Micellar effect on pentavalent vanadium  oxidation of formaldehyde to formic acid in aqueous acid media at room temperature

2014 ◽  
Vol 41 (8) ◽  
pp. 5331-5352 ◽  
Author(s):  
Pintu Sar ◽  
Aniruddha Ghosh ◽  
Rumpa Saha ◽  
Bidyut Saha
Keyword(s):  
Formic Acid ◽  
Room Temperature ◽  
Acid Media ◽  
Aqueous Acid ◽  
Pentavalent Vanadium ◽  
Micellar Effect

Cooxidation of formic acid and oxalic acid by chromium(VI) in aqueous acid media: a kinetic study

2001 ◽  
Vol 2001 (8) ◽  
pp. 334-335 ◽  
Author(s):  
Asim K. Das ◽  
Aparna Roy ◽  
Bidyut Saha ◽  
Mahua Das
Keyword(s):  
Oxalic Acid ◽  
Formic Acid ◽  
Kinetic Study ◽  
Acid Media ◽  
Aqueous Acid ◽  
Chromium Vi

Micellar Catalysis on Pentavalent Vanadium Ion Oxidation of Ethanol in Aqueous Acid Media

2012 ◽  
Vol 49 (4) ◽  
pp. 296-299 ◽  
Author(s):  
Sumanta K. Ghosh ◽  
Aniruddha Ghosh ◽  
Rumpa Saha ◽  
Kakali Mukherjee ◽  
Ankita Basu ◽  
...  
Keyword(s):  
Micellar Catalysis ◽  
Acid Media ◽  
Aqueous Acid ◽  
Pentavalent Vanadium ◽  
Vanadium Ion ◽  
Oxidation Of Ethanol

Micellar Effect on the Catalytic Co-Oxidation of Dimethyl Sulfoxide and Oxalic Acid by Chromium(VI) in Aqueous Acid Media: A Kinetic Study

2005 ◽  
Vol 30 (3) ◽  
pp. 215-226 ◽  
Author(s):  
Bidyut Saha ◽  
Monirul Islam ◽  
Asim K. Das
Keyword(s):  
Electron Transfer ◽  
Oxalic Acid ◽  
Dimethyl Sulfoxide ◽  
Ternary Complex ◽  
Single Step ◽  
Experimental Conditions ◽  
Acid Media ◽  
Aqueous Acid ◽  
Chromium Vi ◽  
Micellar Effect

The CrVI oxidation of a mixture of dimethyl sulfoxide (DMSO) and oxalic acid (OXH2) in aqueous acid media occurs much faster than that of either of the two substrates alone (DMSO reacts extremely slowly under the experimental conditions). In the mixture, both substrates undergo oxidation simultaneously in a ternary complex of CrVI through a three electron transfer step (i.e. CrVI → CrIII), two electrons from DMSO and one electron from oxalic acid. Hitherto there has been a debate regarding the existence of a 3e transfer in a single step. The micellar effect may be considered as a probe for 3e transfer in a single step.

scholarly journals A Process for Hydrogen Production from the Catalytic Decomposition of Formic Acid over Iridium—Palladium Nanoparticles

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3258
Author(s):  
Hamed M. Alshammari ◽  
Mohammad Hayal Alotaibi ◽  
Obaid F. Aldosari ◽  
Abdulellah S. Alsolami ◽  
Nuha A. Alotaibi ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Formic Acid ◽  
Activated Charcoal ◽  
Palladium Nanoparticles ◽  
Room Temperature ◽  
Catalytic Decomposition ◽  
Conversion Yield ◽  
Production Of Hydrogen ◽  
Commercial Applications

The present study investigates a process for the selective production of hydrogen from the catalytic decomposition of formic acid in the presence of iridium and iridium–palladium nanoparticles under various conditions. It was found that a loading of 1 wt.% of 2% palladium in the presence of 1% iridium over activated charcoal led to a 43% conversion of formic acid to hydrogen at room temperature after 4 h. Increasing the temperature to 60 °C led to further decomposition and an improvement in conversion yield to 63%. Dilution of formic acid from 0.5 to 0.2 M improved the decomposition, reaching conversion to 81%. The reported process could potentially be used in commercial applications.

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