Molecular Sieve Catalysts TRIZ Cases

Segmented distributors ensure uniform catalyst distribution while CO2 regeneration moderates burning rates to prevent temperature flying.

Refractory metal oxide support particles with controlled size distributions impregnate platinum group metals to form structured catalyst washcoats.

A slurry composition containing aluminosilicate and copper enables direct formation of Cu-containing zeolite catalysts via hydrothermal treatment.

Organometallic surface modification enhances catalyst durability in diesel exhaust systems.

Segmenting microporous zeolites with mesopores and grafting titanium moieties overcomes limited reactant accessibility in petrochemical conversion.

Grafting hafnium organometallic moieties onto zeolite frameworks via nitrogen linkers overcomes the limited catalytic versatility of conventional materials.

Optimized zeolite catalyst parameters boost ethylene conversion and stability for industrial propylene production.

Oxidized disulfide oil template directs low silica MFI zeolite formation, eliminating analcime impurities from refinery by-products.

A monolith structure attaches catalytic beads to a substrate sheet, forming defined channels for fluid flow.

A hybrid catalyst system co-oligomerizes C2 and C3+ olefins in one reactor, achieving high yield and selectivity without complex recycle loops.

Ammonium salt pH control stabilizes copper deposition on silica supports, resolving fast sintering issues during dimethyl oxalate hydrogenation.

A molecular sieve catalyst composition mixes metal carbonate particles with molecular sieve particles and calcines the mixture to form a composite structure.

Nitric acid treatment replaces costly hydrothermal synthesis, reducing time while enhancing catalytic selectivity.

Promoter-modified solid Brønsted acid catalyst maintains productivity at lower temperatures, preventing hydrocarbon co-production and extending stability.

Morpholine derivatives template coherent zeotype intergrowth, eliminating costly purification steps and organic solvents from synthesis.

A vanadium composite oxide catalyst decomposes sulfur trioxide at reduced temperatures.

Incorporating phosphorus into AEI zeolite pores reduces excessive acid strength, preventing side reactions while maintaining nitrogen oxide reduction activity.

A porous oxide catalyst converts monosilane to disilane at lower temperatures.

Uses specific quaternary ammonium cations to resolve contradictions between crystalline structure quality and consistent composition in SSZ-109 synthesis.

Liquid phase lactic acid dehydration over zeolite catalysts increases space-time yield and catalyst lifetime compared to gas phase methods.

Metallosilicate zeolites with 14-membered rings convert benzene derivatives into monoalkylated products.

Direct synthesis of Al-SSZ-63 zeolite eliminates boron and complex post-treatment steps, simplifying manufacturing while enhancing catalytic efficiency.

Optimizing rhenium oxide loading on ZSM-5 zeolite boosts propylene selectivity, addressing low yields from unmodified catalysts.

A catalyst with nickel on zeolite and cobalt-molybdenum on a matrix enhances hydrocracking yield.

Plasma-deposited nano-on-nano composite nanoparticles bond to carrier particles to maintain high surface area and catalytic activity.

A modified catalyst uses steaming to reduce acid amount and extend cycle life during olefin aromatization.

Porous crystalline aluminosilicate catalyst with optimized crystal and binder ratios drives liquid phase alkylation reactions.

Selectivating a low Constraint Index molecular sieve catalyst suppresses light gas by-products and extends catalyst life during benzene methylation.

Paraffinic wax coating prevents water adsorption on hygroscopic hydroprocessing catalysts, maintaining catalytic activity and improving storability.

A molded catalyst uses a low-sulfur layered magnesium silicate binder to suppress dimethyl ether by-production during methyl methacrylate synthesis.

Reduced pressure operation in gas phase Guerbet reactions prevents catalyst oxidation while increasing alcohol yield.

Developing SSZ-99 molecular sieve with novel pore architecture and enhanced selectivity for gas separation applications.

Activates natural clay minerals via sub-molten salt and thermal treatments to synthesize Beta molecular sieves.

Zeolite-supported copper-iron catalysts convert syngas to higher alcohols, resolving the trade-off between metal loading and catalytic activity.

Alkaline treatment of NaZSM-5 zeolite increases mesopore volume and mechanical strength, extending catalyst lifespan against coking.

EMM-13 bifunctional catalyst improves cyclohexylbenzene selectivity while minimizing methylcyclopentylbenzene by-products.

A modified zeolite catalyst converts oxygenated feeds into high octane gasoline while suppressing durene crystallization and benzene formation.

High nanopore volume stabilized Y zeolite enhances acid site distribution to increase heavy middle distillate yield and reduce gas make.

Segmented washcoats resolve ammonia slip by converting excess ammonia to nitrogen, maintaining NOx conversion efficiency across wide temperature ranges.

PIDC-type zeolites increase strongly acidic site density to boost NOx conversion efficiency and reduce slip in SCR reactions.

A zeolite catalyst with a controlled silica-to-alumina ratio and low sodium content produces lower olefins from oxygenates.

A hard surfacing material on the heat exchange tube prevents erosion from gas injection, maintaining cooling capacity in FCC units.

Segmented porous and molecular sieve layers delay metal elution, reducing deactivation rates during light hydrocarbon aromatization.

Segmented hydrotreating and hydrofinishing catalysts in one reactor reduce hydrogen consumption while producing jet fuel exceeding 125,000 Btu/gal.

Spray-dried catalyst composition overcomes particle wear limitations to enable high CO conversion in fluidized bed processes.

A porous alumina catalyst combines weak acid sites with transition metals to selectively crack residual oil into middle distillates.

A structured catalyst embeds solid acid nanoparticles within zeolite channels to maintain high catalytic activity during methanol reforming.

Acid and base post-synthesis treatments modify ZSM-5 catalyst surfaces to resist coke formation, extending operational life for ethylene conversion.