Molecular Sieve Catalyst TRIZ Cases
- Rare-Earth Molecular Sieve Adsorbents for Longer Zeolite Alkylation
Rare-earth molecular sieve adsorbents limit coke buildup and pore plugging in zeolite paraffin alkylation, extending catalyst life and C8 selectivity.
- p-Xylene Preparation via Methanol-Coupled CO2 and Naphtha Conversion
Methanol-adjusted co-feeding of CO2 and naphtha boosts p-xylene selectivity while recycling benzene and toluene for lower-cost production.
- Mevalonic Acid Conversion via Fermentation and Catalytic Upgrading
Fermentation-derived mevalonic acid is catalytically converted into isoprene and other intermediates to cut petroleum dependence, cost, and processing time.
- P-Modified MWW Molecular Sieve for Selective p-Xylene Catalysis
Phosphorus-modified MWW weakens strong acid sites to improve p-xylene selectivity, catalyst stability, and carbon deposition resistance.
- Biomass-to-p-Xylene Conversion Using SCM Molecular Sieves
A two-step catalytic route converts biomass to p-xylene via 2,5-hexanedione, improving selectivity while reducing process complexity and cost.
- Zeolite-Catalyzed BioLPG Production for High C3-C4 Selectivity
Specific zeolite catalysts convert renewable alcohols into BioLPG with high C3-C4 selectivity while enabling catalyst rejuvenation and longer use.
- Zeolite-Alumina Composite Catalyst for Coupled Benzene Hydroalkylation
Chemical bonding between zeolite and alumina improves hydrogenation-alkylation coupling, reducing cyclohexane by-products and separation energy.
- Two-Stage Olefin Oligomerization With Recycle for Exotherm Control
A two-stage zeolitic and metal catalyst process with oligomerate recycle manages ethylene dimerization heat while producing jet-range distillate fuels.
- Zeolite Catalyst Calcination With Low-Dew-Point Air for Monoselectivity
Low-dew-point calcination air limits zeolite dealumination, preserving catalyst activity and monoselectivity for mono-alkylated aromatics.
- MTO Catalyst Circulation With Low-Oxygen Regenerated Catalyst Return
Controlling oxygen and steam below 0.1% in regenerated catalyst return lines cuts olefin impurities and reduces catalyst loss.
- Hybrid Catalyst Acidity Tuning for Propane-Selective Paraffin Synthesis
A high-acidity microporous and metal oxide hybrid catalyst boosts carbon conversion and shifts syngas products toward propane at lower temperatures.
- Secondary Oligomerization Reactor for Olefin Recovery
A small secondary reactor converts olefins from drag and depropanizer off-gas streams into C9+ blendstock, cutting carbon losses.
- Single-Bed Alcohol-to-Olefin Catalysis with Alumina and Zeolite
A single-bed alumina-zeolite catalyst converts C1-C5 alcohols to C2-C5 olefins with high selectivity, lower process complexity, and less aromatics.
- Zeolite Alcohol Dehydration with Mesopores for Low-Coke Alkene Production
Mesoporous 8MR zeolites dehydrate branched alcohol feedstocks to linear alkenes at lower temperature while limiting coke and trapping nitrogen impurities.
- Two-Bed Alcohol Conversion for Low-Aromatic C2-C7 Olefins
A two-catalyst reactor sequence converts C2-C5 alcohols into C2-C7 olefins in one stage, cutting unit operations and aromatic byproducts.
- UZM-54 Zeolite Catalyst Composition for Selective Xylene Transalkylation
A UZM-54 and mordenite catalyst boosts xylene selectivity while reducing aromatic ring loss and improving stability in heavy aromatic conversion.
- Molecular Sieve Catalyst Composition for Selective Aromatic Transalkylation
Balanced medium-strong acidity and moderate hydrogenation metals raise alkyl aromatic conversion while limiting ring-loss side reactions.
- SSZ-124 Aluminogermanosilicate Sieve for Selective Hydrocarbon Conversion
A germanium-containing SSZ-124 pore framework improves selectivity in hydrocarbon conversion while enabling adsorption and separation.
- Zeolite Olefin Oligomerization for Low-Branching C10-C13 Selectivity
Zeolite catalyst tuning controls branching index and favors C10-C13 olefins, reducing downstream separation in olefin oligomerization.
- Hydrogenolysis Catalyst Activation Using Butane and Hydrogen
A butane stream with hydrogen reactivates oxidized hydrogenolysis catalysts, improving conversion stability, catalyst life, and ethane selectivity.