Suitable combination of promoter and micellar catalyst for chromic acid oxidation of formaldehyde to formic acid in aqueous acid media at room temperature

2014 ◽  
Vol 53 (1) ◽  
pp. 146-161 ◽  
Author(s):  
Sumanta K. Ghosh ◽  
Aniruddha Ghosh ◽  
Rumpa Saha ◽  
Bidyut Saha
Keyword(s):  
Formic Acid ◽  
Room Temperature ◽  
Chromic Acid ◽  
Acid Oxidation ◽  
Acid Media ◽  
Aqueous Acid ◽  
Chromic Acid Oxidation ◽  
Suitable Combination

Micellar effect on hetero-aromatic nitrogen base promoted chromic acid oxidation of 1.3-propanediol in aqueous media at room temperature

2017 ◽  
Vol 225 ◽  
pp. 207-216 ◽  
Author(s):  
Susanta Malik ◽  
Debabrata Saha ◽  
Monohar Hossain Mondal ◽  
Pintu Sar ◽  
Aniruddha Ghosh ◽  
...  
Keyword(s):  
Room Temperature ◽  
Chromic Acid ◽  
Aqueous Media ◽  
Acid Oxidation ◽  
Nitrogen Base ◽  
Chromic Acid Oxidation ◽  
Micellar Effect

Selection of Promoter and Micellar Catalyst for Chromic Acid Oxidation of Tartaric Acid in Aqueous Medium at Room Temperature

2013 ◽  
Vol 50 (6) ◽  
pp. 441-445 ◽  
Author(s):  
Kakali Mukherjee ◽  
Sumanta K. Ghosh ◽  
Rumki Nandi ◽  
Aniruddha Ghosh ◽  
Indrajit Saha ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Tartaric Acid ◽  
Room Temperature ◽  
Chromic Acid ◽  
Acid Oxidation ◽  
Chromic Acid Oxidation ◽  
Selection Of

Chromic oxidation of lactic acid in very strong acid media

1990 ◽  
Vol 68 (1) ◽  
pp. 29-32 ◽  
Author(s):  
María Piedad Alvarez-Macho ◽  
María Isabel Montequi-Martin
Keyword(s):  
Lactic Acid ◽  
Chromic Acid ◽  
Strong Acid ◽  
Mineral Acid ◽  
Acid Oxidation ◽  
Acid Media ◽  
Chromic Acid Oxidation ◽  
Rate Determining Step ◽  
Entropy Of Activation ◽  
High Concentrations

The oxidation of lactic acid by chromic acid was studied at high concentrations of HClO4, HNO3, and H2SO4. It was observed that the reaction rate depends not only on the acidity of the medium, but also on the nature of the mineral acid. The use of the Bunnett and Bunnett–Olsen criteria and the excess acidity concept allows us to propose a reaction mechanism of the A-2 type, the rate-determining step being a bimolecular process in which water participates as a nucleophile. The enthalpy and entropy of activation were determined; the decrease of the magnitude of these parameters when the acidity of the medium was increased suggests the existence of a compensation effect. Keywords: chromic acid, oxidation, lactic acid, acidic media.

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