Process for the production of hydrogen cyanide
AssigneeW. R. Grace & Co.-Conn.
InventorsMartin B. Sherwin, Jow-Lih Su
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Abstract
A process for the production of hydrogen cyanide which comprises combining methanol ammoxidation with formamide decomposition in the same reactor, using a metal oxide catalyst. This process generally involves forming a gaseous reaction mixture comprising methanol, formamide, ammonia, oxygen and optionally formaldehyde. This reaction mixture is then passed over the metal oxide catalyst at a temperature in the range 200.degree. to 600.degree. and a pressure in the range 5 to 20 psig.
Claims18
A process for preparing hydrogen cyanide which comprises passing a gaseous reaction mixture of methanol, formamide, ammonia and oxygen under reactive conditions over a metal oxide catalyst.
A process for the preparation of hydrogen cyanide which comprises passing a gaseous reaction mixture of methanol, formamide, ammonia and oxygen over a ferric molybdate catalyst at a temperature in the range 310.degree. to 460.degree. C., wherein the molar ratio of methanol to formamide is in the range 1:(1-4), and the residence time of the reaction mixture on the catalyst is in the range 0.2 to 1.0 seconds.
A process for the preparation of hydrogen cyanide which comprises passing a gaseous reaction mixture of methanol or formaldehyde or a mixture thereof, formamide, ammonia and oxygen under reactive conditions over a metal oxide catalyst.
A process for the preparation of hydrogen cyanide which comprises passing a gaseous reaction mixture of methanol or formaldehyde or a mixture thereof, formamide, ammonia and oxygen over a ferric molybdate catalyst at a temperature in the range 310.degree. to 460.degree. C., wherein the molar ratios of methanol to formaldehyde to formamide is in the range (0 to 1):(0 to 1):(0.5 to 10), and the sum of the methanol and formaldehyde molar ratios totals 1, and the residence time of the reaction mixture on the catalyst is in the range 0.2 to 1.0 seconds.
Dependencies are inferred from the claim text.