Molecular Sieve Catalyst TRIZ Cases

A bimodal porous dealkylation catalyst resolves low conversion rates and high energy consumption by selectively dealkylating C9+ aromatics at lower temperatures.

Steam mediates demethoxylation of alkylmethoxyphenols using MoP/SiO2 and HZSM-5 catalysts, avoiding coke formation and dehydroxylation.

Uniform hydrogenation metal distribution in hydroalkylation catalysts enhances benzene conversion and cyclohexylbenzene selectivity.

Lewis acids mediate DMF cycloaddition to para-xylene, minimizing 2,5-hexanedione byproducts for higher yields.

Refractory coatings reduce carbon uptake on reactor surfaces, preventing carburization during high-temperature methane conversion.

Replacing toxic benzyl trimethyl quaternary ammonium ions with low-cost choline cations reduces synthesis costs while maintaining crystal quality.

A segmented catalyst system combines methanol synthesis and dehydration layers to produce dimethyl ether from synthesis gas.

Separate gas distributors control mass transfer to prevent rapid methanol consumption, boosting benzene conversion above 40%.

Acidic solid pretreatment converts ethanol feedstock to diethyl ether, protecting zeolitic catalysts from nitrogen impurities and extending operational life.

Staged fluidized bed reactor converts oxygenates to hydrocarbons, increasing gasoline yield without alkylation units.

A two-step process converts mixed plastic waste into olefins and aromatics using pyrolysis and catalytic fluid bed reactors.

A composite zeolite catalyst with interwoven ZSM-5 and Mordenite crystals enables simultaneous dealkylation and transalkylation reactions.

Alkylating benzene with cyclohexene using a silica-alumina or MTW-type zeolite catalyst to achieve high selectivity and reduce by-product generation.

Composite zeolite catalysts merge Beta and ZSM-5 crystals to catalyze xylene production from heavy reformate.

Segmented catalyst stages convert ethylene to branched olefins, minimizing aromatic compounds while maintaining high conversion rates.

A single reactor system processes different chemical feed streams sequentially using distinct catalysts and reaction types.

A molecular sieve catalyst converts methyl halides to acyclic C3-C6 olefins at low temperatures.

Solid catalysts decarboxylate biomass acids into propane and butane, resolving selectivity and cost trade-offs.

Continuous catalyst regeneration recovers C6+ hydrocarbons and minimizes carbon loss during alkyl bromide conversion.

A gallium-modified platinum alumina catalyst composition enables high-yield aromatic hydrocarbon production from light hydrocarbon feedstocks.

Catalyst composition using microsphere supports and rare earth dopants to enhance hydrothermal stability.

Optimized MCM-22 catalysts resolve low selectivity and high by-product formation during benzene hydroalkylation, improving economic viability.

Fluorine treated layered zeolite resolves low propylene to ethylene ratio by enabling selective conversion with extended residence time.

Solid phosphoric acid catalyst converts C4 and C5 olefins into a high-octane oligomerate stream, eliminating the need for further upgrading.

Converting C4+ byproducts into additional propylene through integrated oligomerization and cracking, resolving low yield trade-offs.

UZM-8 zeolitic catalyst converts dilute ethylene and benzene into alkylbenzene, eliminating hydrogen consumption and octane loss.

Low heating rates during hydroalkylation catalyst activation reduce gas handling costs while maintaining activity.

A process converts plastic waste into base chemicals using aromatic solvent dissolution and catalytic decomposition.

Zinc-modified MFI zeolitic catalysts convert ethane to BTX aromatics while suppressing methane and C9+ byproduct formation.

Extracting aromatics from fractionation columns reduces recycle loop size while enhancing per-pass conversion efficiency in zero benzene complexes.

Extractive distillation separates C3 and C4+ fractions, enabling lower purity methanol feed while maintaining propylene yield.

UZM-44 zeolite overcomes IM-5 diffusion limits via continuous 3D channels, boosting aromatic yield and thermal stability to 800°C.

Bifunctional catalyst converts methanol to dimethyl ether for toluene alkylation, boosting styrene yield.

Vapor phase adsorption removes nitrogen impurities from alcohol compositions, preventing catalyst poisoning during olefin production.

Intergrowing ERI and LEV frameworks in SSZ-105 resolves selectivity limits by combining distinct pore architectures within a single crystal phase.

A bimetallic catalyst system converts propane to propylene at low temperatures, extending catalyst life beyond 20 hours without noble metals.

Nickel zeolite catalysts achieve high co-dimer selectivity while simplifying separation and managing cost.

A molecular sieve preparation process uses a morphology modifier to control crystal growth and increase external surface area.

Limiting 2n carbon atom conversion below 10% during olefin cooligomerization preserves hydroformylatability of separated products.

Catalytic demethylation of diisobutylene yields neopentane using mild conditions and readily available C4 olefinic feedstocks.

In-situ crystallization on silica supports yields high zeolite content and attrition resistance without clay interference.

A hydrocracking catalyst preparation process combines zeolite, binder, and hydrogenating metal compound into a single mixture before calcination.

Metal oxide coated aluminophosphate sieves convert synthesis gas to lower olefins while suppressing paraffin by-product formation.

High temperature pyrolysis converts methyl mercaptan into olefins and hydrogen sulfide without methanol feedstock constraints.

Low nitrogen to aluminum ratio in UZM-8 zeolite prevents deactivation and maintains high selectivity despite severe operating conditions.

Rotor-stator mixing forms high solids slurry to produce attrition resistant molecular sieve catalysts.

Formulated metallosilicate catalyst converts acyclic C5 feedstocks into cyclic compounds using Group 10 metals and specific binders.