Catalytic composition for the electrochemical reduction of carbon dioxide
First Claim
1. A method of making a catalytic composition for the electrochemical reduction of carbon dioxide, comprising the steps of:
- dissolving nickel nitrate hexahydrate, Ni(NO3)2.6H2O, in deionized water to form a nickel precursor solution;
sonicating the nickel precursor solution;
impregnating the sonicated nickel precursor solution in a support material comprising multi-walled carbon nanotubes to form a slurry;
sonicating the slurry to form a homogenous solid solution;
removing solids from the homogenous solid solution;
drying the solids; and
calcining the dried solids in an argon atmosphere to form the catalytic composition.
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Abstract
The catalytic composition for the electrochemical reduction of carbon dioxide is a metal oxide supported by multi-walled carbon nanotubes. The metal oxide may be nickel oxide (NiO) or tin dioxide (SnO2). The metal oxides form 20 wt % of the catalyst. In order to make the catalysts, a metal oxide precursor is first dissolved in deionized water to form a metal oxide precursor solution. The metal oxide precursor solution is then sonicated and the solution is impregnated in a support material composed of multi-walled carbon nanotubes to form a slurry. The slurry is then sonicated to form a homogeneous solid solution. Solids are removed from the homogeneous solid solution and dried in an oven for about 24 hours at a temperature of about 110° C. Drying is then followed by calcination in a tubular furnace under an argon atmosphere for about three hours at a temperature of 450° C.
9 Citations
4 Claims
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1. A method of making a catalytic composition for the electrochemical reduction of carbon dioxide, comprising the steps of:
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dissolving nickel nitrate hexahydrate, Ni(NO3)2.6H2O, in deionized water to form a nickel precursor solution; sonicating the nickel precursor solution; impregnating the sonicated nickel precursor solution in a support material comprising multi-walled carbon nanotubes to form a slurry; sonicating the slurry to form a homogenous solid solution; removing solids from the homogenous solid solution; drying the solids; and calcining the dried solids in an argon atmosphere to form the catalytic composition. - View Dependent Claims (2, 3, 4)
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Specification