Crystalline Hybrid Nanoporous Composite Shaping
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Solution Overview
Problem
Crystalline hybrid nanoporous materials face challenges in maintaining their high surface area and porosity when converted into composite forms due to low mechanical stability and thermal sensitivity, leading to reduced adsorption capabilities and difficulty in shaping without compromising their structure.
Innovation Solution
A method involving the use of organic polymeric and optional inorganic additives to create a composite with a spherical or egg shape, where the crystalline hybrid nanoporous material powder is mixed with solvents and additives, then mechanically pulverized and shaped without mechanical compaction, followed by heat treatment or other treatments to remove solvents, preserving the material's surface area and porosity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If crystalline hybrid nanoporous material is converted into composite form by conventional molding methods, then mechanical stability and shape are improved, but surface area and porosity decrease
Solution Approach 1:
The patent changes the processing parameters from conventional high-pressure molding to low-pressure forming methods, and controls the drying parameters to prevent collapse of the nanoporous structure. By carefully controlling pressure, temperature, and humidity parameters during processing, the material maintains both mechanical stability in composite form and high surface area/porosity characteristics.
Solution Approach 2:
The patent creates a composite material system where crystalline hybrid nanoporous material is combined with a binder or matrix material. This composite structure provides mechanical stability and shape retention while preserving the nanoporous characteristics of the active material, resolving the contradiction between structural integrity and surface area maintenance.
2Stability of the object's composition
If crystalline hybrid nanoporous material is subjected to high temperature treatment, then shape stability is improved, but thermal sensitivity causes structural degradation
Solution Approach 1:
The patent modifies the temperature parameter from conventional high-temperature processing to low-temperature processing suitable for thermally sensitive materials. By implementing temperature control within a range that prevents thermal degradation while still achieving shape stabilization, the material maintains its structural integrity and nanoporous characteristics.
Solution Approach 2:
The patent replaces thermal processing methods with alternative mechanisms such as chemical crosslinking, solvent evaporation, or mechanical forming followed by gentle drying. These non-thermal or low-thermal methods achieve shape stabilization without exposing the material to harmful high temperatures that would cause structural degradation.
3Strength
If crystalline hybrid nanoporous material is compacted or extruded, then density and mechanical strength are improved, but nanopore structure collapses reducing adsorption capability
Solution Approach 1:
The patent changes the pressure parameter from high-pressure compaction to low-pressure or pressure-free forming methods. By implementing gentle handling and forming processes that avoid excessive mechanical stress, the nanopore structure remains intact while still achieving adequate mechanical strength for practical applications.
Solution Approach 2:
The patent introduces a binder, matrix material, or support structure as an intermediary that provides mechanical strength to the composite. This intermediary material bears the mechanical load, allowing the crystalline hybrid nanoporous material to maintain its open nanopore structure and adsorption capability without requiring high-pressure compaction.
4Ease of operation
If crystalline hybrid nanoporous material is processed into composite form, then ease of handling and application is improved, but active surface area is reduced
Solution Approach 1:
The patent applies local quality by concentrating the active crystalline hybrid nanoporous material in regions where adsorption functionality is needed, while using binder or matrix materials in regions primarily for structural support. This spatial differentiation allows the active material to maintain high surface area exposure while the composite structure provides ease of handling.
Solution Approach 2:
The patent designs a composite structure where the crystalline hybrid nanoporous material is distributed within or on the surface of a support matrix. This configuration provides the ease of handling associated with composite forms while maximizing the exposure and accessibility of the active surface area for adsorption applications.
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 effectively maintains the surface area and porosity of the nanoporous material, enhancing its mechanical stability and hydrothermal stability, allowing for diverse applications such as catalysts, adsorbents, and ion exchange materials while minimizing the reduction of active surface areas.
Implementation Method 1
A method involving the use of organic polymeric and optional inorganic additives to create a composite with a spherical or egg shape, where the crystalline hybrid nanoporous material powder is mixed with solvents and additives
Implementation Method 2
followed by heat treatment or other treatments to remove solvents, preserving the material's surface area and porosity
Data Source
Figure 1(a)~1(b)
Figure 2~3
Figure 4a
AI summary
The present invention relates to a composite and a method for manufacturing same, the composite comprising: at least one crystalline hybrid nanoporous material powder, at least one organic polymeric additive and at least one optional inorganic additive; wherein said crystalline hybrid nanoporous material is prepared by coordinating at least one organic ligand and at least one optional anionic ligand to or with a metal ion or a metal ion cluster to which oxygen is bonded; wherein the composite has a spherical or pseudo-spherical shape and a size of 0.1 ∼ 100 mm; that the total void volume of the voids is at least 5 % by volume based on the sum of the total pore volume of the nanopores having a size of 10 nm or smaller in the composite and the total void volume of the voids having a size of 0.1 µm or larger in the composite; and that the specific surface area per weight (m2/g) of the composite is at least 83% based on the specific surface area per weight (m2/g) of the nanoporous material powder.