in-situ reduction and FTIR analysis of Ni catalysts using a High Temperature / High Pressure cell.
The increasing CO2 concentration in Earth’s atmosphere is having an adverse effect on the climate. Power-to-methane strategies, in which green electrons are used to produce methane from CO2, can be applied to provide electric grid stability and mitigate CO2 emissions [1]. Nickel is often considered an active and cost-effective metal catalyst to convert CO2 into methane using sustainable hydrogen. While the CO2 hydrogenation reaction is widely studied, the reaction mechanism is still under debate.
Operando Fourier transform infrared spectroscopy (FTIR) is a powerful technique to identify surface intermediates during reaction and can thus provide new mechanistic insights. This note will highlight the use of a Specac High Temperature High Pressure (HTHP) cell to study Ni catalysts in action using operando FTIR. An array of Ni catalysts supported on different metal oxides were used to establish trends in catalytic activity and to find spectroscopic activity descriptors [2].
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