There is widespread interest to utilise CO2 for the manufacture of useful materials as one approach to dealing with its growing concentration in the atmosphere. Though there are many possibilities, it is only its conversion to fuel-type products that conceptually has the capacity to utilise CO2 on a scale approaching its anthropogenic production. Moreover, the reduction of CO2 must be achieved with hydrogen that is generated from a renewable energy source if an environmental benefit is to be gained. We have investigated the use of various metal organic frameworks (MOFs) as catalyst precursors. MOFs are attractive because the active metal components can be introduced in a highly dispersed manner. For example, using Ru, Pt and Fe containing MOFs, we have observed (by TEM, XRD, XPS, etc) the development of novel highly active catalytic materials during exposure to CO2/H2 mixtures at temperatures above 350 C. Some of these new materials, once formed, exhibited space time yields for the conversion of CO2 to hydrocarbons, far exceeding a benchmark catalyst. They also showed no evidence of deactivation over 6 days of continuous use. For the Ru case, this is extremely highly dispersed within a zirconia/carbonaceous matrix, which also derives from the MOF precursor.

CO2 conversion to hydrocarbons with MOF-derived materials as catalysts

2019 Spring National Meeting

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