Reactions of Nitrous Acid. I. Ammonium Nitrite Decomposition¹

A novel in situ N2 generation system assisted by authigenic acid for formation energy enhancement in an oilfield

“… 23 In order to make the best use of the catalytic H + , the concentration boundary of H + for promoting the main reaction has to be determined accurately. Dusenbury et al 24 reported that the NaNO 2 /NH 4 Cl system would not generate NO x at pH = 1–6 according to their study on the kinetics and the mechanism. Wu Wengang et al 25 suggested that the in situ N 2 generation system can generate N 2 at room temperature without NO x at pH = 3.…”

Formation of volatile products during nitrate reduction on a Sn-modified Pt electrode in acid solution

“…As the acidity increases, the decomposition of HONO occurs much more rapidly and NO gas and nitric acid are formed [3,21,[26][27][28]. As shown in Fig.…”

“…In an acid environment with a pH value below 5, the nitrite ion exists in equilibria with nitrous acid HONO (HNO 2 ) and nitrosonium (ON + OH 2 ) in solution [3,21,[25][26][27]. As the acidity increases, the decomposition of HONO occurs much more rapidly and NO gas and nitric acid are formed [3,21,[26][27][28].…”

Reaction Kinetics

“…The rate law follows from a mechanism in which the reaction of RNHz and N 2 0S is rate determining when RNHz is low, but at high RNH2, the formation of N20S controls. Their claim that the same rate law describes the reaction of NHs and aliphatic amines with nitrous acid is not supported by the work of Dusenbury & Powell (234). The latter work has, however, been criticized by Austin et al (235).…”