Effect of temperature on SO2 absorption into sulphuric acid solutions containing hydrogen peroxide

2008 ◽  
Vol 47 (9-10) ◽  
pp. 1603-1608 ◽  
Author(s):  
Sandrine Colle ◽  
Jacques Vanderschuren ◽  
Diane Thomas
Keyword(s):  
Hydrogen Peroxide ◽  
Sulphuric Acid ◽  
Effect Of Temperature ◽  
Acid Solutions ◽  
So2 Absorption

The reaction between peroxomonosulphuric acid and cerium(IV) in dilute sulphuric acid solutions

1970 ◽  
Vol 23 (4) ◽  
pp. 641 ◽  
Author(s):  
WHO Billing ◽  
GJ Bridgart ◽  
IR Wilson
Keyword(s):  
Hydrogen Peroxide ◽  
Sulphuric Acid ◽  
Acid Solutions ◽  
Radical Chain ◽  
Rate Law ◽  
Early Stages

The reaction of cerium(1V) with peroxomonosulphuric acid in aqueous sulphuric acid has been shown to involve a short radical chain. Rates of reaction of cerium(1V) have been measured in dilute sulphuric acid solutions. A substantial difference was found between the apparent rate law in the early stages of reaction and that observed later. This is not due to the presence of hydrogen peroxide in the peroxomonosulphate solutions. A tentative mechanism is proposed.

ALKYLGUANIDINE NITRATES AND ALKYLNITROGUANIDINES

1958 ◽  
Vol 36 (5) ◽  
pp. 737-743 ◽  
Author(s):  
Paul E. Gagnon ◽  
Jean L. Boivin ◽  
Paul A. Boivin ◽  
John H. Dickson
Keyword(s):  
Sulphuric Acid ◽  
Effect Of Temperature ◽  
Acid Solutions ◽  
Calcium Cyanamide

The fusion of mixtures of alkylamine nitrates, RR'NH.HNO3 (R' = H when R = methyl, isopropyl, isobutyl, n-amyl, and phenyl, and R' = C2H5 when R = ethyl), and dicyandiamide, or calcium cyanamide, or calcium cyanamide and urea, yielded alkylguanidine nitrates. The latter were also obtained by heating solutions of alkylamine nitrates and calcium cyanamide. By treatment of the alkylguanidine nitrates with sulphuric acid, alkylnitroguanidines were prepared in good yields. A study of the effect of temperature on the yield of n-amyl and of time and temperature on the yields of methyl, isopropyl, and isobutyl nitroguanidine was made. The solubility of methyl, isopropyl, isobutyl, and n-amyl nitroguanidine in water and 10% and 20% sulphuric acid solutions at 0 °C. was determined.

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