Catalysts for converting carbon dioxide and methane to synthesis gas
AssigneeQatar Foundation for Education, Science and Community Development
InventorsNimir Elbashir, Chatla Anjaneyulu, Minhaj Mohammed Ghouri
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Abstract
Catalysts for converting carbon dioxide and methane to synthesis gas include an alumina supported copper-nickel alloy composition having the formula NixCuy. The catalyst comprises about 70% to about 98% by weight of alumina in the catalyst, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and wherein a ratio of x to y is about 3:1 to about 10:1. In one embodiment, the Ni—Cu catalyst composition according to the present disclosure is derived by state of the art electronic structure calculations based on Density Functional Theory (DFT).
Claims32
A catalyst for converting methane and carbon dioxide to synthesis gas, the catalyst comprising:
- an alumina-supported copper-nickel alloy composition having a formula NixCuy, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and wherein a ratio of x to y is about 3:1 to about 10:1,
- wherein the catalyst comprises about 70% to about 98% by weight of alumina in the catalyst.
A method for converting carbon dioxide and methane to synthesis gas, the method comprising:
- processing a feedstock comprising methane and carbon dioxide stream in presence of a catalyst, whereby the synthesis gas including carbon monoxide and hydrogen is produced, wherein the catalyst comprises an alumina-supported copper-nickel alloy composition having a formula NixCuy, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and wherein a ratio of x to y is about 3:1 to about 10:1,
- wherein the catalyst comprises about 70% to about 98% by weight of alumina in the catalyst.
A catalyst for converting methane and carbon dioxide to synthesis gas, the catalyst comprising:
- an alumina-supported copper-nickel alloy composition having a formula NixCuy, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and,
- wherein a ratio of x to y is about 5:1 to about 9:1.
A method for converting carbon dioxide and methane to synthesis gas, the method comprising:
- processing a feedstock comprising methane and carbon dioxide stream in presence of a catalyst, whereby the synthesis gas including carbon monoxide and hydrogen is produced, wherein the catalyst comprises an alumina-supported copper-nickel alloy composition having a formula NixCuy, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and wherein a ratio of x to y is about 3:1 to about 10:1,
- wherein the ratio of x to y is selected by using an ab-initio density functional theory calculation for an activation barrier of processing the methane.
A method for converting carbon dioxide and methane to synthesis gas, the method comprising:
- processing a feedstock comprising methane and carbon dioxide stream in presence of a catalyst, whereby the synthesis gas including carbon monoxide and hydrogen is produced, wherein the catalyst comprises an alumina-supported copper-nickel alloy composition having a formula NixCuy, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and wherein a ratio of x to y is about 3:1 to about 10:1,
- wherein the ratio of x to y is selected by using an ab-initio density functional theory calculation for each elementary reaction of dry reforming of the methane.
A method for converting carbon dioxide and methane to synthesis gas, the method comprising:
- processing a feedstock comprising methane and carbon dioxide stream in presence of a catalyst, whereby the synthesis gas including carbon monoxide and hydrogen is produced, wherein the catalyst comprises an alumina-supported copper-nickel alloy composition having a formula NixCuy, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and wherein a ratio of x to y is about 3:1 to about 10:1,
- wherein a conversion percentage of methane is in a range of 1-80%.
A method for converting carbon dioxide and methane to synthesis gas, the method comprising:
- processing a feedstock comprising methane and carbon dioxide stream in presence of a catalyst, whereby the synthesis gas including carbon monoxide and hydrogen is produced, wherein the catalyst comprises an alumina-supported copper-nickel alloy composition having a formula NixCuy, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and wherein a ratio of x to y is about 3:1 to about 10:1,
- wherein a conversion percentage of CO2 is in a range of 1-90%.
A method for converting carbon dioxide and methane to synthesis gas, the method comprising:
- processing a feedstock comprising methane and carbon dioxide stream in presence of a catalyst, whereby the synthesis gas including carbon monoxide and hydrogen is produced, wherein the catalyst comprises an alumina-supported copper-nickel alloy composition having a formula NixCuy, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and wherein a ratio of x to y is about 3:1 to about 10:1,
- wherein a H2/CO ratio of the synthesis gas obtained is in a range of 1-1.2.
Dependencies are inferred from the claim text.