Functionalized Zeolitic Frameworks for Gas Separation
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Solution Overview
Problem
Current zeolites struggle to incorporate transition metal ions and organic units within their pores as an integral part of the framework, limiting their catalytic applications due to small pore sizes and lack of tailored electronic and steric properties.
Innovation Solution
Development of zeolitic frameworks with interpenetrating structures and imidazolate linkages, allowing for the incorporation of transition metals and organic units, resulting in high surface area, porosity, and chemical stability, enabling efficient catalysis and gas storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional zeolite structures are used, then chemical stability is maintained, but pore size remains small and transition metal incorporation is limited
Solution Approach 1:
The patent creates composite zeolitic frameworks that combine inorganic SiO4 tetrahedra with organic linking moieties and transition metal ions. This composite structure allows the material to achieve larger pore volumes while incorporating transition metals as integral framework components, resolving the contradiction between maintaining chemical stability and enabling metal incorporation.
Solution Approach 2:
The patent introduces functionalized organic linking moieties at specific locations within the zeolite framework to create localized regions with tailored properties. This allows transition metal ions to be incorporated at specific sites within the pores, enabling local customization of electronic and steric properties without compromising the overall structural stability.
2Productivity
If transition metal ions are incorporated into zeolite framework, then catalytic activity is improved, but structural integrity is compromised
Solution Approach 1:
The patent merges transition metal ions with the zeolite framework through coordination bonds with organic linking moieties, creating an integrated structure where the metal ions are not merely embedded but are integral components. This merging allows catalytic activity to be enhanced while the overall framework integrity is maintained through the cooperative network of inorganic and organic elements.
3Adaptability or versatility
If organic units are incorporated within zeolite pores, then functional versatility is improved, but synthesis complexity increases
Solution Approach 1:
The patent employs organic linking moieties that are pre-functionalized with specific groups before being incorporated into the zeolite framework. This preliminary functionalization allows the organic units to be integrated in a controlled manner, enabling functional versatility to be achieved while managing synthesis complexity through pre-designed building blocks.
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 zeolitic frameworks exhibit exceptional chemical stability and high porosity, outperforming traditional zeolites and MOFs, with applications in catalysis, gas storage, and sensors, and demonstrate rich structural diversity.
Implementation Method 1
a network of homogenous or heterogeneous transition metals linked by a homogenous or heterogeneous linking moiety
Implementation Method 2
Some zeolitic frameworks of the invention can be used to adsorbed chemical species (e.g., ammonia, carbon dioxide, carbon monoxide, hydrogen, amines, methane, oxygen, argon, nitrogen)
Data Source
Figure 1
Figure 2a~2c
Figure 3a~3d
AI summary
The disclosure provides zeolitic frameworks for gas separation, gas storage, catalysis and sensors. More particularly the disclosure provides zeolitic frameworks (ZIFs) The ZIF of the disclosure comprises any number of transition metals or a homogenous transition metal composition.