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Selective Oxidation of Methane with Hydrogen Peroxide Towards Formic Acid in a Micro Fixed-Bed Reactor

, , and . Chemie Ingenieur Technik, 89 (12): 1759--1765 (2017)
DOI: 10.1002/cite.201600174

Abstract

Selective oxidation of methane by using aqueous hydrogen peroxide solution as oxidant was investigated. Colloidal nanosized Cu-Fe-silicalite-1 was prepared and a micro reactor was used to intensify mass transport. It was found that the oxygenate productivity could be enhanced nearly three orders of magnitude while simultaneously ensuring high turn-over-frequencies of some 100 h−1. However, the main product in liquid phase was not methanol, but formic acid. At optimized reaction conditions, a selectivity to formic acid of 96.7 % at a methane conversion of 10.3 % could be achieved.

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