitrile or methacrylnitrile.
Patent
Process and catalyst for propylene ammoxidation to acrylonitrile
TL;DR: Olefins such as propylene and isobutylene are converted to the corresponding unsaturated nitriles, acrylonitrile, and methacrylnitrile by reacting a mixture of the olefin, ammonia, and molecular oxygen-containing gas in the presence of a catalyst containing the oxides of molybdenum, bismuth, iron, cobalt, nickel, and chromium, and either phosphorus or antimony or mixtures thereof.
Patent
Catalyst for propylene ammoxidation to acrylonitrile
TL;DR: Olefins such as propylene and isobutylene are converted to the corresponding unsaturated nitriles, acrylonitrile, and methacrylnitrile by reacting a mixture of the olefin, ammonia, and molecular oxygen-containing gas in the presence of a catalyst containing the oxides of molybdenum, bismuth, iron, cobalt, nickel, and chromium, and either phosphorus or antimony or mixtures thereof as mentioned in this paper.
References
More filters
Patent
Production of hydrocyanic acid
TL;DR: In this paper, the authors described a process for the production of hydrocyanic acid, which comprises passing a gaseous mixture containing a mixture of acid and hydrogen atoms, and then passing the mixture through a filter.
Patent
Manufacture of hydrogen cyanide
TL;DR: In this paper, the molybdenum oxide was used with phosphoric acid to produce hydrogen cyanide in the form of 1/8 inch pellets of a 20 per cent.