Environmental Engineering Reference
In-Depth Information
Table 4.9 Comparison between Grakauskas method and TerMeer method in the production of DNPOH
Method
Starting
material
Intermediates (Catalysts, oxidizing
agents, etc.)
Controlling conditions
Production
cost
Final
yield
(%)
Extent of
environmental
pollution
Grakauskas
method
Nitroethane
Ferricyanide, potassium persulfate,
NaNO
2
, Ethyl acetate
pH value oxidation time
Relatively
lower
78
Very small
TerMeer
method
Nitroethane
Cl
2
, NaOH, EDC, H
2
SO
4
Re
uxing time, extraction
temperature
fl
Lower
83
Large amount of
wastewater
Electrolysis
Nitropropanol
Lithium perchlorate, sodium nitrite,
electrolysis, electrode
Current voltage concentra-
tion of electrolyte
Very high
70
Very small
