This week in Nature: Running hot and cold – rapid heating and quenching offers performance improvements for thermochemical syntheses. Browse the full issue here:
At industrial scales, chemical reactions are typically driven by applying continuous heat to the reactants. In this week’s issue,show that pulsed heating and quenching can enhance synthetic performance while also saving energy. The researchers use a programmable electric current to switch between high and low temperatures very quickly — typically 0.
02 seconds on, 1.08 seconds off. Rapidly quenching the reaction gives high selectivity, maintains catalyst stability and reduces energy usage. The cover image illustrates the heater in action for the pyrolysis of methane — the model reaction the team tested. Methane molecules travel through the pores of the high-temperature heater and are selectively converted into useful products.
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