Catalyst Activation/Preparation TRIZ Cases

Two-step decomposition of cobalt nitrate yields small, homogeneously dispersed cobalt crystallites without expensive rhenium promoters.

A crystalline transition metal tungstate catalyst enables deep desulfurization and denitrification in hydroprocessing applications.

Deposition precipitation-carbonization disperses niobium oxide in carbon to prevent surface area loss during high-temperature aqueous reactions.

A gold-doped nickel nanocluster catalyst converts carbon dioxide to carbon monoxide with high selectivity.

A Ni-Al nano-particle catalyst enables selective lignin depolymerization into aromatic monomers.

Carboxylic acids adsorb onto cobalt oxide nanoparticles to prevent aggregation, resolving the trade-off between high catalyst loading and dispersion stability.

Porous carbon particles guide chromium hydrate salt infiltration to form uniform 10-50 nm oxide structures.

A catalyst with optimized phosphorus and sodium ratios enhances hydrodesulfurization activity on alumina supports.

Embedding nanoparticles inside a porous ceramic matrix prevents sintering at high temperatures while maintaining catalytic activity.

Palladium-copper composite catalysts on silica withstand strong acid and high temperature to produce 1,3-cyclohexanedicarboxylic acid with minimal by-products.

Titania-supported catalyst with manganese titanate reduces oxygenate selectivity while maintaining high paraffinic hydrocarbon production.

Concentrated metal solutions enable single-step catalyst impregnation, preventing container adhesion through organic additives.

A mixed acid-modified zinc-cobalt double metal cyanide catalyst increases specific surface area and thermal stability.

Calcining iron oxalate hydrate under carbon monoxide forms porous Fe5C2/graphite composites, reducing methane selectivity in Fischer-Tropsch synthesis.

Continuous coprecipitation produces rare earth alumina particulates with stable surface area integrity.

A tantalum wire with a boride layer reduces thermal expansion and prevents blowout during high-temperature operation.

A porous catalyst structure achieves high specific surface area through a sintered composite of coated support particles and a ceramic matrix.

Thermal plasma synthesis of cobalt boride nanoparticles replaces expensive noble metals to lower costs while maintaining high catalytic activity.

Optimized potassium, calcium, and aluminum promoters in an iron catalyst resolve the contradiction between long-term stability and high ammonia yield.

Low-temperature firing of a titanium compound sol creates transparent photocatalytic coatings, avoiding substrate damage from high heat.

Boron-modified alumina support maintains porous structure while boosting desulfurization activity for heavy feedstocks.

Solvent-deficient synthesis of silica-doped alumina nanoparticles prevents sintering and phase transformation at 1200°C.

Pore-forming agents template uniform interconnection parts in hierarchical porous materials.

Thermal decomposition of natural rubber yields high-yield multi-walled carbon nanotubes with tunable diameters, replacing unsustainable fossil fuel feedstocks.

Zinc compounds modify the catalyst system to resolve the trade-off between stereospecificity and polymerization activity.

U-carbon achieves structural stability alongside ferromagnetism through an sp2-sp3 hybrid system.

Homogeneous coprecipitation reduces variation in reduction conditions, preventing unproductive species formation.

Organic-modified rejuvenated catalysts preserve olefins and octane numbers while removing sulfur, reducing replacement costs.

Porous carbon and PTFE form a hydrophobic catalyst resisting tritium radiation and liquid water, simplifying isotope separation columns.

Segmented silver and ruthenium catalyst beds remove acetylene, dienes, NOx, and oxygen while minimizing ethane production.

Contacting solid metallocene with an activator support resolves low activity issues in olefin polymerization, yielding higher production rates.

Nitrogen doping modifies the electronic band gap of TiO2 nanostructures, enabling visible light activation and resolving UV dependency constraints.

Extruded boehmite alumina support enables selective hydrodesulfurization, preserving octane number during sulfur removal.

A barium niobium oxynitride photocatalyst incorporates cobalt oxide or metallic cobalt promoters to enhance long-wavelength light absorption.

Periodic catalyst removal prevents tungsten deposition deactivation, extending runtime to 100 hours.