Electrochemical Mass Spectrometric Study of 2-Methyl-propane Adsorbates Formed at Platinum in Phosphoric Acid at 105°C

Electrochemical mass spectrometry was used to study the adsorbates formed from 2-methyl propane in 85% phosphoric acid at 105°C at platinum. The adsorbates backbone progressively goes stepwise from four carbons to one carbon, with some overlap as the potential becomes more positive. Carbon dioxide production is at its maximum when the electrode adsorbates consist primarily of four and three carbon adsorbates. 2-Methyl propane is quantitatively oxidized to carbon dioxide and water.