Molecular Sieve Catalysts TRIZ Cases

Composite zeolite beta catalysts shift reaction equilibrium via dealkylation to increase xylene yield from heavy reformate.

Zeolite catalysis converts unsaturated fatty acids into saturated branched chain fatty acids, reducing dimer formation and labor-intensive purification.

Recycling regenerant effluent through the alkylation reactor cuts fresh benzene requirements and energy consumption while maintaining catalyst effectiveness.

Bimetallic SSZ-91 catalyst reduces base oil aromatics content by at least 1.5 wt.% while maintaining product yield.

Recovering residual liquid from zeolite-Y synthesis as a recycled precursor boosts yield while maintaining stoichiometric balance.

Heated n-hexane dissolves reaction residues from solid acid catalysts, avoiding channel damage caused by carbon burning and extending single-pass lifetime.

Composite zeolite catalyst minimizes skeletal isomerization during benzene alkylation, maintaining high 2-phenyl content and extending operational life.

Hydrothermal conversion of FAU precursors creates high-proportion AFX-BEA composites to resolve performance gaps in gas purification applications.

Replacing polymeric resin with a crystalline zeolite structure prevents leaching and ensures accurate PET scanner calibration.

Rotating micro liquid membrane reactor eliminates aging steps to achieve uniform particle size and developed pore structure in ZSM-5 molecular sieves.

Synthesizing SSZ-100 molecular sieve using cationic nitrogen-containing organic compounds as structure directing agents.

An internal riser in a fluidized reactor enables small catalyst circulation, reducing pressure drop and improving diffusion efficiency for difficult feeds.

A zeolite NaX catalyst modified with sodium phosphate creates active sites for toluene side-chain alkylation.

Segmented PNA and SCR zones store NOx at low temperatures, resolving cold start conversion inefficiency.

Heating parent zeolite beta with aqueous metal hydroxide creates mesopores while preserving crystallinity and acidity for improved catalytic efficiency.

Hierarchical EU-2 zeolites combine micropores and mesopores to enhance hydroisomerization activity while simplifying synthesis and reducing material loss.

Solid catalyst component with asymmetrical phthalic diester suppresses initial burst reaction to prevent particle breakage and fine powder generation.

5-Azaindolium cations direct BOG framework crystallization, achieving short times and high surface areas without complex multi-step procedures.

A zeolite hydrocarbon trap catalyst adsorbs exhaust gases using transition metals to enhance desorption performance.

Titanium phosphorus catalyst mixture achieves high intrinsic viscosity and neutral color in polyester melts, eliminating solid-state postcondensation.

Small crystal acidic FAU molecular sieves enable mono-alkylated aromatic production at reduced benzene to olefin ratios.

Segmented iron and copper zeolite zones broaden the operating temperature window, enabling high nitrogen oxide conversion below 350°C without ammonia oxidation.

Segmented synthesis of mordenite zeolite resolves the trade-off between process complexity and particle size uniformity to enhance catalytic activity.

Phosphorus-modified zeolite catalyst maintains ethylene selectivity and stability during ethanol dehydration at varying space velocities.

An alkaline aqueous reaction dispersion with an aluminum complexing agent promotes in-situ crystallization of aluminosilicate zeolite layers on metallic substrates.

A modified Y molecular sieve with a high silica-alumina surface layer resolves the trade-off between nitrogen tolerance and hydrocracking activity.

A binder-free zeolite ZSM-5 granulation process using hydrothermal crystallization of amorphous sodium aluminosilicate gel.

A hydrocracking catalyst combines zeolite beta with controlled acidity and domain size alongside zeolite USY to improve reaction activity.

A fibrous IM-5 molecular sieve uses a cationic surfactant to optimize crystal morphology during hydrothermal crystallization.

Atomically dispersed platinum group metal complexes stabilize active sites on metal oxide supports.

Composite catalyst merges dehydration, oligomerization, and isomerization steps to eliminate multi-stage processing complexity.

Optimizing aluminum coordination and mesopore surface area in SM-7 synthesis prevents coagulation, improving Fischer-Tropsch wax hydroisomerization yield.

Agglomerated zeolite catalyst extends water content in cement slurry, maintaining compressive strength while preventing formation fracture and fluid migration.

Hybrid polymer coating deposits on zeolite external surfaces to reduce surface acidity and enhance para-alkyl selectivation.

Synthesizing iron-promoted AEI zeolites with minimal alkali content enhances hydrothermal stability and NOx reduction selectivity in SCR applications.

Direct hydrothermal synthesis encapsulates platinum in ZSM-11 zeolite, boosting BTX selectivity by 23% and overcoming diffusion limits.

Transition metal zeolite catalysts enable primary amine production via shape selectivity, reducing energy consumption and by-product formation.

Rare earth modified zeolite resists coke formation and pore plugging, extending catalyst age beyond 2.5 while maintaining high olefin conversion.

A suspended-bed hydrogenation catalyst employs a composite support to increase light oil yield and extend catalyst service life.

A single catalyst wash coat containing soot combustion and SCR components coats filter partition walls to unify multifunctional activity.

Replacing toxic tetraalkylammonium agents with choline and cycloalkylammonium compounds cuts synthesis costs while maintaining framework reliability.

A sulfated titania support anchors a platinum-palladium alloy to sustain ammonia decomposition activity in steam-rich exhaust streams.

An oxide layer on metal-exchanged SAPO-34 improves hydrothermal stability and low temperature performance, reducing washcoat loading costs.

Reducing benzene to propylene molar ratios and effluent recycle streams minimizes polyalkylated byproducts, achieving high cumene selectivity.

A dual zeolite catalyst system combines ZSM-12 and EU-2 or ZSM-48 sections to process hydrocarbon feedstocks.

A ferrosilicate catalyst with an isolated iron beta-framework structure enables selective nitrogen oxide reduction using ammonia or urea.

Hierarchical amine-modified zeolites immobilize nickel nanoparticles, expanding pore accessibility for large reactant molecules in petrochemical catalysis.