Plasma hydrogen cyanide from

Production of Hydrogen Cyanide from Methane in a Nitrogen Plasma Jet... 

The production of hydrogen cyanide from methane and nitrogen can be presented as process (9-16) assuming a = 2. Plasma-chemical HCN production is an endothermic process ... 

Quantitative assays have shown that the plasma of nonsmoking, healthy adults contains MeCbl (250 pg cm ), AdoCbl, and hydroxocobalamin (OH-Cbl) [AdoCbl + OH-Cbl (125 pg cm with AdoCbl > OH-Cbl)]. The blood of smokers contains CN-Cbl ( 2% of total cobalamin), which is derived from hydrogen cyanide in tobacco smoke. CN-Cbl can also develop from the consumption of foods (e.g., cassava) that release cyanide ions. In erythrocytes, the chief cobalamin is AdoCbl (> 50% of total cobalamin) followed by OH-Cbl (25%), MeCbl (10-15%), and small amounts of CN-Cbl. Cobalamin-dependent enzymatic reactions in animals and microorganisms (see below) involve AdoCbl and MeCbl and the reduced form of OH-Cbl, cob(I)alamin, whereas CN-Cbl has no established role. 

Consumable cathodes have been used in experiments in which carbon was one of the reactants. Carbon, vaporized from a graphite cathode, was used in the synthesis of cyanogen and hydrogen cyanide. Powdered carbon introduced in a gas stream or as a constituent of a gas has also been used as the source of carbon in a plasma flame. 

Co-Production of Hydrogen Cyanide (HCN) and Acetylene (C2H2) from Methane and Nitrogen in Thermal Plasma Systems... 

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