Molecular Sieve Catalysts TRIZ Cases

Hybrid binary catalysts combine metal oxide nanoparticles with metal zeolites to decompose urea deposits and reduce NOx emissions.

Ceramic pre-coating prevents cracking in non-woven fibrous honeycomb catalysts, maintaining structural integrity for exhaust treatment.

A porous solid acid catalyst converts hydrocarbon feeds into light olefins through pillaring and solid state reactions.

A zeolite-based SCR catalyst system reduces nitrogen oxides in boiler exhaust streams using ammonia as a reducing agent.

A process converts syngas to ethanol using a multi-component catalyst system and recycles dimethyl ether.

A monolithic catalyst uses a mesoporous silica SBA-16 membrane to increase catalytic activity.

Adding silicon during curing limits crystal growth below 100 nm while maintaining high Si/Al ratios for catalytic activity.

A dual phase catalyst system combines water-soluble and solid acid catalysts to hydrate mixed olefins into alcohols.

Optimizing the alkaline cation to aluminum ratio in a modified zeolite improves middle distillate selectivity while maintaining high catalytic activity.

In situ SAPO-34 growth on ZSM-5 extends catalyst lifetime and improves C2/C3 olefin selectivity during methanol conversion.

Acid-catalyzed dehydration eliminates hydrogen use, lowering operational costs and greenhouse gas emissions.

MEL or MFI-type zeolite seeds induce spontaneous formation of interconnected nanosheets, eliminating organic templates and boosting catalytic yields.

Steam-treated phosphorus ZSM-5 additives resolve contradictions between catalyst stability and productivity, yielding high light olefin concentrations.

Composite silica-alumina and silicalite-1 catalyst achieves high MTBE conversion while suppressing dimethyl ether by-product generation.

Zeolite catalysts convert alcohols to olefins while suppressing aromatic byproducts through framework tuning.

Segmented SSZ-91 and SSZ-95 catalysts reduce unwanted cracking during dewaxing, increasing base oil yield while maintaining viscosity index.

Hydrothermal synthesis of copper-loaded AFX zeolites improves NOx conversion efficiency and hydrothermal stability.

Supported heteropolyacid catalysts depolymerize polypropylene and polyethylene mixtures, minimizing residual high-molecular-weight fractions.

A beta zeolite catalyst with group VIB metals and cocatalysts converts polyaromatic hydrocarbons into BTEX mixtures.

Optimized molar ratios boost carbon monoxide conversion while reducing gas circulation costs.

A metal complex catalyzes selective oxidation of inert sp3 C-H bonds using hydrogen peroxide.

LTA zeolite catalysts containing extra-framework iron or manganese enhance catalytic activity for exhaust gas treatment.

A new crystalline molecular sieve designated SSZ-81 is synthesized using specific structure directing agents to achieve unique pore architectures.

A mordenite zeolite synthesized without organic structure-directing agents using controlled divalent metal ion ratios.

An integrated catalyst system combines a three-way catalyst with a molecular sieve to treat exhaust pollutants in natural gas vehicles.

Dual metal modifiers on a zeolite support convert hydrocarbons to aromatics while suppressing light gas formation.

A solidothermal process synthesizes boron-containing zeolites with an MWW framework structure using cycloalkylamine templates and seed crystals.

Optimizing alpha chromia content balances chemical robustness with physical handling, reducing undesirable by-products in R125 production.

Loading an inorganic acid into the accumulation space of heteropoly compound anions increases acid sites density and homogenizes acid strength distribution.

Low density catalysts reduce reactor volume requirements, lowering operating temperatures and extending lifespan.

A one-step synthesis method produces high silica zeolites using inorganic gels without organic structure-directing agents.

Sulfurized molybdenum catalyst limits decarboxylation to reduce carbon oxide formation and hydrogen consumption while lowering boiling points.

Phosphate-modified zeolites achieve high conversion while suppressing acetaldehyde byproduct formation.

Organic-free synthesis of sodium zeolites using controlled silicon and aluminum ratios to form phase pure crystals.

Segmented alkylation with light olefins reduces benzene content while preventing heavy non-blendable component formation.

Metakaolin-derived zeolite catalysts improve polyaromatic cracking conversion by increasing surface area and pore volume.

Ammonia mediates solid state ion exchange to activate copper-exchanged SAPO catalysts at low temperatures, preventing material damage from high heat.

A method introduces mesoporosity into aluminosilicate zeolites to deposit iron species homogeneously.

Inorganic binder particles provide mechanical stability for extrudable zeolite catalyst compositions.

Titanium oxide composition decomposes odors while preventing re-emission through hydrophobic zeolite integration.

A porous inorganic framework coated with a layered double hydroxide shell serves as a catalyst support for ethylene polymerization.

Replacing zeolite with aluminophosphate prevents silicon migration during hydrothermal durability treatment.

Composite zeolite catalysts resolve contradictions between product quality and process complexity to increase ethylene and propylene yields above 30 percent.

Lithium doping modifies boron-beta zeolite acid sites to boost amine conversion while extending catalyst service life.

A zeolitic catalyst converts ethylene oxide to monoethanolamine in the gas phase, avoiding high-pressure liquid systems and costly apparatus.

Removing acetaldehyde and 1,1-dimethoxyethane from methyl acetate feedstock prevents catalyst deactivation, extending Brønsted acid lifetime.

High nanopore volume amorphous silica-alumina base overcomes limited hydrogen solubility in heavy feedstocks, boosting yield and quality.