Porous Carbon Catalyst Support for Hydrogenation
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Solution Overview
Problem
There is a need for a porous carbon material that can effectively support a catalyst for the hydrogenation reduction of low-reactive substrates, as existing materials are not suitable for this purpose.
Innovation Solution
A porous carbon material with specific resistance values and mesopore volumes optimized for catalyst support, derived from plant-based materials like husks, and treated with acid or alkaline processes followed by carbonization and activation, to enhance its catalytic performance for hydrogenation reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional porous carbon materials are used as catalyst supports, then general adsorption capacity is achieved, but catalytic effectiveness for hydrogenation reduction of low-reactive substrates is insufficient
Solution Approach 1:
The patent applies parameter changes by precisely controlling the specific resistance (30 Ω·cm or less) and mesopore volume (0.5 cm³/g or more) of the porous carbon material. These parameter optimizations enable the catalyst support to effectively facilitate hydrogenation reduction reactions of low-reactive substrates, transforming conventional adsorption-only functionality into catalytically active support with enhanced electron conductivity and optimized mass transport.
2Reliability
If the specific resistance of porous carbon material is reduced to improve electron conductivity, then catalytic activity increases, but manufacturing complexity increases
Solution Approach 1:
The patent employs preliminary action by incorporating silicon component removal (via acid or alkaline treatment) before carbonization. This pre-treatment step prevents silicon from interfering with the carbonization process and subsequent pore structure development, ensuring the achieved specific resistance of 30 Ω·cm or less is maintained while simplifying the overall manufacturing process through systematic advance preparation.
Solution Approach 2:
The patent utilizes porous materials principles by optimizing the mesopore volume to 0.5 cm³/g or more while controlling specific resistance. The porous structure provides both high surface area for catalyst support and sufficient electron conductivity through the carbon matrix, achieving a balance between catalytic activity and manufacturing feasibility through controlled pore development during carbonization and activation.
3Productivity
If mesopore volume is increased to improve mass transport, then substrate accessibility increases, but structural stability may decrease
Solution Approach 1:
The patent applies parameter changes by simultaneously optimizing multiple parameters: specific resistance (≤30 Ω·cm), mesopore volume (≥0.5 cm³/g), and heat treatment temperature (1200-2000°C). The high-temperature heat treatment after activation strengthens the carbon structure despite high mesopore content, while the controlled specific resistance ensures electron conductivity is maintained. This multi-parameter optimization achieves both high substrate accessibility and structural stability.
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 optimized porous carbon material significantly improves the reactivity of supported catalysts for hydrogenation reduction reactions, particularly for low-reactive ketones, by adjusting its specific resistance and mesopore volume within specific ranges.
Implementation Method 1
it has been found that a porous carbon material having a specific resistance value of 30 Ω·cm or less at a packing density of 0.3 g/cc, and having a mesopore volume of 0.5 cm³/g or more, and a conductive skeleton structure formed by heat treatment at a high temperature of 1200°C or higher
Implementation Method 2
The pores are formed inside the carbon in the form of network, and the pores create a large surface area. Therefore, the porous carbon material has an excellent adsorption capacity.
Data Source
AI summary
A porous carbon material including a porous carbon material having a specific resistance value of 30 Ω·cm or less at a packing density of 0.3 g/cc, wherein a mesopore volume (cm3/g) of the porous carbon material as measured by the BJH method is 0.5 cm3/g or greater.