Physical/Chemical Process Catalysts TRIZ Cases

Replacing expensive oxalic acid with heavy-oxygen water lowers costs and simplifies purification while maintaining high isotope labeling purity.

Metal-free carbon nitride nanotubes enable selective aerobic oxidation of cyclohexane, eliminating corrosive acids and greenhouse gas emissions.

Vaporized elemental sulfur acts as an oxidant with a metal sulfide catalyst to form ethylene from methane.

Aromatic hydrocarbon carrier gases maintain metallic sulfide catalyst stability during alkane dehydrogenation.

Varying cell density across radial zones in a honeycomb body ensures uniform exhaust gas flow while maintaining structural integrity under thermal loads.

Controlled pore diameter ratio in porous partition walls reduces pressure loss while maintaining isostatic strength for NOx treatment.

Press-fitting a buffer member into a case member eliminates thermal stress from welding, improving durability and production efficiency.

Replacing benzaldehyde with acrolein as co-oxidant alongside nitrogen-doped carbon nanotubes simplifies separation and reduces cost.

Segmenting active material into circulating micropellets reduces thermal mass and mechanical damage while maintaining electrical conductivity.

PVP-coated magnetite nanoparticles adsorb oil from water, reducing toxicity to aquatic organisms and accelerating biodegradation.

A formic acid production vessel operates at low oxygen partial pressure to prevent corrosion while a separate unit handles catalyst regeneration.

Sequential hydrogenation and decoloration in one reactor eliminates intermediate purification steps, reducing system complexity while maintaining aromaticity.

Varying channel dimensions along the flow path reduces total pressure drop by up to 85% while maintaining reaction control.

Reconfigurable hydrotreating reactors extend on-stream cycle length by distributing metal deactivation across permutable HDM and HDS units.

Asymmetric bonding layer arrangement distributes shearing stress across honeycomb segments to prevent structural damage.

Differentiating porosity in partition walls improves thermal shock resistance without increasing pressure loss or reducing isostatic strength.

Segmented linear solder joints attach thin metal foils to thick honeycomb housings, reducing excess solder material and unwanted diffusion.

Specific wavelength ranges for photon and phonon emissions enhance oxidizing agent effectiveness while managing chaotic phonon interactions.

A honeycomb structure manages porosity ratios between partition walls and outer peripheral walls to enhance thermal shock resistance.

A solid catalyst system uses a diester of aromatic dicarboxylic acid as an internal electron donor to produce polypropylene.

Concentrating photocatalytic particles in surface protrusions solves the trade-off between eco-friendly activity and natural wood appearance.

Staggering abutment edges across layered planar catalyst plates prevents flow passages through the reactor bed.

Optimized pore volume ratios in the partition wall suppress pressure loss while maintaining isostatic strength for higher catalyst loading.

Silicon carbide porous films with silicon dioxide layers reduce thermal stress during diesel particulate filter regeneration cycles.

Molecular sieve adsorption removes water, ethane, and propylene while partial condensation eliminates hydrogen and methane for high purity.

A reactor design positions a catalytic element within a precise thermal target zone to achieve near absolute conversion of sulfur compounds.

A communication terminal device manages network joining and coordinator function changes through autonomous power saving modes.

Antimony pentahalide catalysts enable efficient fluorobenzene synthesis, reducing energy consumption and waste compared to traditional Lewis acid processes.

Radio frequency antennas heat hydrocarbons in producer wells, replacing energy-intensive steam methods with direct electromagnetic heating.

Rare earth nitride catalysts break nitrogen bonds at room temperature, reducing the carbon footprint of ammonia production.

Positioning a dip tube above the bromine liquid surface prevents blockages from solid deposits while recirculating reaction mass around the feed stream.

Protrusions on a structured catalyst create controlled clearance to balance ease of removal with reaction efficiency.

External down-corner heat exchanger manages high reaction heat in gas-lift bubble column to reduce equipment size and maintain yield.

A silicon carbide honeycomb filter uses alumina fiber adhesive layers to maintain structural integrity at extreme temperatures.

Titanium dioxide coating on glass lowers hydrogen permeation to less than 10^-13 mol/cm s, solving leakage issues in therapeutic gas storage.

Acid catalyst enables fluorenylidene diallylphenol condensation at room temperature, eliminating high-temperature Claisen rearrangement steps.

A wall flow filter concentrates the selective catalytic reduction catalyst in the outlet portion of its porous walls to enable efficient exhaust gas treatment.

Differentiating brazing lengths at the exhaust outlet increases rigidity where thermal stress peaks, preventing deformation while minimizing material usage.

Axial variation in trapping layer thickness resolves the contradiction between high particulate trapping capacity and low exhaust gas permeation resistance.

Low-alkali alumina catalyst drives cis-2-pentenenitrile isomerization, minimizing pentenenitrile oligomer formation and extending operational lifetime.

Embedded metal wires in the catalyst substrate enable rapid light-off temperatures, reducing cold-start emissions without continuous high energy consumption.

A substrate treating apparatus includes a decomposition unit that breaks down alkaline gas leaking from the treatment space.

Overlapping protrusions on partition walls adjust inter-protrusion length to reduce pressure loss while securing ash deposition capacity.

Pre-formed ribbons with curved edges assemble into semi-hexagonal cells, achieving curved contours without applying strong forces that compromise core strength.

Chromium-nickel catalysis on fluorinated alumina improves 1234yf yield and selectivity while reducing by-product formation.

Composite metal phosphate catalyst converts lactic acid to acrylic acid, suppressing side products and extending catalyst longevity.

Gradient outer wall coating relaxes heat shock in ceramic honeycomb structures while maintaining surface hardness against vibration damage.