Metal-Carrying Activated Carbon for Better Catalyst Microparticulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing catalysts using activated carbon for hydrogenation reactions face limitations in improving catalytic performance due to insufficient microparticulation of metal catalysts and limited specific surface area, leading to increased costs and suboptimal reaction efficiency.
Innovation Solution
The development of activated carbon with specific conductivity, oxygen content, and pore size ranges that enhance catalytic performance without increasing the specific surface area, achieved through controlled heat treatment, activation, and oxidation processes, allowing for effective metal dispersion and interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the specific surface area of activated carbon is increased to improve catalytic performance, then catalytic performance improves, but cost increases
Solution Approach 1:
The invention changes the physical parameters of activated carbon by controlling the heat treatment conditions (temperature, time, atmosphere) to achieve optimal electric conductivity (3.5-15 S/cm) and oxygen content (2-8%) without excessively increasing specific surface area. This parameter optimization resolves the contradiction by finding the cost-effective sweet spot for catalytic performance.
Solution Approach 2:
The invention creates a composite structure by combining activated carbon with controlled physical properties (electric conductivity, oxygen content, pore size distribution) with metal catalysts. The synergistic interaction between the optimized carbon matrix and metal particles achieves enhanced catalytic performance without proportionally increasing cost.
2Productivity
If oxidation treatment is applied to improve microparticulation of metal catalyst, then reaction efficiency improves, but microparticulation is limited and performance remains unsatisfactory
Solution Approach 1:
The invention performs preliminary heat treatment and oxidation treatment on the activated carbon before metal catalyst loading. This preliminary preparation creates an optimized carbon matrix with controlled electric conductivity and oxygen content that facilitates effective microparticulation of subsequent metal catalysts, resolving the limitation of conventional post-loading oxidation approaches.
Solution Approach 2:
The invention optimizes the oxidation treatment parameters (temperature, time, atmosphere composition) to achieve the target electric conductivity and oxygen content ranges. This controlled parameter adjustment enables effective microparticulation while avoiding excessive oxidation that would degrade carbon structure, thereby improving reaction efficiency reliability.
3Productivity
If metal catalyst is dispersed on activated carbon to improve catalytic performance, then reaction efficiency improves, but metal microparticulation is insufficient
Solution Approach 1:
The invention creates local quality variations in the activated carbon matrix by controlling pore size distribution (0.3-2.0 μm) and creating regions with different electric conductivity and oxygen content. This local heterogeneity promotes uniform metal catalyst dispersion and effective microparticulation, resolving the contradiction between dispersion quality and particulation effectiveness.
Solution Approach 2:
The invention optimizes multiple physical parameters of activated carbon simultaneously (electric conductivity, oxygen content, pore size, specific surface area) to create conditions that favor effective metal microparticulation. The协同 effect of these parameter optimizations enables superior metal dispersion and particulation compared to conventional single-parameter adjustments.
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 activated carbon exhibits excellent catalytic performance with improved reaction efficiency and cost-effectiveness by maintaining metal microparticulation and enhancing interaction with the metal catalyst, suitable for hydrogenation reactions.
Implementation Method 1
an electric conductivity of 3.5 S/cm or more and 15 S/cm or less obtained by powder resistance measurement under a load of 12 kN
Implementation Method 2
a catalyst in which a metal catalyst such as a noble metal is carried on a carbon material such as an activated carbon
Implementation Method 3
an activated carbon is previously heat-treated (oxidized) at 300 to 500°C in air, and then subjected to an ion exchange method to form a surface functional group
Data Source
AI summary
The present invention relates to an activated carbon having an electric conductivity of 3.5 S/cm or more obtained by powder resistance measurement under a load of 12 kN and an oxygen content of 3.0% by mass or more, and a metal-carrying activated carbon using the same, and the like.