Molecular Sieve Catalysts TRIZ Cases

Optimized CHA zeolite particle size reduces water absorption displacement in exhaust catalysts.

A dehydroaromatization catalyst composition containing platinum and gallium promoters on an aluminosilicate support.

Multifunctional catalyst integrates palladium oxidation with zeolitic SCR to reduce hydrocarbon slip, preventing coking in close-coupled exhaust systems.

Sulfur oxide reagents on porous supports enable selective ethane conversion to ethylene while minimizing COx and coke formation in fluidized bed reactors.

Uses 1,2,3-trimethylimidazolium cations to direct crystallization of SZR molecular sieves, eliminating needle-like morphologies that cause health concerns.

Temperature swing regeneration with heated CO2 reduces energy consumption and solvent waste in ethanol dehydration systems.

Composite catalyst support balances conversion and desulfurization activity by controlling crystalline aluminosilicate content and intermediate mesopore volume.

Gas-phase carbonylation with zeolite catalysts eliminates halide corrosion and separation difficulties while maintaining high space-time yields.

Wet pulverizing zeolite crystals in a silica unsaturated alkali solution prevents seed crystal aggregation during hermetic heating to produce smaller particles.

Acid-catalyzed condensation converts biomass diols into polyether fuel additives, avoiding hydrogen consumption and high temperatures.

Silane coupling agents bind refractory powder to porous substrates, resolving water tolerance and adhesion issues during exhaust gas treatment.

Porous partition walls with 50% macro pore area balance high catalyst loading against thermal shock resistance.

Segmented stripper zones remove residual hydrocarbons at high temperature, preventing downstream equipment damage from incomplete stripping.

SSZ-107 synthesis via parameter changes resolves selectivity versus complexity trade-offs in gas separation applications.

Active component carrier composition deposits catalytically active components onto support materials using oxidized disulfide oil compounds.

A selectivated catalyst uses organo-silicate to enhance reaction selectivity toward single-ring aromatic hydrocarbons.

Hydroxyl compounds mediate dimethyl ether carbonylation with zeolite catalysts to produce methyl acetate.

Hydrocracking catalyst with controlled USY zeolite acidity and surface area enhances middle distillate production activity.

A hydrocracking catalyst uses zeolite Y with a lattice parameter below 24.40 Å to boost naphtha cut selectivity.

A three-step activation process enhances hydroalkylation catalyst activity through sequential hydrogen treatments at controlled temperatures.

Supercritical carbon dioxide extracts surface hydrocarbons, reducing energy consumption and preventing coke formation during regeneration.

Non-aqueous impregnation preserves acid sites in SM-7 catalysts, boosting hydroisomerization selectivity.

Spray drying merges multiple preparation steps into one operation, reducing energy consumption and process complexity for Fischer-Tropsch synthesis.

Group 6 and 7 oxide catalysts convert biomass to 3-hydroxytetrahydrofuran, reducing environmental impact while maintaining production efficiency.

Embedding zeolite crystals in a silica-alumina matrix minimizes cobalt oxidation and deactivation while maintaining high CO conversion rates.

A catalytic system combining ethanol dehydration and oxy-ketonization to produce light olefins.

Optimized SiO2/Al2O3 ratio and particle size resolve low-temperature NOx reduction trade-offs.

A hybrid catalyst converts synthesis gas to liquid hydrocarbons with reduced olefins, eliminating separate reactors for wax hydrocracking.

Ammonium hexafluorosilicate extracts external acid sites from MWW zeolites, preventing para-xylene isomerization and boosting yield ratios.

A dual catalyst system with distinct molecular sieve pore sizes enables hydroisomerization of waxy feeds at low hydrogen partial pressures.

Large crystallite aluminosilicate zeolites reduce hydrocarbon blocking of active sites while maintaining NOx conversion efficiency.

Platinum loaded copper silver mordenite catalyst resolves water inhibition during dimethyl ether carbonylation.

Selective hydrogen combustion converts byproduct hydrogen to water, shifting equilibrium to increase aromatic yield and manage heat.

Mesoporous Zr-SBA-15 catalyst overcomes aqueous stability limits by combining Lewis and Brønsted acid sites with deep eutectic solvents.

Increasing the silicon-to-aluminum ratio in SUZ-4 zeolite extends catalyst lifespan by reducing irreversible damage during continuous oxygenate conversion.

Depth-dependent silica to alumina ratios in aluminosilicate zeolite crystals enhance hydrothermal stability and catalytic activity.

Synthesizing ZSM-5 molecular sieves using combined organic amine and alcohol templates.

A two-stage conversion process upgrades light olefins to liquid fuels using sequential zeolite catalysis.

Framework modification and pore forming agent treatment produce mesoporous zeolites with higher aluminum content.

An oxygen storage material buffers rich exhaust conditions, preventing molecular sieve deactivation and sustaining NOx storage efficiency.

Germanium oxide modifies zeolite crystallization to produce nano-sized crystals with controlled morphology.

A molecular sieve catalyst composition combines over-flocculated zeolite particles with a phosphorous compound to enhance structural integrity.

Zeolite X adsorbents with optimized barium, strontium, potassium, and sodium ratios resolve binder inertness contradictions to maximize para-xylene purity.

Mixed isomeric dimethylpiperidine directing agents crystallize SSZ-39 zeolite, enabling universal synthesis across varying Si/Al ratios.

Optimizing acid and ligand molar ratios reduces corrosion and ligand degradation while maintaining reaction rates.

Split naphtha into C7- and C8+ streams processed in parallel reformers to increase aromatics yield.