ZEO-1 Extra-Large Pore Molecular Sieve With Stable 3D Channels
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Solution Overview
Problem
There is a need for stable, low-cost, and multi-dimensional extra-large pore silicate molecular sieves that can accommodate larger reactant molecules, as existing materials like germanosilicates and titanosilicates are limited by water adsorption, high cost, or one-dimensional channels, restricting their industrial applications.
Innovation Solution
A new extra-large pore silicate molecular sieve, ZEO-1, is synthesized using a boron or aluminum compound, organic template, and titanium, with a three-dimensional intersecting channel system of (16+12)×(16+12)×(16+12)-membered rings, and a framework that includes titanium atoms, ensuring stability and versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If germanosilicate materials are used to synthesize extra-large pore molecular sieves, then the pore size can be achieved, but the structural stability deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters by eliminating germanium and using pure silicate framework with titanium substitution, while maintaining the extra-large pore structure through specific synthesis conditions and template agents
Solution Approach 2:
The patent creates a composite material system combining silicate framework with titanium atoms and organic template agents, where the composite structure achieves both extra-large pore size and enhanced stability through the synergistic effect of multiple components
2Volume of moving object
If existing extra-large pore molecular sieves are synthesized, then the pore size requirement is met, but the cost increases due to germanium usage
Solution Approach 1:
The patent replaces expensive germanium-based materials with cheaper silicate and titanium compounds, using abundant earth-crust elements to achieve the same functional performance at lower cost
Solution Approach 2:
The patent changes the material composition parameters to use cost-effective elements (silica, titanium oxide) instead of expensive germanium, while maintaining the extra-large pore structure through optimized synthesis parameters
3Productivity
If multi-dimensional extra-large pore structures are created, then the catalytic performance improves, but the synthesis complexity increases
Solution Approach 1:
The patent uses organic template agents as intermediaries that direct the formation of complex multi-dimensional pore structures during synthesis, and are subsequently removed through calcination, leaving the desired porous structure without requiring complex post-processing
Solution Approach 2:
The patent performs preliminary structure direction during the synthesis stage using template agents that pre-organize the framework geometry, simplifying the overall process by establishing complexity early rather than requiring complex final processing
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
ZEO-1 provides a stable, cost-effective solution with multi-dimensional channels, enabling broader industrial applications in catalysis and adsorption, and maintains structural integrity even after calcination.
Implementation Method 1
Molecular sieve materials are a category of inorganic microporous solid materials constituted by TO4 tetrahedrons via common vertexes... These excellent properties endow molecular sieve materials with a wide range of applications in fields of adsorption, separation, catalysis
Data Source
AI summary
Provided are a ZEO-1 silicate molecular sieve having a new structure, a synthesis method therefor and the use thereof. An X-ray powder diffraction feature, a pore channel system and a topology feature of the ZEO-1 molecular sieve are characterized. Further, titanium atoms are successfully introduced in the framework of the ZEO-1 molecular sieve. The ZEO-1 molecular sieve of the present invention has a good thermal stability and can be used as an adsorbent or a catalyst.