Study on hydrogen and carbon monoxide produced by radiation degradation of N,N-dimethylhydroxylamine

Organic reductants of Pu and Np ions in wet technology for spent nuclear fuel reprocessing

“…The formation of formaldehyde in the reaction of Np(VI) with methylhydroxylamine CH 3 NHOH [44], of acetaldehyde and ethanol in the reaction of Np(VI) with diethylhydroxylamine (C 2 H 5 ) 2 NHOH [45], and of nitromethane and ethanol in the reaction of Pu(IV) with (C 2 H 5 ) 2 NHOH [when determining the composition of the products, Ce(IV) was used as an analog of Pu] [46] was confirmed experimentally. As noted in [47], in irradiation of a 0.2 M aqueous solution of diethylhydroxylamine to a dose of 10-100 kGy, the major decomposition products are gaseous methane, ethane, propane, and butane. The reaction of (C 2 H 5 ) 2 NHOH with HNO 2 yields C 2 H 5 OH and CH 3 CHO at the reductant taken in excess and CH 3 COOH at the reductant deficiency [48].…”

Effect of HNO₃ on the &gamma; Radiolysis and Radiolytic Liquid Products of <em>N, N</em>-Dimethylhydroxylamine

“…of DMHA Our research group has studied the radiolysis of aqueous DMHA solutions and their radiolytic liquid organics. 23 For the 0.1-0.5 mol•L -1 DMHA solutions that were irradiated from 5 to 25 kGy, the main radiolytic liquid organics are N-methyl hydrox- Vol.31 ylamine, HCHO, and HCOOH. The concentration of N-methyl hydroxylamine and HCHO is much higher than that of HCOOH.…”

“…Pu(III) and Np(V) are stable for specific periods of time in acid solutions and, therefore, DMHA is a good prospect in this regard. Our research group [21][22][23] has studied the radiolysis and radiolytic products of aqueous DMHA solutions and found that DMHA has good radiation stability. The main radiolytic liquid products are N-methyl hydroxylamine, HCHO, and HCOOH, and the concentrations of N-methyl hydroxylamine and HCHO are much higher than that of HCOOH.…”