621-65-8Relevant articles and documents
Methods of producing glycidyl nitrate
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Page/Page column 14; 15, (2020/03/04)
Methods of producing glycidyl nitrate. The method comprises reacting glycerol and nitric acid in a microfluidic reactor to form a nitrated glycerol compound. The microfluidic reactor comprises a reaction volume of the microfluidic reactor of less than about 20 ml and an inner diameter of a reaction channel of the microfluidic reactor of less than or equal to about 1000 μm. The nitrated glycerol compound is reacted with a base in the microfluidic reactor to form glycidyl nitrate. Additional methods of producing glycidyl nitrate are also disclosed.
Reduction of nitroglycerin with elemental iron: Pathway, kinetics, and mechanisms
Oh, Seok-Young,Cha, Daniel K.,Kim, Byung J.,Chiu, Pei C.
, p. 3723 - 3730 (2007/10/03)
Nitroglycerin (NG) is a nitrate ester used in dynamites, propellants, and medicines and is therefore a common constituent in propellant-manufacturing and pharmaceutical wastewaters. In this study we investigated the reduction of NG with cast iron as a potential treatment method. NG was reduced stepwise to glycerol via 1,2- and 1,3-dinitroglycerins (DNGS) and 1- and 2-mononitroglycerins (MNGs). Nitrite was released in each reduction step and was further reduced to NH4+. Adsorption of NG and its reduction products to cast iron was minimal. A reaction pathway and a kinetic model for NG reduction with cast iron were proposed. The estimated surface area-normalized reaction rate constants for NG and NO2- were (1.65 ± 0.30) × 10-2 (L·m -2·h-1) and (0.78 ± 0.09) × 10 -2 (L·m-2·h-1), respectively. Experiments using dialysis cell with iron and a graphite sheet showed that reduction of NG to glycerol can be mediated by graphite. However, reduction of NO2- mediated by graphite was very slow. NG and NO 2- were also found to reduce to glycerol and NH 4+ by Fe2+ in the presence of magnetite but not by aqueous Fe2+ or magnetite alone. These results indicate that in a cast iron-water system NG may be reduced via multiple mechanisms involving different reaction sites, whereas nitrite is reduced mainly by iron and/or adsorbed Fe2+. The study demonstrates that iron can rapidly reduce NG to innocuous and biodegradable end products and represents a new approach to treat NG-containing wastewaters.