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High C2-C4 selectivity in CO2 hydrogenation by particle size control of Co-Fe alloy nanoparticles wrapped on N-doped graphitic carbon.

ABSTRACT: A catalyst based on first-row Fe and Co with a record of 51% selectivity to C2-C4 hydrocarbons at 36% CO2 conversion is disclosed. The factors responsible for the C2+ selectivity are a narrow Co-Fe particle size distribution of about 10 nm and embedment in N-doped graphitic matrix. These hydrogenation catalysts convert CO2 into C2-C4 hydrocarbons, including ethane, propane, n-butane, ethylene and propylene together with methane, CO. Selectivity varies depending on the catalyst, CO2 conversion, and the operation conditions. Operating with an H2/CO2 ratio of 4 at 300°C and pressure on 5 bar, a remarkable combined 30% of ethylene and propylene at 34% CO2 conversion was achieved. The present results open the way to develop an economically attractive process for CO2 reduction leading to products of higher added value and longer life cycles with a substantial selectivity.

SUBMITTER: Peng L 

PROVIDER: S-EPMC9062353 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature

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High C<sub>2</sub>-C<sub>4</sub> selectivity in CO<sub>2</sub> hydrogenation by particle size control of Co-Fe alloy nanoparticles wrapped on N-doped graphitic carbon.

Peng Lu L   Jurca Bogdan B   Primo Ana A   Gordillo Alvaro A   Parvulescu Vasile I VI   García Hermenegildo H  

iScience 20220414 5

A catalyst based on first-row Fe and Co with a record of 51% selectivity to C<sub>2</sub>-C<sub>4</sub> hydrocarbons at 36% CO<sub>2</sub> conversion is disclosed. The factors responsible for the C<sub>2+</sub> selectivity are a narrow Co-Fe particle size distribution of about 10 nm and embedment in N-doped graphitic matrix. These hydrogenation catalysts convert CO<sub>2</sub> into C<sub>2</sub>-C<sub>4</sub> hydrocarbons, including ethane, propane, <i>n-</i>butane, ethylene and propylene togeth  ...[more]

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