Molecular Sieve Catalysts TRIZ Cases

Segmented moving bed reactors manage three-phase flow distribution during olefin oligomerization to prevent temperature spikes and catalyst deactivation.

Hydrogen gas reacts with carbonaceous deposits on microporous acid catalysts, preventing inactivation and extending lifetime during oxygenate conversion.

Si-RUB-39 silicate seeds accelerate hydrothermal crystallization of gallium and zinc heteroatom-comprising sheet silicates.

A continuous acid and base treatment sequence introduces mesoporosity into zeolites, eliminating filtration steps that reduce yield.

A diaminium template directs MFI molecular sieve crystallization, reducing crystal size and diffusion length for improved catalytic efficiency.

External catalyst cooler removes heat from coked catalyst before regeneration, preventing hot spots and reducing catalyst hold-up.

A homogeneous aqueous mixture of silica, aluminum, and oxidized disulfide oil yields co-crystallized pentasil zeolite and mordenite precipitates.

Zeolite encapsulated metal nanoparticles form through hydrothermal crystallization of carbon-coated precursors.

Optimized ZSM-5 catalyst preparation eliminates BTX co-boilers, enabling chemical grade purity via simple distillation.

Aldehyde promoters modify aluminosilicate zeolite catalysts to reduce hydrocarbon by-products during methanol dehydration.

Pentasil zeolites exhibit improved mesopore surface areas between 140 and 400 m2/g, resolving external surface area limitations in hydrocarbon conversion.

A hybrid catalyst system combining microporous and gallium oxide components converts synthesis gas into C2 to C5 paraffins.

A bifunctional catalytic body merges methanol synthesis and dehydration steps into a single reactor unit.

A ferrierite zeolite catalyst system converts dimethyl ether to methyl acetate using a polymer binder and support structure.

Zone coating with ceria-based catalyst and Cu-zeolite minimizes ammonia oxidation interference while maximizing soot oxidation efficiency.

A molybdenite coating shields hydrotreating catalysts from deactivation, extending useful life while treating heavy feedstocks.

Recycles off-gases containing light hydrocarbons back into the reactor to increase kerosene and diesel yields from waste plastic.

Segmented slurry-phase and fixed-bed reactors convert polyaromatics to BTEX, increasing yield while managing process complexity.

Graded catalytic layers in a shell-and-tube reactor control hot spots to stabilize catalyst activity and boost yield.

Composite catalysts using ruthenium and nickel on zeolite beta increase cyclohexylbenzene productivity while reducing cyclohexane byproduct formation.

Replacing organic templates with diatomite and rectorite eliminates synthesis costs while maintaining high denitration performance.

Hydrothermal conversion of FAU zeolite using a fluorinated medium and specific organic template to produce IZM-2.

A core-shell copper and iron promoted 8-ring molecular sieve catalyst structure enhances nitrogen oxide conversion efficiency across wide temperature ranges.

Heating a mixture of zeolite and copper salt powder drives solid-state ion exchange, eliminating solution waste and reducing production costs.

Direct slurry reaction eliminates calcination and washing steps, reducing energy consumption while maintaining high metal loading.

A nickel catalyst on silica molecular sieves converts light olefins into heavier derivatives through selective oligomerization.

Cationic polymer templates direct hierarchical zeolite formation, resolving limited pore volume and reactant accessibility in industrial catalysis.

Phosphorus-modified ZSM-5 zeolite catalysts maintain steady activity during toluene methylation by stabilizing phosphorus species within the structure.

Oligomerizing 3-hydroxycarboxylic acid suppresses reactor clogging and reduces catalyst consumption during (meth)acrylic acid production.

Ultrasonic waves break up aggregated zeolite seed crystals, enabling smaller particle sizes and higher catalytic activity.

Surfactant-treated zeolites sequester arsenic via surface complexation, eliminating sludge generation and hazardous chemical handling.

Base-exchanged germanium-zeolite resists sulfur poisoning and lowers hydrogen co-feed requirements during alkane aromatization.

Regular mesoporous material converts 1,2-alkanediols into saturated aldehydes, avoiding expensive hydroformylation equipment and corrosion-resistant facilities.

A catalyst composition comprising Group 8, 9, or 10 metals, cyclooctadiene, and beta zeolite facilitates hydrocarbon feedstock conversion.

Separating heated diesel from unheated biofuel feeds manages exothermic reaction heat, enabling higher biofuel proportions without temperature runaway.

Noble metal supported on acidic H-ZSM-5 converts glycerol into aromatic hydrocarbons via bifunctional catalysis.

A copper, iron, and aluminum catalyst converts glycerol to 1,2-propanediol via hydrogenolysis.

Adding alumina between heating steps increases zeolite-Y yield, reducing production costs.

Distinct dimerization and alkylation catalysts prevent coke deactivation, enabling efficient high octane alkylate production from ethylene.

Copper-based fluidized bed catalysts with bismuth or tungsten promoters achieve high ethylene glycol selectivity while maintaining catalyst stability.

MWW framework zeolite converts isobutanol into C12 and C16 olefins while resisting water-induced deactivation.

Using a combined FAU zeolite source to synthesize zincoaluminosilicate SSZ-41 with high aluminum content, resolving synthesis complexity constraints.

Cascades hydrotreated feedstocks directly to hydrocracking catalysts without intermediate separation, using a dewaxing catalyst with non-dealuminated zeolites.

In-situ Y-faujasite crystallization on pre-shaped kaolin particles enhances macroporosity and catalyst integrity.

Removing binders from the molded catalyst formulation eliminates pore blocking, enhancing diffusion and reaction activity for methanol conversion.

A molecular sieve SCR catalyst incorporating yttrium as a second active component to enhance catalytic activity.

MFI and MEL zeolite catalysts convert propylene oxide to amino alcohols, suppressing trialkylated amine byproduct formation through controlled pore dimensions.

A moving bed reactor system uses stripping gas to separate vapor and liquid phases from catalyst solids during oxygenate conversion.