Physical/Chemical Process Catalysts TRIZ Cases

A wall-flow honeycomb filter uses an asymmetric inlet-to-outlet cell area ratio to manage exhaust flow distribution.

Ternary nitride compounds react with corrosive species like H3O and HF to neutralize them, preventing substrate degradation in acidic environments.

Non-spherical porous elements reduce pressure drops by 50% while supporting deeper catalyst beds for higher conversion rates.

Zirconia or titania catalysts convert cis isomers to trans cyclohexane dicarboxylic acid at moderate temperatures, avoiding hard product handling issues.

Chemical oxidation introduces functional groups while freeze-drying expands the film into a porous sponge, boosting adsorption capacity beyond 200 m2/g.

Phosphoric acid catalyzes amidation between taurine and fatty acids, achieving high conversion rates while preventing undesirable browning.

Low-temperature deposition of nanostructured ceramic coatings onto plastic substrates using solution-based techniques.

Branched alkyl aromatic aldehyde prevents carbamate salt formation from carbon dioxide absorption, improving epoxy coating water resistance.

Selective isomerization of trans-1,3,3,3-tetrafluoropropene via optimized catalyst conditions suppresses 1,1,1,3,3-pentafluoropropane byproduct formation.

A honeycomb filter design uses distinct plugging lengths to enhance structural integrity and exhaust purification performance.

Integrates tail gas treatment with the Claus furnace by recycling sulfuric acid, achieving high H2S removal efficiency without adding separate complex units.

A catalyst support uses overlapping hole rows to provide uniform strength across the carrier structure.

Segmented inside and outside downcomers with independent caps prevent clogging at high liquid levels, ensuring continuous gas flow.

Dual ultrasonic generators supply vibration directly to a tensioned wire, preventing deformation of soft honeycomb mold bodies during cutting.

Doping nitrogen into conductive carbon supports improves electrochemical resistance, preventing degradation from corrosion in fuel cell catalysts.

Stable inorganic peroxoacids catalyze alkane and sulfur trioxide reactions, eliminating harsh conditions that cause side products.

A turbidimeter measures reactor feed stream turbidity to determine solid catalyst concentration in polymer production systems.

Intersecting band electrodes suppress thermal stress and cracking during rapid temperature changes while maintaining reliable operation.

A rotary wheel circulates catalyst and waste plastic within a spherical vessel to enhance decomposition efficiency.

Halide ions stabilize the reduction reaction while rapid cooling terminates growth, eliminating surfactant contamination and enabling scalable batch production.

Segmented honeycomb bodies with oblique surfaces resolve manufacturing complexity while improving exhaust gas flow distribution.

Dry mixing alumina with a solid sulfating agent followed by calcination produces a sulfated alumina support for polymerization catalyst systems.

A catalytic converter housing integrates independent fluid pipelines within segmented flow channels to enable direct heat exchange between exhaust gases and cooling media.

Bismuth oxide on titanium oxide removes arsine from hydrocarbon streams while avoiding acetylide formation.

Chalcogen double perovskites replace toxic lead with non-toxic elements like indium and antimony to create stable optoelectronic materials.

Macroporous silica support overcomes diffusion limitations in heavy oil hydroconversion by balancing mass transfer and surface area.

Band-like electrodes on a ceramic honeycomb body regulate electrical resistivity to inhibit uneven temperature distribution and enhance heat shock resistance.

A carbon carrier nanoparticle composite catalyst features a polymer layer with amine and hydrogen ion exchange groups.

Carbonitride precursor synthesis creates porous carbon with high specific surface area, resolving micropore-mesopore trade-offs for hydrogen storage.

Controlled SiC powder particle size prevents long-term resistivity increases, ensuring stable heating performance.

Iron-based metal-organic frameworks adsorb uremic toxins from blood, addressing insufficient removal efficiency in conventional dialysis membranes.

Aldol organocatalysis enables reversible bioconjugation of polypeptides at physiological pH and temperature.

A prereformer treats the mixture at lower temperatures, preventing carbon deposits that obstruct flow passages.

Sinuous web structures direct exhaust gas radially through porous ceramic walls, lowering pressure drops and regeneration temperatures.

Electrides reduce organic copper compounds to form nanoparticles with high dispersibility, enabling low-temperature sintering on heat-sensitive substrates.

Introducing sulfonate or carboxylic groups onto a tantalum-containing catalyst surface to enhance oxygen reduction activity within the cathode catalyst layer.

Porous catalyst bodies convert glycidyl esters into monoacylglycerides, avoiding oil loss from traditional bleaching earth.

Heat sinks absorb excess energy from the electrodes to mitigate hotspot formation, ensuring uniform temperature distribution for faster light-off.

Dicarboxylic acid particles sized at 100 micrometers accelerate thermoplastic polyester polymerization kinetics.

Bottom-up carbon nanotube growth eliminates top-down overhang biases, reducing contact resistance and simplifying metallization steps.

Titanium oxide granules decompose waste plastics and organics at controlled temperatures.

A honeycomb structure uses band-like electrodes to manage current flow and temperature distribution.

Segmented pore sizes and a roughened coat layer suppress pressure loss while ensuring effective particulate matter combustion in diesel filters.

Replacing toxic reagents in diclofenac synthesis with a boric acid-catalyzed route that achieves 74% yield while eliminating environmental pollution.

Electromagnetic susceptor heating in a silicon reactor prevents wall deposition while maintaining reaction temperature.

Methane acts as a heat sink during alkane oxidative dehydrogenation, resolving temperature safety risks while maintaining high conversion rates.

Engineered spheroidal particle packing creates large pore necks that maintain mechanical strength while enabling high porosity for exhaust filtration.

Metal carbide nanotube supports resist oxidative corrosion under high voltage, preserving catalyst stability in fuel cells.