Molecular Sieve Catalysts TRIZ Cases

A Lewis acid catalytic process converts C6 and C5 sugars into alpha-hydroxy-beta-ene-acids with yields exceeding 15 percent.

A selective catalytic reduction catalyst uses a binder with multimodal pores to increase active site access.

High silica-to-alumina ratio AFX zeolite catalysts maintain hydrothermal stability above 350°C while reducing nitrogen oxides in diesel exhaust.

M/A/zeolite catalyst converts polyaromatic hydrocarbons into monoaromatic products via ring opening reactions under controlled hydrocracking conditions.

Deep hydrogenation reduces aromatic content in middle distillates to boost light olefin yield and economic value.

Rod-shaped strontium hydroxyapatite catalysts enable anhydrous ester condensation, eliminating water formation and dimethyl ether byproducts.

Surfactant emulsions control BEA zeolite crystal growth to resolve continuous manufacturing precision contradictions.

Noble metal loaded zeolite catalyst achieves high middle distillate yields at low pressure, resolving the trade-off between productivity and operational costs.

A butene conversion process splits feedstock into metathesis and cracking streams to generate propylene.

Hydrothermal conversion of FAU zeolite with specific nitrogen agents eliminates impurities, yielding high-purity AFX zeolites for separation applications.

A promoted catalyst system enables selective hydrogenation of 1,3-cyclobutanediketone to diol.

Optimizing silica-to-titania ratios and using seed crystals prevents fibrous growth, improving dewaxing selectivity.

Hydrothermally calcined Mg-Pd catalysts oxidize methane in lean exhaust despite water vapor inhibition.

A molded catalyst uses controlled pore sizes to separate reactant dehydration from methanol transport.

Synthesizing MFI zeolites with 2,2-dipropylpentane-1-amine controls active site location to improve catalytic selectivity and stability.

A catalyst system applies active components at distinct temperatures to enhance polymerization activity.

Zeolite catalysts enable gas-phase dehydration of fluorinated carboxamides to fluoroalkyl nitriles, eliminating complex purification steps.

Replacing expensive adamantammonium with trimethylphenylammonium reduces synthesis costs while maintaining pure phase CHA framework purity.

A passive nitrogen oxide adsorber uses a palladium-platinum oxidation layer to store and convert exhaust gases at low temperatures.

Vanadium V-oxo electrocatalyst converts methane to methyl bisulfate at room temperature, eliminating high-pressure infrastructure.

Optimizing silica-to-alumina ratios and structure directional agents boosts hydrothermal stability, enabling 100% NO conversion in vehicle exhaust systems.

Silica barriers on alumina reduce sulfur oxide uptake, maintaining catalytic activity against deactivation.

A molecular sieve catalyst with a Constraint Index of 5 or less facilitates paraxylene production from benzene and toluene methylation.

Pre-synthesized organo-1-oxa-4-azonium cyclohexane structure directing agents enable molecular sieve synthesis without organic solvents or cooling steps.

Humid air heat treatment stabilizes a zeolite catalyst, extending cycle duration and resolving low temporal stability in olefin oligomerization.

Comb-branched polymers reinforce inorganic oxide extrudates for robust catalyst supports.

A conformal metal oxide coating protects mesoporous silica catalyst supports from hydrothermal degradation while maintaining surface area.

A once-through AEI zeolite synthesis method uses inorganic cations to replace expensive structure directing agents.

Solid silicon sacrificial agents prevent nanoscale TiO2 particle formation to stop membrane clogging during continuous catalyst recycling.

Alternating hydrocracking rates extends catalyst life while maintaining middle distillate yield.

Direct hydrothermal gel synthesis produces chabazite zeolites without structure directing agents.

Alkaline liquid solvents deboronate zeolites, eliminating harsh acid treatments and steam to reduce safety risks and operational costs.

Grafting hafnium organometallic moieties onto zeolite frameworks via silanol sites overcomes restricted reactant accessibility in petrochemical cracking.

Microwave irradiation lowers decomposition temperatures to boost BTX and ethylene yields while cutting energy costs.

Segmenting SCR catalysts across a wall flow filter and a downstream substrate balances high NOx conversion efficiency with controlled backpressure.

SSZ-95 molecular sieve employs low-temperature calcination after ion exchange to maintain acid site density, reducing gas make during hydrocarbon conversion.

Co-modified zeolites suppress arene byproducts, achieving over 90 wt% ethylene and propylene selectivity.

Composite metals reinforce SAPO framework integrity, preventing structural collapse during high temperature exhaust processing.

A hydrocracking catalyst combines Y and SAPO-34 molecular sieves with in situ silica to boost jet fuel production.

Electrical heating synchronizes nitrogen oxide release with SCR catalyst activation, preventing slip during cold starts.

A catalyst treatment method deposits active substances unevenly within porous walls using transport fluids to maintain high activity near contact areas.

Water extraction removes excess phosphorus from pentasil zeolite, restoring pore volume and increasing 27Al MAS NMR peak intensity at 50 ppm.

Chelation extracts rare earth elements from waste ash while hydrothermal treatment converts residual materials into zeolites, eliminating toxic byproducts.

Optimized pore volume distribution in ceramic cell walls reduces exhaust gas pressure loss while maintaining structural strength.

K+ exchanged FAU zeolite catalyst converts lactic acid to acrylic acid, eliminating amine recovery steps.

An ultrafine zeolite SCR catalyst reduces pressure loss by preventing pore clogging and PM accumulation despite high catalyst loading.

A binderless molecular sieve catalyst uses rod-like inorganic agents to maintain structural integrity without pore blockage.

Optimize layered catalyst selection by ranking model compound reactivity against feedstock double bond equivalence, eliminating trial-and-error testing.