Composite Mesoporous Microporous Material for Tobacco Smoke Filtration
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Solution Overview
Problem
Current filter materials in cigarettes are inadequate for removing gaseous components from tobacco smoke, such as volatile organic compounds, as they primarily focus on particulate and condensable components.
Innovation Solution
Incorporation of a composite mesoporous/microporous material, capable of sorption and catalysis, into cigarette filters or tobacco filler compositions to selectively remove constituents like aldehydes, carbon monoxide, and other harmful gases from tobacco smoke, utilizing zeolites and metals like iron, copper, and palladium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional filter materials (cotton, paper, cellulose, synthetic fibers) are used, then particulate and condensable components are removed effectively, but gaseous components (volatile organic compounds) are not removed
Solution Approach 1:
The patent employs mesoporous silica materials with controlled pore sizes (2-50 nm) that are specifically designed to adsorb gaseous components through their porous structure. The mesoporous material provides high surface area and appropriate pore dimensions for capturing volatile organic compounds while maintaining breathability for smoke flow.
Solution Approach 2:
The invention creates a composite filter structure combining traditional filter materials (cotton, cellulose, synthetic fibers) with mesoporous silica materials. This composite approach integrates the particulate filtration capability of traditional materials with the gas adsorption capability of mesoporous materials, achieving both functions simultaneously.
2Object-affected harmful factors
If filter materials are designed to remove particulate components, then particulate filtration is effective, but gas phase constituents remain in the smoke
Solution Approach 1:
The mesoporous silica material serves multiple functions: it adsorbs gaseous components through its porous structure, provides catalytic activity for decomposing certain compounds, and maintains structural integrity within the filter assembly. This single material addresses multiple harmful factors (gases, volatiles, and potentially particulates) simultaneously, enhancing the versatility of the filtration system.
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 composite mesoporous/microporous material effectively removes at least 30% of targeted constituents from mainstream tobacco smoke, enhancing the filtration capabilities beyond traditional filter materials by incorporating both microporous and mesoporous regions with interconnected channels.
Implementation Method 1
the composite mesoporous/microporous material is capable of removing at least one constituent from tobacco smoke through sorption and/or catalysis
Implementation Method 2
the composite mesoporous/microporous material is capable of removing at least one constituent from tobacco smoke through sorption and/or catalysis
Data Source
AI summary
Cut filler compositions, cigarettes, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of a composite mesoporous/microporous material. The composite material is capable of removing at least one constituent from tobacco smoke, preferably selectively. The composite material may also be used for removing at least one constituent from tobacco smoke through sorption and/or catalysis. The composite material comprises channels interconnecting at least one mesoporous region and at least one microporous region. The mesopores of the composite material may further comprise a carbon lining and/or be further functionalized with a surfactant. Alternatively, the composite material may further comprise a metal, a metal oxide, or mixtures thereof.