Sustainable Acrylic Acid Production via Direct CO2 Conversion
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Solution Overview
Problem
Existing processes for converting carbon dioxide into organic acids, such as methanol and formaldehyde, are energy-intensive and involve hazardous intermediates, wasting energy and posing safety hazards due to the need for additional hydrogenation steps.
Innovation Solution
A process that converts carbon dioxide directly into formic acid, which is then reacted with unsaturated hydrocarbons in the presence of a supported palladium catalyst, strong acid, and phosphine to produce organic acids like acrylic acid without the intermediate step of hydrogenating formic acid to methanol, reducing energy consumption and safety risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If carbon dioxide is converted to organic acids through existing processes involving methanol and formaldehyde intermediates, then organic acids can be produced, but energy consumption increases and safety hazards arise from hazardous intermediates
Solution Approach 1:
The patent removes the hazardous intermediate steps (hydrogenation of CO2 to methanol, oxidation to formaldehyde) from the process chain, extracting only the essential carbon dioxide to organic acid conversion while eliminating the energy-intensive and hazardous intermediate compounds
Solution Approach 2:
The patent introduces a formic acid-tolerant catalyst as a mediator that enables direct conversion of carbon dioxide to organic acids without requiring the traditional hazardous intermediates, thereby reducing both energy consumption and safety risks
2Productivity
If additional hydrogenation steps are added to convert carbon dioxide to organic acids, then conversion efficiency improves, but process complexity and energy usage increase
Solution Approach 1:
The patent combines multiple reaction steps (carbon dioxide hydrogenation, formic acid formation, and organic acid synthesis) into a single integrated catalytic process, achieving high conversion efficiency while reducing process complexity by eliminating separate hydrogenation and oxidation stages
3Ease of manufacture
If traditional catalytic processes are used for carbon dioxide conversion, then established methods can be applied, but energy-intensive steps and hazardous intermediates are required
Solution Approach 1:
The patent changes the catalytic parameters by using a formic acid-tolerant catalyst system that operates under milder conditions, reducing energy intensity while maintaining process feasibility through optimized catalyst composition and reaction conditions
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
This process achieves high yields of organic acids with reduced energy usage and eliminates the hazards associated with methanol intermediates, offering a more efficient and safer method for producing chemicals from carbon dioxide.
Implementation Method 1
reacting the amount of carbon monoxide with an amount of an unsaturated hydrocarbon in the presence of: (a) a supported palladium catalyst
Implementation Method 2
reacting the amount of carbon monoxide with an amount of an unsaturated hydrocarbon in the presence of: (a) a supported palladium catalyst; (b) a strong acid
Implementation Method 3
reacting the amount of carbon monoxide with an amount of an unsaturated hydrocarbon in the presence of: (a) a supported palladium catalyst; (c) a phosphine
Data Source
AI summary
A process for the production of organic acids having at least three carbon atoms comprises the steps of forming an amount of carbon monoxide and reacting the amount of carbon monoxide with an amount of an unsaturated hydrocarbon. The reaction is preferably carried out in the presence of a supported palladium catalyst, a strong acid, and a phosphine. In some embodiments, the unsaturated hydrocarbon is one of acetylene and methylacetylene, and the organic acid is one of acrylic acid and methyl acrylic acid. The reacting step is preferably performed with carbon monoxide produced from carbon dioxide.