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Bosch reaction
The Bosch reaction is a catalytic chemical reaction between carbon dioxide (CO2) and hydrogen (H2) that produces elemental carbon (C,graphite), water, and a 10% return of invested heat. CO2 is usually reduced by H2 to carbon in presence of a catalyst (e.g. iron (Fe)) and requires a temperature level of 530–730 °C (986–1,346 °F).
The overall reaction is as follows:
The above reaction is actually the result of two reactions. The first reaction, the reverse water gas shift reaction, is a fast one:
The second reaction is the rate determining step:
The overall reaction produces 2.3×103 joules for every gram of carbon dioxide reacted at 650 °C. Reaction temperatures are in the range of 450 to 600 °C.
The reaction can be accelerated in the presence of an iron, cobalt or nickel catalyst. Ruthenium also serves to speed up the reaction.
Together with the Sabatier reaction, the Bosch reaction is studied as a way to remove carbon dioxide and to generate clean water aboard a space station.
The reaction is also used to produce graphite for radiocarbon dating with Accelerator Mass Spectrometry.
Bosch reaction
The Bosch reaction is a catalytic chemical reaction between carbon dioxide (CO2) and hydrogen (H2) that produces elemental carbon (C,graphite), water, and a 10% return of invested heat. CO2 is usually reduced by H2 to carbon in presence of a catalyst (e.g. iron (Fe)) and requires a temperature level of 530–730 °C (986–1,346 °F).
The overall reaction is as follows:
The above reaction is actually the result of two reactions. The first reaction, the reverse water gas shift reaction, is a fast one:
The second reaction is the rate determining step:
The overall reaction produces 2.3×103 joules for every gram of carbon dioxide reacted at 650 °C. Reaction temperatures are in the range of 450 to 600 °C.
The reaction can be accelerated in the presence of an iron, cobalt or nickel catalyst. Ruthenium also serves to speed up the reaction.
Together with the Sabatier reaction, the Bosch reaction is studied as a way to remove carbon dioxide and to generate clean water aboard a space station.
The reaction is also used to produce graphite for radiocarbon dating with Accelerator Mass Spectrometry.
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