Molecular Sieve Catalysts TRIZ Cases
- Unblocking SCR Catalyst Pores via Liquid Soak and Steam
Liquid soak and steam vaporization restore zeolite pore access, recovering NOx conversion efficiency without muffler replacement.
- Particulate Bed Pressure Drop in Flue Gas Streams
Replacing erosion-prone orifice grids with disposable particulate beds eliminates plugging and vibration while maintaining reliable pressure reduction.
- Modified Na-MOR Catalyst for Dimethyl Ether Carbonylation
Modified Na-MOR catalyst with tetraalkyl ammonium exchange resolves activity stability trade-off, achieving 8000 hour lifetime.
- Copper Boron Rare Earth Catalyst for HCl Oxidation
Two-step impregnated composite catalyst stabilizes copper against high-temperature loss to increase chlorine yield from hydrogen chloride oxidation.
- Catalytic Reaction Process Water Level Control
A catalytic reaction system adjusts reactor water levels to optimize catalyst performance.
- Rapid Synthesis of Small-Crystal-Grain ZSM-5 Molecular Sieve
A rapid synthesis method produces small-crystal-grain ZSM-5 molecular sieves using low-temperature nucleation and high-temperature crystallization growth.
- Oxidized Disulfide Oil Peptization Agent for Solid Catalyst
Oxidized disulfide oil compounds replace conventional acids as peptization agents to form solid catalyst particles with comparable strength.
- Copper-Exchanged Chabazite SCR Catalyst for Diesel NOx Reduction
A copper-exchanged chabazite molecular sieve catalyst enables selective nitrogen oxide reduction in diesel exhaust systems.
- Two-Stage Hydroisomerization for High VI Lube Base Oils
Segmented catalyst stages optimize branching to improve low temperature properties while maintaining yield of high viscosity index lube base oils.
- Titanium-Silicalite Synthesis via Acetylacetone Kinetic Control
A titanium-silicalite molecular sieve synthesis method uses acetylacetone to regulate hydrolysis kinetics and maintain optimal titanium-oxygen-silicon bonding.
- AEI Zeolite Metal Incorporation via Framework Conversion
Hydrothermal conversion of zeolitic material to AEI framework type incorporating transition metal M.
- Tantalum Catalyst on Acid-Washed Silica for Butadiene Selectivity
Acid-washing mesoporous silica supports optimizes tantalum distribution, reducing by-product formation during ethanol to butadiene conversion.
- Mesoporous Zeolites with Transition Metals for Reactant Accessibility
Mesoporous zeolites disperse transition metals throughout the microporous framework to enhance catalytic activity and stability.
- SCR Catalyst Converter Segmentation for NOx Purification
Segmented SCR catalyst converters with oxidation intermediaries reduce catalyst poisoning and maintain high NOx purification efficiency at low temperatures.
- Phosphorus-Modified RE Y-Type Molecular Sieve Preparation
A phosphorus-modified rare earth Y-type molecular sieve uses ion exchange to locate ions in sodalite cages.
- Mullite Molded Body Firing Process
Pre-sintered mullite particles bond during firing to maintain structural integrity while reducing energy consumption and production time.
- MTG Process Upgrading C3-C4 Paraffins to Aromatics
An upgrading reactor converts C3-C4 paraffins into aromatics within a methanol-to-gasoline process.
- Amorphous Cobalt-Silicon Oxide Catalyst for PMS Activation
Amorphous Co-SiOx catalyst activates peroxymonosulfate through octahedral cobalt sites to degrade organic pollutants.
- Dual Reactor Alkylation Yield via Purge and Transfer
Purging residual hydrogen and olefins before mode switching prevents side reactions that reduce alkylate yield.
- Wall-Flow Filter Sintered Coating for Exhaust Gas Filtration
Sintered oxide coatings on wall-flow filters resist liquid water and minimize exhaust-gas back pressure.
- Pre-loaded Platinum Molecular Sieve Catalysts for Biodiesel
Pre-loaded platinum molecular sieves increase diesel fuel yield and reduce cracking in hydroisomerization.
- Iridium Catalyst Complex for Alkane Dehydrogenation Selectivity
A Group 9 iridium catalyst complex with a ketone cocatalyst drives alkane dehydrogenation to generate olefins efficiently.
- CHA Zeolite Cu-Ce Molar Ratios for Heat Endurance
Specific Cu/Al and Ce/Al molar ratios in CHA zeolite prevent ammonia oxidation, maintaining NOx purification rates after thermal stress.
- Fluidized Bed Reactor for Carbohydrate Valorization
Metal catalysts in fluidized bed reactors convert carbohydrates to organic acids while preventing caramelization.
- MCM-22 Molecular Sieve Catalyst for Selective Alkylation
Reducing MCM-22 crystal agglomerate sizes below 16 microns improves monoalkylated aromatic compound selectivity by minimizing polyalkylated impurities.
