Molecular Sieve Catalyst TRIZ Cases

Zeolite-catalyzed depolymerization processes convert complex polyolefin waste directly into usable liquid and gaseous hydrocarbons without extensive sorting.

Integrating reaction and separation in a single column resolves the trade-off between process control and production efficiency for diesel additives.

Optimizing MFI zeolite crystallite size and Si:Al ratio to maintain stable product selectivity during olefin oligomerization.

Separating isopentane from n-pentane enables distinct catalytic zones that boost aromatic yields while extending catalyst lifespan against sulfur contamination.

Bifunctional catalysts convert renewable furfural into cyclopentadiene, reducing energy intensity compared to naphtha steam cracking.

Reducing UZM-14 crystallite size below 60 nm alongside increased mesopore volume improves conversion of heavy aromatics to lighter products.

Mixture of deactivated and regenerated catalyst balances activity and selectivity to increase ethylene and propylene yield.

A mordenite zeolite catalyst featuring a mesoporous surface area exceeding 30 square meters per gram and primary crystal sizes under 80 nanometers.

Metathesizing butene with mesoporous silica catalysts yields propylene independent of ethylene supply constraints.

Removing binders from zeolite bodies eliminates pore blockage and coking, extending catalyst lifetime.

Boron-incorporated MFI zeolite reduces proximate framework aluminum sites to resolve low methanol utilization and side reactions in toluene methylation.

Selective hydrogen extraction via a transport membrane shifts reaction equilibrium toward aromatic yields while suppressing coke formation on the catalyst.

A secondary alkylation reaction zone alkylates non-aromatic purge streams containing unreacted benzene.

Zeolite catalyst compositions incorporating Group 10-12 and Group 15 elements to convert oxygenates into aromatic hydrocarbons.

Steam-air mixed gas controls residual coke content during partial regeneration, reducing CO2 emissions while maintaining light olefin selectivity.

Staging pyrolysis oil introduction into methanol conversion reactors minimizes reactor fouling while improving aromatic yields with bifunctional catalysts.

Dynamic transalkylation conditions minimize benzene co-boiler formation during initial catalyst cycles to achieve 99.9% purity.

Segmented reactors and recycled CO2 eliminate azeotrope separation costs while boosting C2-C4 carboxylic acid productivity.

Staged monomer injection with composite zeolite catalysts directs olefin conversion pathways toward specific trimer products.

Combining noble metals with lanthanides on nonporous substrates reduces cost while maintaining high conversion yields.

Segmented fluidized reactors with dual-function catalysts boost propylene selectivity while minimizing ethylene byproducts from methanol feeds.

Transition metal-loaded porous materials adsorb nitrogen contaminants from alcohol compositions in the vapour phase.

Combines oxidative dehydrogenation with a catalytic membrane reactor to remove hydrogen, lowering energy consumption and eliminating coke production.

Plasma treatment at ambient conditions selectively removes coke from zeolite catalysts to restore catalytic activity.

MCM-22 molecular sieves enable direct benzene propylation without extraction, eliminating ethylbenzene by-products and reducing process complexity.

Preliminary low silica zeolite catalyst removes poisons from input streams, extending main alkylation catalyst life.

Steaming reduces bulk aluminum molybdate below 2700 ppm, minimizing coke formation and maintaining catalyst activity during methane conversion.

Segmenting the reactor zone with a terminating agent prevents side reactions, boosting ethylene and propylene selectivity.

An 8-membered ring molecular sieve catalyst converts methyl halides to olefins while suppressing aromatic by-product formation.

Water washing removes oxygenates from olefin streams, preventing crystallization in distillation columns and protecting catalyst life.

Removing methylcyclopentylbenzene before oxidation prevents contamination, enabling high-purity phenol and cyclohexanone production.

Segmented catalyst zones with controlled coke deposition resolve the contradiction between high methanol conversion and olefin selectivity.

Synthesizing high-silica SSZ-32x zeolite using dipropylamine in fluoride media to enhance external surface area.

Optimized aluminum distribution in a CON zeolite extends catalyst life and reduces ethylene by-product formation during lower olefin synthesis.

A Pt-Sn-Ga-alumina catalyst composition converts n-pentane feedstock into cyclic C5 compounds through surface chemical reactions.

A zeolite catalyst with metal dopants converts C1-C5 alcohols directly into olefin mixtures in a single reactor stage.

Metal triflate catalysts drive ethylene and 2,5-dimethylfuran cycloaddition to boost para-xylene selectivity while suppressing side reactions.

Continuous reactor recycling converts non-aromatic hydrocarbons to aromatics, resolving low yield and high energy consumption trade-offs.

Replacing corrosive acid catalysts, this method uses visible light to drive selective Diels-Alder reactions for aerospace fuel production.

An acidic ionic liquid catalyst cleaves cyclohexylbenzene hydroperoxide to produce phenol and cyclohexanone with high selectivity.

Acidic adsorbent bed extracts nitrogen impurities from benzene by-products to prevent catalyst deactivation in alkylation reactors.

MFI-type zeolite catalyst with 0.1 to 2.0 mm thickness resolves pressure loss and activity trade-offs in lower olefin production.

Mixed oxide catalysts convert acetic acid to isobutene for para-xylene production, reducing environmental impact and process complexity.

Limiting butene conversion to 5-40% and using high recycle rates produces C8 olefins with an isoindex below 1.2 from low 1-butene streams.

Liquid phase methylation of toluene with methanol using MWW zeolite catalysts under mild conditions.

Parallel oxygenate-to-olefin reactor trains enable continuous synthesis while one unit undergoes catalyst regeneration.

Amorphous mesoporous silica foam impregnated with tungsten oxide catalyzes butene metathesis to produce propylene while reducing catalyst deactivation.

HMCM-22 molecular sieve modified with boron or phosphorus heteroatoms enhances catalyst stability during long-chain alkylbenzene production.

Fractional distillation removes excess dimethyl ether from the feed to prevent inhibition, enabling direct product utilization without further purification.