Molecular Sieve Catalyst TRIZ Cases

Carbon dioxide purges hydrocarbon vapors from the catalyst bed before oxygen introduction, preventing explosive conditions during coke combustion.

Segmenting alcohol intermediates into methanol and C2+ streams enables selective conversion to aromatics and olefins while reducing by-product formation.

A silica-supported transition metal oxide catalyst converts aqueous ethanol directly into butenes, eliminating costly water separation stages.

Halide binding on zeolite supports increases crush strength, reducing abrasive fines that plug reactor equipment during loading.

Controlling the tR/tM ratio in a cleavage reaction zone with composite phosphoric-sulfuric acid catalysts reduces by-product formation.

Fluidized bed reactor zones maintain strict temperature differences to convert methanol into ethylene and propylene with high efficiency.

Hydrolysis solution hydrogen sulfide concentration management stabilizes methionine production apparatus integrity.

Removing nitrogen impurities from the effluent stream with acidic solid adsorbents to protect zeolite catalysts.

Acid-treated hydrous alumina binds H-zeolite crystallites into a mechanically robust composite catalyst structure.

Selective xylene production from light hydrocarbons using crystalline aluminosilicate catalysts overcomes low yield and high toluene generation.

Segmented alkylation reactors use sacrificial H-beta zeolite beds to reduce amine poisoning and extend catalyst life.

Adding Brønsted bases accelerates decarboxylation rates, boosting yield and selectivity while minimizing contamination for polycarbonate production.

Segmented alkylation catalysts absorb feed impurities to extend cycle length and maintain selectivity.

Replacing magnesium oxide with layered double hydroxide eliminates sintering, maintaining catalyst activity and mechanical strength during regeneration.

MCM-22 molecular sieve catalyst enables benzene alkylation with isopropanol under high water concentrations.

Hydrocarbon quench isolates catalyst fines from para-xylene vapor effluent, avoiding low pH aqueous phase formation that causes separation difficulties.

Composite zeolite guard bed material adsorbs catalyst poisons from hydrocarbon streams, extending downstream alkylation catalyst cycle length.

Pre-treating a platinum catalyst with carbon agents and hydrogen resists coke deposition, extending operational life.

Coupling methane with biomass oxygenates over zeolite catalysts generates in situ hydrogen to prevent water poisoning and reduce coke formation.

JMZ-1S silicoaluminophosphate molecular sieve templates a CHA framework using a specific cation to enable catalytic reactions.

A supported zinc oxide and zinc halide catalyst converts halomethane into isobutylene, resolving low selectivity bottlenecks in methane utilization.

Recycles treated water from the reaction effluent to vaporize the ethanol feedstock via direct heat exchange.

Segmenting the aromatics complex into dedicated trans-alkylation and methylation units minimizes large recycle loops through fractionation columns.

USY zeolite substrates immobilize dehydration catalysts, enabling continuous crude glycerol conversion without purification.

Catalytic distillation converts isobutanol into isoalkanes, resolving water separation challenges.

Gas phase operation with a zeolite MTW catalyst prevents water-induced deactivation during benzene alkylation.

A fixed-bed zeolite reactor converts oxygenates into lower olefins using a supplementary inert gas stream for precise thermal regulation.

Sequential zeolite activation minimizes light paraffin byproducts while extending catalyst lifespan against sulfur contaminants.

Segmented fixed beds manage exothermic heat and catalyst degradation during methylation, resolving the trade-off between reaction rate and product purity.

Pt-supported MFI zeolite combined with Cu-Zn material maintains stability at low temperatures while achieving high propane yields.

Integrated hydrogenolysis and dehydrogenation reactors convert field-grade butane to MTBE, eliminating complex isomerization steps.

Moderate temperature operation prevents catalyst deactivation and reduces by-product formation during propanol dehydration.

MWW zeolite catalyst oligomerizes isobutene to resolve boiling point proximity with 1-butene.

A catalyst system with meso-mordenite zeolite converts heavy aromatics to lighter products.

A dealkylation-transalkylation system converts heavy reformate into mixed xylenes using sequential catalytic stages.

Spherical zeolite catalysts with controlled porosity reduce energy consumption and catalyst attrition during propylene production from C4/C5 olefins.

A low-sodium zeolitic catalyst converts oxygenates to olefins with high selectivity.

Optimized bifunctional catalyst maintains high aromatic yield while resisting coke-induced deactivation through controlled silica-to-alumina ratios.

Ethanol dehydration process yields high-purity ethylene while minimizing alkane by-products.

Microorganisms elongate carbon chains from ethanol to produce linear alkanes, reducing end-product inhibition.

A catalyst bed system integrates a heat-generating inert component to manage thermal distribution during dehydrogenation.

Split olefin feed across sequential reactor beds to control 2-phenyl content and extend catalyst run time.

Acidic molecular sieve converts alkoxyacetate into glycolic acid, eliminating waste salt pollution and avoiding corrosive high-pressure equipment.

STA-20 silicoaluminophosphate molecular sieve uses trimethylamine and diDABCO-C6 structure directing agents to form a unique crystalline framework.

A dual catalyst system converts alcohols to hydrocarbons using a basic oxide carrier and an etched metal-loaded zeolite.

Chiral molecular sieves with STW topology utilize linked di-imidazolium cations to direct crystalline assembly.

A hydroalkylation catalyst with concentrated hydrogenation metal in the rim portion produces cyclohexylbenzene efficiently.