Nitrous Oxide Capture TRIZ Cases
- Exhaust Catalyst N2O Suppression via Cu-CHA Zeolite
A catalyst layer merges Cu-CHA zeolite with iron-supporting metal oxide particles to decompose nitrous oxide.
- Iron-Promoted Zeolite Catalyst for SCR NOx Conversion
Segmented ion exchange raises iron content to boost low-temperature NOx conversion while maintaining hydrothermal stability.
- Zoned Catalyst System for Reducing N2O Emissions
Segmenting the catalyst into rhodium and palladium zones reduces N2O formation during vehicle acceleration.
- Copper-zeolite SCR Catalyst NOx Reduction Sulfur Poisoning
Platinum oxidation catalyst passively converts nitrogen monoxide to nitrogen dioxide, sustaining copper-zeolite SCR activity against sulfur poisoning.
- Bimetallic Cu/Mn Molecular Sieve Catalyst for SCR
Exchanged copper and manganese sites within the molecular sieve suppress N2O production while maintaining high NOx conversion rates.
- Zeolite Honeycomb Catalyst Fabrication via Pseudo-boehmite Peptization
Optimized pseudo-boehmite gelatinization resolves the trade-off between specific surface area and physical strength in zeolite honeycomb catalysts.
- Exhaust Gas Mixer for Reducing Agent Distribution
An exhaust gas mixer prevents injection cone buildup by directing gas along the inner surface, ensuring uniform reducing agent distribution.
- High-Silica AFX Zeolite Synthesis via Adamantyl Cations
Synthesizing high-silica AFX zeolites with adamantyl cations overcomes phase purity limits at SiO2/Al2O3 ratios above 50.
- Ruthenium Catalyst for Low-Temp Hydrocarbon Oxidation
Ruthenium supported on refractory oxide oxidizes short-chain hydrocarbons at low temperatures, reducing methane slip and nitrous oxide formation.
- Electrochemical Metal Hydroxide Generation via Silicate Dissolution
An electrochemical system generates metal hydroxide by dissolving abundant metal silicates in an acidic electrolyte loop.
- Segmented Pd-Pt Oxidation Catalyst for Diesel N2O Reduction
A segmented oxidation catalyst uses palladium on cerium oxide and platinum to oxidize exhaust gases at low temperatures.
- PdO/Co3O4 Catalyst Direct NOx Decomposition
PdO dispersed on Co3O4 spinel oxide decomposes NOx to N2 at 400-650°C, eliminating reductant dependency and fuel efficiency penalties.
- MOF Heterolites Ordered Superlattices Self-Assembly
MOF heterolites form ordered superlattices via surfactant-directed self-assembly of nanocrystals.
- Ceria-Alumina Catalyst Support for Low-Temperature NO Oxidation
A ceria-alumina support with platinum and palladium oxidizes nitric oxide to nitrogen dioxide at low temperatures.
- Regenerative Afterburner SCR Catalyst Temperature Control
Segmented regenerators stabilize SCR catalyst temperature, reducing mechanical stress and energy consumption during exhaust purification.
- Catalytic Configuration Diagnosis via Temperature Cycling
A catalytic configuration diagnosis method adjusts temperature to identify performance degradation causes.
- SCR Catalyst Control via NOx-Ammonia Signal Separation
A closed-loop SCR model separates real NOx and ammonia signals from sensor data for precise reductant dosing.
- NOx Adsorber Catalyst with Holmium Enhancer for Low-Temperature Storage
A NOx adsorber catalyst composition uses holmium or its metal oxide as a storage enhancer to improve low-temperature nitrogen oxide retention.
- N2O Removal System with Sequential Catalyst Layer Valves
Sequential valve control activates fresh catalyst layers as decomposition rates decline, maintaining emission targets while reducing total catalyst volume.
- Zeolite-Encapsulated Bimetallic Clusters via Ligand-Assisted Synthesis
Ligated metal cation precursors anchor to zeolite frameworks, forming uniformly dispersed bimetallic clusters within the crystal pores.
- U-Shaped Exhaust Pipe Prevents Hydrogen Backflow
Segmented U-shaped pipes prevent trace hydrogen backflow into detectors, eliminating false alarms and unnecessary facility shutdowns.
- Dual Grid Catalyst Basket for Ammonia Oxidation
Independent support grids prevent gapping and compression issues, maintaining seal integrity to reduce N2O emissions in nitric acid production.
- Reductant Injector Coolant System for SCR Timing Control
Controller adjusts reductant injection timing based on coolant temperature sensor feedback to reduce NOx slippage and deposit buildup in exhaust systems.
- Ruthenium Catalyst Honeycomb Structure for Nitrous Oxide Decomposition
Honeycomb ruthenium catalysts decompose nitrous oxide efficiently by optimizing packing density and surface area.
- Pt-Pd Diesel Catalyst Two-Layer Washcoat Sulfur Tolerance
A two-layer diesel oxidation catalyst with distinct Pt:Pd ratios resolves sulfur poisoning delays in HC and CO light-off.
- Fuel-Ignition Blend Injection for Low-Temperature HC-SCR NOx Reduction
A fuel and ignition improver blend injects upstream of a hydrocarbon-selective catalytic reduction device to generate active reductant species.
- Regenerative Thermal Oxidizer for N2O Purification
A regenerative thermal oxidizer uses alternating zeolite regenerators to purify gaseous effluents.
- Integrated Air Cleaning System with Microwave Regeneration
An integrated air cleaning system uses sequential adsorption filters and selective microwave radiation to regenerate moisture and pollutant traps.
- Baffle-Integrated Heater for Nitrous Oxide Decomposition
A baffle-integrated heating unit manages gas flow pressure while preheating nitrous oxide for catalytic decomposition.
- H2-SCR Catalyst Zoning for Low-Temperature NOx Reduction
Zoned H2-SCR catalyst coatings enable rapid NOx conversion at cold start temperatures below 150°C, overcoming the efficiency drop of conventional SCR systems.
- Spin Formed Catalyst With Intermediary Mat
A catalyst substrate mat reduces direct contact stress during spin forming.
- In-Cylinder Fuel Dosing for Exhaust Aftertreatment Thermal Management
Valve overlap fuel injection heats the exhaust aftertreatment system, reducing NOx emissions and eliminating reductant dosing complexity.
- Segmented Catalyst Coatings for NOx Reduction and N2O Minimization
Axial segmentation of vanadium oxide and platinum group metal coatings minimizes nitrous oxide formation while maintaining high catalytic activity.