Methanol Catalyst Composition for Long-Term Stability
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Solution Overview
Problem
Conventional methanol production methods face issues with catalyst stability over time, leading to inefficient production processes.
Innovation Solution
A methanol production method using a catalyst composed of copper and zinc with a molar ratio of 0.3 to 0.45 and an alkali metal content of 0.01% to 0.05% by mass, allowing for stable catalyst performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional Cu-ZnO catalyst is used for methanol synthesis, then the basic catalytic function is achieved, but the catalyst stability and lifetime are insufficient
Solution Approach 1:
The patent applies parameter changes by precisely controlling the Zn/Cu molar ratio within 0.3 to 0.45 and limiting alkali metal content to 0.01-0.05% by mass. This optimization of compositional parameters resolves the contradiction by achieving both adequate catalytic activity and enhanced stability, preventing catalyst deactivation while maintaining production efficiency.
Solution Approach 2:
The patent employs composite materials by creating a multi-component catalyst system combining copper, zinc oxide, and controlled alkali metal content. This composite structure synergistically improves catalyst stability and lifetime compared to conventional single-phase Cu-ZnO catalysts, while maintaining the necessary methanol synthesis activity.
2Productivity
If the Zn/Cu molar ratio is optimized for activity, then catalytic performance improves, but catalyst stability may deteriorate
Solution Approach 1:
The patent resolves this contradiction by establishing an optimized parameter range for Zn/Cu molar ratio (0.3 to 0.45) and alkali metal content (0.01-0.05% by mass). This precise parameter control simultaneously achieves high methanol synthesis rates and maintains catalyst stability, avoiding the trade-off between activity and 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 method achieves high catalyst stability, ensuring stable methanol production over extended periods with minimal activity loss.
Implementation Method 1
A method for producing methanol is provided, the method including the step of bringing a raw material gas into contact with a catalyst to obtain methanol
Data Source
AI summary
Provided is a method which is for producing methanol and which achieves high catalyst stability over time. This method for producing methanol includes the step of bringing a raw material gas into contact with a catalyst to obtain methanol, the raw material gas containing a carbon oxide and hydrogen, the catalyst containing (i) copper and zinc at a molar ratio of the zinc relative to the copper (Zn/Cu) of 0.3 to 0.45, and (ii) an alkali metal in an amount of 0% by mass to 0.05% by mass.