- Catalytic Fluidized Bed Naphtha Reforming Process
A catalytic fluidized bed reactor converts olefinic naphtha and light paraffins into high-octane reformate using a zeolite catalyst.
- Catalyst Article Forming via Plastic Mixture
Molding a high-solid plastic mixture of molecular sieves and insoluble metal precursors into shaped articles.
- Polyethylene Resin Composition for Moldability and Impact Strength
Blending narrow and broad molecular weight distribution polyethylenes balances moldability, impact strength, and transparency in thin-walled products.
- Alpha-Hydroxycarboxylic Acid Ester Synthesis Using Boric Acid Catalyst
Boric acid catalysts replace corrosive mineral acids to reduce equipment corrosion and wastewater complexity while maintaining esterification efficiency.
- Hydroisomerization Catalyst for Lubricant Base Oil Dewaxing
A hydroisomerization catalyst with a calcined zeolite support converts normal paraffins to isoparaffins.
- Zeolite X Synthesis via Seeding and High Temperature
Adding seeding agents allows zeolite X synthesis above 120°C, eliminating impurity phases while reducing duration.
- Tunable Mesoporous BEA Zeolite Synthesis via Dual Organosilane Templates
Combining distinct organosilane templates tunes mesoporous BEA zeolite pore widths continuously, overcoming discrete template limitations.
- Nitrogen Metallophosphate Catalyst for Biodiesel Transesterification
Nitrogen metallophosphate catalysts enable biodiesel production from free fatty acid feeds without costly glycerin purification.
- LTL Zeolite Spherical Crystallites via FAU Conversion
Hydrothermal conversion of FAU zeolites yields spherical LTL crystallites that reduce diffusion limitations and enhance catalyst activity.
- Slurry-Based Bifunctional Catalyst for Syngas Conversion
Slurry processing creates homogeneous bifunctional catalysts that mitigate segregation and reduce deactivation during syngas to dimethyl ether conversion.
- Vanadium Catalyst for Halogenated Nitrile Ammoxidation
A vanadium-based catalyst with specific XRD peaks enables high conversion in halogenated aromatic nitrile production.
- Artificial Zeolites via Atomic Layer Deposition
Atomic layer deposition deposits silicon-oxygen species onto amorphous silica-alumina to decouple pore size from acidity for biomass conversion.
- Alkyl Halide Conversion to Olefins via Zeolite Catalyst
Steamed zeolite catalysts convert alkyl halides into ethylene and propylene while suppressing aromatics and coke formation.
- Framework-Substituted USY Zeolite for Paraffinic Naphtha Dehydrogenation
Metal-substituted USY zeolites boost olefin yield and selectivity, resolving the contradiction between high productivity and low conversion efficiency.
- Chabazite Zeolite Catalyst with Copper and Alkali Earth Metal
A chabazite-type zeolite catalyst incorporates copper and alkali earth metal ions to establish active catalytic centers for exhaust treatment.
- Pre-hydrocarbon Pooling Catalyst Treatment for MTO Reactor Hot Spots
A pre-hydrocarbon pooling device treats regenerated catalyst to form active species before conversion.
- Ce-Based Mixed Oxide Catalyst for NOx Reduction
Cerium-tungsten composite catalysts expand the operational temperature window and resist sulfur poisoning.
- Cerium Zirconium Oxide Catalyst for Low-Temperature Ammonia Decomposition
Self-heating cerium zirconium catalyst eliminates external heating requirements by generating oxidation heat during ammonia decomposition.
- Micro-spherical Iron Catalyst for Fischer-Tropsch Slurry Bed
A micro-spherical iron-based catalyst with modified structure promoters enhances mechanical strength and hydrocarbon selectivity.
- Composite Catalyst for Methane Dehydro-aromatization
A composite catalyst disperses nickel oxide within a transition metal oxide support to enhance catalytic activity.
- Exhaust Gas Catalyst Barrier Particles Prevent Aggregation
Barrier particles prevent transition metal oxide aggregation during heat treatment, maintaining low-temperature purifying efficiency.
- Amphiphilic Molecular Sieve with Lipophilic Exterior and Hydrophilic Interior
Nano-ZSM-5 molecular sieve modified with organosilanes to create an amphiphilic structure with lipophilic exterior and hydrophilic interior.
- SSZ-92 Catalyst for Base Oil Dewaxing Yield
SSZ-92 molecular sieve catalyst suppresses cracking loss during dewaxing to improve base oil yield and quality.
- Ketone Hydrogenation to Olefins via Bifunctional Catalyst
A bifunctional catalyst system converts ketones directly into olefins through integrated hydrogenation and dehydration steps.
- CHA Zeolite Synthesis with Cycloalkylammonium Templates
Replacing adamantane templates with cycloalkylammonium agents cuts synthesis costs while maintaining reliable CHA framework formation.