Catalyst Activation/Preparation TRIZ Cases

Directed reducing agent injection and staged agitation optimize flow index response consistency in chromium-based catalysts.

A bimodal mesoporous alumina catalyst enables selective hydrogenation of gasoline diolefins using specific pore volume distributions.

Cobalt-loaded carbon nanotubes replace expensive precious metals to lower catalyst costs while maintaining high hydrogen production rates.

Sequential alkylene oxide blocks activate double metal cyanide catalysts, preventing deactivation and maintaining high space time yields.

Alkaline aging reduces silica surface area to enable rapid thermal activation of chromium catalysts in large batches.

A nickel catalyst promoted with copper and sulfur achieves selective olefin hydrogenation while maintaining high activity.

A self-activating hydroprocessing catalyst uses a specific nickel-to-molybdenum ratio to enhance desulfurization activity over time.

A porous alumina carrier with controlled pore sizes enhances catalytic activity in hydroprocessing applications.

Dual calcination stabilizes nickel particles on alumina, resolving the activity versus stability trade-off in polyetheramine synthesis.

Segmenting catalyst particles by size in an ebullated bed reactor reduces sediment yield while maintaining hydrodesulfurization performance.

Modular LED fixtures with photocatalytic titanium dioxide coatings resolve heat dissipation limits while degrading air pollutants under visible light.

Alcohol-based solvothermal synthesis disperses ruthenium on cerium oxide, lowering reaction temperatures and energy costs while maintaining hydrogen purity.

Acoustic cavitation replaces complex multi-step thermal processes to synthesize high-performance porous multimetallic nanocrystals without templates.

Partial reduction of cobalt oxide at 220-250°C preserves C5+ selectivity while lowering energy consumption.

Washing the double metal cyanide catalyst with an aqueous polyether polyol solution increases carbon dioxide content while lowering the cyclic carbonate ratio.

Stepwise impregnation of sepiolite with tungsten, nickel, and molybdenum prevents metal interaction, achieving over 95% lignin conversion to 2-ethoxyphenol.

Copper dispersed in sub-stoichiometric spinel ceramic matrix prevents metal migration, extending particle lifespan and reducing attrition.

Reduced chromium catalysts adjust flow index response through controlled drying and oxidation state management.

A functionally graded manganese oxide coating provides catalytic activity that resists filamentous coke formation on furnace coils.

Alumina-supported rhenium oxide catalyst converts glycerol to allyl alcohol with 90% yield and enables catalyst reuse.

Phthalate-modified magnesium-supported titanium catalysts yield ultra-high molecular weight polyethylene with uniform particle size and high apparent density.

A monolithic catalyst integrates with a porous metal foam support to enhance gas mixing and contact time within the reformer.

A composite catalyst support combines alumina, silica, spinel, and phosphorus to enhance mechanical strength.

Two-stage precipitation controls nucleation to produce amorphous mesoporous alumina with tailored porosity, resolving filtration efficiency trade-offs.

Solvent extraction removes free acids from metal carboxylate salts to enhance catalyst flowability.

A MXene nanodot core-carbon shell catalyst structure enhances electrical conductivity and catalytic performance through chemical interaction.

Gas-trapping sonocatalyst nanoparticles localize cavitation at catalyst sites, reducing acoustic energy input and minimizing side reactions.

A single atom catalyst places metal atoms within a support oxide to enable precise atomic composition.

Replacing sulfuric acid with a composite catalyst system eliminates co-product formation while achieving high yields in short residence times.

Oxidation-induced segregation forms Pt-rich skin on PtNi nanoparticles, maintaining morphology and reducing mass transport resistance.

A ruthenium-based nickel-aluminum catalyst with alkali metal promoters decomposes ammonia into hydrogen and nitrogen.

Crystalline silica supports precipitated iron catalysts to reduce fines production during slurry phase Fischer-Tropsch synthesis.

Fluorided chromium catalysts produce polyolefins with tailored molecular weight distributions and reduced long chain branching.

Peripheral group VIB and homogeneous group VIII metals on alumina enhance diolefin conversion while preventing gum formation.

A complex metal oxide catalyst replaces toxic antimony in polyester production, reducing pyrolysis and yellowing while maintaining viscosity.

A copper-rare earth catalyst enables stable chlorine production via hydrogen chloride oxidation in fixed-bed reactors.

Metal porous body features a three-dimensional network framework coated with fine pores for enhanced surface area.

Optimized pore structure in ferrite catalysts boosts butadiene conversion while cutting steam usage, lowering wastewater costs.

Halloysite nanotube composites carry transition metal catalysts to resolve insufficient ammonia decomposition activity in conventional systems.

Alkali dopants modify indium oxide surface properties to suppress methane formation during high-pressure reverse water gas shift reactions.

Constraining metal phosphides within meso-porous silicon dioxide reduces catalytic material consumption while increasing hydrogen sulfide conversion rates.

A gas-phase nitrilation process using a column 8 metal oxide catalyst mixture to convert fatty acids into nitriles.

Crosslinked material webs in a catalytic reactor provide high catalyst contact area while reducing flow resistance and pressure losses.

Segmented pre-contact device with temperature-controlled coils prevents backmixing to optimize catalyst activity and isotacticity.

In situ supporting process prepares nanocatalysts with exposed (111) crystal facets and controlled particle size.

A display array incorporates violet micro-LEDs to activate a photocatalytic coating on the transparent cover.

Segmenting co-catalyst particles prevents aggregation and maintains electron-hole separation efficiency for acetaldehyde decomposition.

Segmented catalyst zones with tailored pore structures resolve the trade-off between asphaltene conversion capability and desulphurization activity.

Optimized spherical catalyst particles prevent adhesion in fluidized-bed reactors, maintaining high reaction activity while eliminating toxic chromium use.