Functionalized Copper Electrochemical Catalysts for CO2-to-Ethylene Conversion
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Solution Overview
Problem
Existing copper-based catalysts for converting CO2 into small organic molecules like ethylene and methane are inefficient, limiting their use in industrial processes.
Innovation Solution
A functionalized copper catalyst is developed by grafting specific aryl functional groups onto the surface of inorganic electro-catalysts, enhancing current density and Faradaic efficiency for ethylene production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If copper-based catalysts are used for CO2 conversion, then the reaction can proceed, but the efficiency is limited and cannot be used in industrial processes
Solution Approach 1:
The patent modifies the copper catalyst by changing surface parameters through grafting aryl functional groups with specific electronic properties. This alters the electronic structure and surface properties of the copper catalyst, enabling higher current density and Faradaic efficiency for ethylene production, thereby resolving the efficiency limitation of conventional copper catalysts
Solution Approach 2:
The patent creates a composite catalyst system by combining copper with aryl functional groups (such as phenyl, pyridine, or other aromatic substituents). This composite structure integrates the catalytic activity of copper with the electronic modulating effects of the aryl groups, achieving enhanced performance for CO2 conversion that meets industrial requirements
2Productivity
If aryl functional groups are grafted onto copper catalyst surface, then current density and Faradaic efficiency improve, but manufacturing complexity increases
Solution Approach 1:
The patent employs preliminary action by pre-synthesizing the functionalized copper catalyst through a defined sequence of steps: first preparing the copper catalyst, then grafting aryl functional groups onto the surface. This predetermined sequence simplifies the overall process by breaking down the complex modification into manageable stages, making the enhanced catalyst reproducible and scalable
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The catalyst achieves high yields and selectivity for ethylene production, with up to 83% Faradaic efficiency at -3.55 V, surpassing previous copper-based catalysts.
Implementation Method 1
the electrochemical conversion of CO2 into small molecules such as gaseous hydrocarbons (methane, ethylene) or liquid molecules (ethanol, formic acid)
Implementation Method 2
the performance is considerably improved by grafting specific functional groups on the surface of inorganic electro-catalysts
Data Source
AI summary
The present invention belongs to the field of catalytic chemistry, and more specifically to catalysed reduction chemical reactions, preferably of CO2 into small molecules.The present invention relates to a new catalyst compound comprising at least a copper (Cu) layer, wherein the copper layer is functionalized with at least one aryl group and its use thereof in a reduction chemical reaction, preferably in reduction of CO2 into CO, ethylene and other small molecules such as gaseous hydrocarbons (methane, propane) or liquid molecules (ethanol, formic acid, propanol). The invention relates to the process of manufacture of said catalyst compound and to a process electrochemical conversion of CO2 to small molecules and in particular ethylene.