Molecular Sieve Catalysts TRIZ Cases

Supported rare earth catalysts replace scarce late metals to enable efficient C-H bond activation while reducing material costs.

Calcined JMZ-1C zeolite improves selective catalytic reduction activity for exhaust gas treatment by maintaining structural integrity during synthesis.

Zeolitizing the binder matrix with potassium hydroxide yields extrudates containing 90% KL zeolite while maintaining crush strength above 0.7 daN/mm.

Composite zeolite catalysts reduce cold start NOx emissions without increasing CO2 output.

A composite SCR catalyst uses platinum group metals on refractory supports to boost nitrogen oxide reduction activity.

Adding sulfur compounds poisons metallic sites in alcohol dehydration, suppressing aldehyde by-products and boosting olefin conversion efficiency.

Low temperature calcination preserves acid sites in SSZ-95, reducing C1-C4 gas make during hydrocarbon conversion.

Swirl ducts in a two-stage regenerator separate catalyst from flue gas, resolving low coke combustion efficiency in short vessels.

Kaolin sprayed microspheres undergo calcination to produce high-content NaY molecular sieves with improved crystallinity.

Group IB or IIB metallic oxides replace halogens to bind sulphur impurities, maintaining hydrogenating activity and preventing oligomerization in refining.

Segmented reaction stages with hydrogen permeation membranes bypass thermodynamic limits, reducing catalyst deactivation from coke formation.

A NaY molecular sieve with an aluminum-rich surface uses a directing agent to facilitate hydrothermal crystallization.

Optimized reactant molar ratios resolve the trade-off between synthesis feasibility and crystallization yield in TS-1 zeolite production.

Optimizing zeolite calcination at 375° C to 475° C maintains reaction rates and selectivity under hydrogen-rich conditions.

One-pot hydrothermal synthesis eliminates complex ion exchange steps, reducing production costs while maintaining high crystallinity for SCR catalysts.

A catalyst with distributed metal components improves hydrocarbon cold flow properties through selective isomerization.

Reducing Group VIII noble metal content in a dewaxing catalyst to 0.03-0.35 wt% achieves cloud point reduction with lower hydrogen consumption.

A zeolite catalyst module conditions fuel before combustion to enhance molecular surface area and reaction kinetics.

Gallium-modified ZSM-5 catalysts convert synthesis gas to gasoline-range hydrocarbons while suppressing undesirable low and high carbon number fractions.

A small pore molecular sieve supported transition metal catalyst selectively oxidizes ammonia to nitrogen gas.

A crystalline silicoaluminophosphate molecular sieve undergoes controlled moisture adsorption and moderate thermal treatment to create a modified catalyst.

Lanthanide-modified zeolite catalysts replace toxic aluminum chloride to boost ethylbenzene yield and reduce energy consumption.

Polymodal alumina particles support a dispersed sulfurated catalyst to prevent acidity-induced coking and porosity blocking during heavy feedstock conversion.

Incorporating praseodymium into the catalyst layer boosts low-temperature CO oxidation, resolving insufficient purification at engine start.

A hybrid catalyst system converts methane to aromatics via oxidative coupling and co-aromatization in a single reaction stage.

Liquid solvent treatment removes boron from MWW zeolites without acids or steam, reducing safety hazards and energy consumption.

Using trimethylphenylammonium cations as structure directing agents produces MAZ zeolite crystals larger than 5 μm, improving catalytic stability.

Synthesizing nano-sized mesoporous beta zeolites via aluminosilicate fluid gel and CTAB templating to resolve diffusion limits in heavy oil hydrocracking.

Integrating sulfidation with calcination eliminates separate reduction steps, resolving incomplete metal conversion while enhancing catalyst activity.

Layered palladium catalyst composition with magnesium and rhodium dopants lowers light-off temperatures while resisting sulfur poisoning.

Decreasing platinum group content across three longitudinal zones reduces nitric oxide and sulfur dioxide oxidation while maintaining reliable heating.

Optimized zeolite beta domain size and USY ASDI improve middle distillate selectivity while suppressing lighter product formation.

A desulfurization catalyst incorporates vanadium carbide and metal promoters to enhance structural stability and abrasion resistance.

Metal-doped SAPO-34 microporous material enhances catalytic conversion efficiency in exhaust systems.

Ketone promoters modify solid acid catalysts to accelerate methanol dehydration, preventing hydrocarbon co-production and catalyst deactivation.

Staged olefin injection in benzene alkylation converts harmful benzene into high-octane fuel while conserving refinery hydrogen resources.

Moderate temperature and pressure conditions preserve catalyst activity while improving dimer and trimer selectivity.

Internal zeolite channels physically contain metal catalyst particles, preventing heat-induced aggregation and extending operational life.

Zeolite matrices confine platinum nanoclusters on carbon supports, preventing aggregation during thermal treatment while sustaining catalytic activity.

A selectivated molecular sieve catalyst with hydrogenation metals achieves high para-xylene selectivity in toluene alkylation.

A pseudo-heterogeneous catalyst system combines homogeneous acid with porous silica to enhance catalytic activity and stability.

Atomizing nozzle creates fuel droplets suspended in oxygen for continuous contact with a stationary monolith catalyst, eliminating batch processing delays.

A solid titanium catalyst system uses a magnesium alcohol adduct on a porous support to produce polyolefins with controlled morphology.

Optimized chabazite zeolite coatings prevent peel-off from honeycomb bodies under high space velocity exhaust conditions.

A catalyst combining nano-metal oxides and hierarchical zeolites enables one-step hydrogenation of carbon dioxide into hydrocarbons.

Integrated aromatization reactors recycle non-aromatic hydrocarbons to boost total yield while reducing energy consumption.