in water BaSO4 filtered off; neutralization; evapn. of filtrate at 40°C; drying over P2O5; N2H5NO3 sepd. from NaNO3 by melting (100-110°C) and extn. with MeOH;
dropwise addn. of cc. nitric acid; ice-cooling; precipitation in liquid nitrogen, suction filtering, washing with ethanol, vacuum drying, recrystallization from hot methanol, suction filtering, vacuum drying;
参考文献
Miyake; Kimura; Satoh; Shimizu; Inano; Ogawa
Journal of Thermal Analysis and Calorimetry, 2006 , vol. 85, # 3 p. 633 - 636
catalyst: Pt/SiO2 in nitric acid
Kinetics; soln. mixed, 1percent Pt/SiO2 catalyst added, mixt. stirred by bubbling with Ar in glass reactor; monitored spectrophotometrically, by pH-metry and MS;
