Electrochemical reduction of oxygen: an alternative method to prepare active CoN4 catalysts was written by Bouwkamp-Wijnoltz, A. L.;Visscher, W.;Van Veen, J. A. R.;Tang, S. C.. And the article was included in Electrochimica Acta in 1999.SDS of cas: 2199-49-7 This article mentions the following:
An alternative method for preparing active catalysts for oxygen reduction with a similar performance as heat treated cobalt porphyrin on carbon is presented. The catalysts were prepared from cobalt acetate, carbon black and a nitrogen donor. Several nitrogen donors were studied. The best results were obtained with 2,5-dimethylpyrrole. In this case the activity of the heat treated cobalt porphyrin could be matched. EXAFS indicated that similar active sites were found on both types of catalyst, although in the alternative catalyst some metallic cobalt is also present. In the experiment, the researchers used many compounds, for example, Ethyl 4-methyl-1H-pyrrole-3-carboxylate (cas: 2199-49-7SDS of cas: 2199-49-7).
Ethyl 4-methyl-1H-pyrrole-3-carboxylate (cas: 2199-49-7) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.SDS of cas: 2199-49-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics