Zeolite Structured Catalyst for Methanol Reforming
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Solution Overview
Problem
Zeolite catalysts used in methanol reforming suffer from deactivation due to aluminum element removal and coke deposition, leading to a decline in catalytic function over time.
Innovation Solution
A structured catalyst with a porous zeolite-type support and embedded solid acid nanoparticles, where the nanoparticles are larger than the channel diameter but smaller than the enlarged pore diameter, preventing aggregation and maintaining catalytic activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If zeolite catalysts are used in methanol reforming, then catalytic activity is achieved, but catalytic function degrades over time due to aluminum removal and coke deposition
Solution Approach 1:
The invention extracts the harmful aluminum element from the catalyst structure by using aluminum-free zeolite or silicalite supports, thereby eliminating the source of deactivation. The catalytic function is maintained through alternative metal components (Zn, Fe, Co, Ni, Cu) that do not suffer from aluminum removal issues
Solution Approach 2:
The invention introduces metal components (Zn, Fe, Co, Ni, Cu) as intermediary catalytic centers that replace the traditional aluminum-based acid sites. These metal intermediaries provide the necessary catalytic activity for methanol reforming without the deactivation problems associated with aluminum removal and coke deposition on aluminum sites
2Productivity
If solid acid catalysts are used, then high catalytic activity is achieved, but coke precipitation occurs leading to function decline
Solution Approach 1:
The invention changes the chemical composition parameters of the catalyst by replacing aluminum-based solid acids with metal components supported on aluminum-free zeolite or silicalite. This parameter change modifies the catalytic mechanism to reduce coke formation while maintaining activity
Solution Approach 2:
The invention creates composite catalyst materials combining metal components (Zn, Fe, Co, Ni, Cu) with aluminum-free zeolite or silicalite supports. This composite structure provides both high catalytic activity and resistance to coke deposition by distributing active sites and preventing their deactivation
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 structured catalyst suppresses catalytic function decline, extends its lifespan, and reduces replacement frequency, while maintaining stable catalytic performance in methanol reforming reactions.
Implementation Method 1
a catalytic substance present in the support, the catalytic substance being a solid acid and present least in the channels of the support
Data Source
AI summary
To provide a highly active structured catalyst for methanol reforming that suppresses the decline in catalytic function and has excellent catalytic function, and a methanol reforming device. A structured catalyst for methanol reforming, including:a support of a porous structure composed of a zeolite-type compound; anda catalytic substance present in the support,in which the support has channels communicating with each other, andthe catalytic substance is present at least in the channels of the support.