Molecular Sieve Catalysts TRIZ Cases

Two-stage heating and additives resolve mesopore uniformity trade-offs in zeolite-Y synthesis.

Flat profile zoned catalyst composites utilize shear thinning washcoats to deposit uniform catalytic layers on monolithic carriers.

A hydrocarbon trap and NOx trap combination manages exhaust gas flow for emission control.

Bifunctional Pt/MCM-41 catalyst converts biomass chemicals into long-chain hydrocarbons in a single continuous reaction step.

Partially neutralized zeolite catalysts process C2 to C10 alkenes into diesel-range hydrocarbons, extending catalyst lifetime and improving selectivity.

Base-leaching treatments create mesopores in the zeolite structure, reducing coking deposition and increasing aromatic hydrocarbon yields.

Quench zones inject hydrogen and hydrocarbon gas mixtures to control temperature and molar ratios, reducing reactor volume and preventing catalyst deactivation.

Impregnating a zeolitic molecular sieve support with a dispersion agent enhances heteroatom removal and cold flow properties in sour environments.

Base and acid wash treatments modify ZSM-5 catalyst surfaces to resist coke formation, extending continuous operation beyond ten days.

Adding reformer distillates with 98% aromatics absorbs hydrogen gas, resolving positive gassing tendency while maintaining oxidative stability.

A chromium nitride oxynitride catalyst decomposes organic peroxides into alcohols and ketones.

Palladium-doped hydrogen-ZSM-5 adsorbs ethylene and formaldehyde at ambient temperatures, resolving inefficiency of heated catalysts in humid storage.

A unified catalyst bed performs hydrocracking and catalytic dewaxing simultaneously to produce diesel and lubricant basestocks.

Surface modification of inorganic carriers with specific functional groups enhances metal dispersion and hydrogenation performance.

Zirconia and alumina reinforce the mesoporous cobalt framework, preventing collapse under high temperature reduction while sustaining catalytic activity.

Colloidal aluminosilicate crystallizes with novel cyclic nitrogen-containing cations to form CHA-type molecular sieves.

Desilicated zeolite catalyst with controlled silica-alumina ratio isomerizes 2,4-dichlorophenol to 2,5-dichlorophenol.

A Cu-Zn catalyst on zeolite reacts benzene and acetone directly to produce cumene with high selectivity.

Oxalate derived molybdenum zinc catalyst boosts methane conversion and benzene selectivity while resisting coke deactivation.

Organotemplate-free BEA zeolite synthesis improves conversion activity and selectivity during ethylene and furan Diels-Alder reactions.

Steam gasification removes coke from deactivated methanol-to-olefin catalysts, preventing temperature runaway and boosting light olefin selectivity.

Segmenting Fischer-Tropsch and hydrocracking zones within one tube eliminates complex separation schemes while managing exothermic heat.

Using low water solubility alumina sources during synthesis maintains phase purity while achieving high acid activity in aluminum-rich ZSM-48.

Composite zeolite and nickel molybdenum tungsten oxide binder maintain hydrothermal stability during steam exposure.

A chromium catalyst composition uses hydrophobic silica to improve dispersion.

Preliminary drying of zeolite Y slurry removes surfactant carbon, eliminating explosion risks during air calcination and reducing CAPEX.

Alkaline-treated zeolites improve diesel-range selectivity and extend catalyst lifetime by reducing branching.

ZSM-48 crystals with controlled morphology enhance catalytic activity and yield during lubricant base stock production.

Spray drying titanium MWW zeolite mother liquor eliminates filtration steps and shortens crystallization time.

Organotemplate-free zeolite beta catalyst enables cumene production via benzene alkylation at lower reactor inlet temperatures.

Alkaline treatment introduces mesoporosity into zeolite crystallites, reducing coking blockage and maintaining catalytic activity.

Optimized H-type beta zeolite replaces liquid acids, eliminating complex separation while maintaining high isosorbide yield.

Synthesizing SSZ-101 with N-cyclohexylmethyl-N-ethylpiperidinium overcomes low selectivity in existing sieves by enabling novel pore architectures.

Tin-containing MWW zeolite catalyzes carbonyl oxidation with hydrogen peroxide, resolving low selectivity and complex synthesis found in beta zeolites.

Dissolving hydrogen in the liquid feed eliminates gas-solid interfaces that deactivate catalysts, maintaining productivity during heavy aromatic processing.

A seeded-MCM-56 catalyst composition with a controlled binder ratio facilitates benzene alkylation.

IZM-2 zeolite catalyst improves cold resistance while limiting light cracked product yield loss.

Plasma-created composite nanoparticles in alumina-silica-titania washcoats reduce platinum group metal usage while maintaining NOx conversion rates.

Encapsulated hydrogen activation metal clusters within structurally collapsed zeolite matrices enable high hydroprocessing activity.

Composite mordenite and ZSM-5 zeolites overcome equilibrium constraints in heavy reformate conversion, increasing para-xylene yield.

BEA catalyst converts methanol to high-octane fuel, reducing emissions.

Ferrierite zeolite supported transition metals convert methoxylated aromatics without H2S, solving solvent instability and high cost.

Layered pentasil zeolites with controlled silica-alumina ratios enhance external surface area for catalytic applications.

A bulk CoMoNb catalyst removes sulfur and nitrogen contaminants from diesel feedstreams through direct catalytic action.

Basic solution forms palladium and gold particles on alumina supports, eliminating hazardous reducing agents like sodium borohydride.