Preparation By Oxidation Reactions TRIZ Cases

Zirconium-catalyzed asymmetric carboalumination generates chiral intermediates that bypass difficult purification steps to achieve ≥99% enantiomeric purity.

A chemiresistive sensor combines platinum-polyoxometalate catalysts with single-walled carbon nanotubes to detect methane and hydrogen sulfide.

Biphasic conversion of dimethyl benzyl alcohol to cumene hydroperoxide minimizes heavy by-products and optimizes phenol yield.

Rh-R-Mo-V composite oxide activates methane at lower temperatures, reducing harmful CO production while maintaining high product selectivity.

Particulate rhodium catalyst on micro-porous silica converts hydrocarbons to ethanol and acetic acid, resolving selectivity limits in existing processes.

Purifying diols through controlled vacuum distillation below 250°C to maintain favorable color quality.

Sequential side draw columns remove low, medium, and high boilers from dehydrogenation mixtures to achieve 98% purity.

Converting low-value paraffins via dialkyl peroxide intermediates eliminates expensive C4 olefins while producing high-cetane diesel and high-octane alkylate.

Segmented catalyst beds with varying temperatures extend single-pass service life and reduce regeneration frequency.

Using sodium periodate as a co-oxidant with ruthenium catalysts suppresses ketone formation, achieving high diol selectivity.

Dual-pore bimodal carriers optimize mass transport and active sites, enabling selective C8-C22 alcohol production while reducing multi-step process complexity.

A copper dimer anchored on carbon nitride oxidizes methane to methyl oxygenates under thermocatalytic and photocatalytic conditions.

Soluble metal catalysts enable selective partial oxidation of lower alkanes to oxygenates in liquid phase.

Supported hexavalent chromium catalyst reduces via UV-visible light to convert hydrocarbons into alcohols and carbonyls at ambient temperature.

Chiral polyvinylpyrrolidinone stabilizes bimetallic nanoparticle catalysts, replacing toxic osmium to improve enantiomeric excess in oxidation.

Copper-loaded mordenite zeolite converts methane to methanol while preventing over-oxidation through precise temperature control.

Selective catalytic oxidation converts methane to methanol and formaldehyde, bypassing energy-intensive synthesis gas formation.

Metal salt catalysts replace photoreactors to oxidize limonene, controlling isomer ratios and recovering unreacted starting material.

Supported transition metal catalysts reduce under UV-visible light to convert hydrocarbons into alcohols and carbonyl compounds via hydrolysis.

Liquid phase ozonation of isobutane using a protic additive stabilizes reactive hydrotrioxide intermediates for controlled oxidation.

Carboxylic acid intermediaries protect catalyst surfaces from deactivation, extending operating life while suppressing unwanted by-products.

Templated active material anchors cobalt catalysts to solid supports, enabling simple filtration recovery instead of complex distillation.

A supported transition metal photocatalyst uses visible light to drive allylic oxidation of alkenes with carbon dioxide.

Ethylene dimerization and isomerization enable MTBE synthesis from ethane, bypassing scarce isobutane streams.

Copper sulfate oxidizes benzene to phenol in aqueous solution at temperatures exceeding 200°C.

Liquid carbon dioxide enables selective alkane oxidation with ozone, preventing deep combustion and improving yield.

Zirconium catalysts activate carbon-hydrogen bonds in polyolefins to form alkylaluminum intermediates for controlled degradation.

Purified bridged phthalocyanine-metal complexes eliminate organic solvents and heavy metal waste while maintaining high turnover numbers in alcohol oxidation.

Photochemical conversion using iodine and chloride sources transforms methane into methanol derivatives without high-pressure infrastructure.

Converting alkoxy alkanol impurities to carbonate ethers prevents polymerization poisoning while maintaining high dialkyl carbonate yields.

Synthesizing bio-1,2-alkanediols from renewable feedstocks using modified gamma-alumina catalysts for antimicrobial applications.

A one-pot oxidation method converts alpha-cedrene to cis-cedrene diol using potassium permanganate, preventing by-product formation that limits yield.

A main group element oxidant in an inert liquid medium achieves high substrate conversion and product selectivity without superacids.

Oxidizable pro-fragrance compounds extend fragrance duration by releasing active molecules upon ambient oxygen exposure.

Oxidative cleavage of formals and acetals in purification residue enables efficient trimethylolpropane recovery.

An iron complex with a tridentate N,N,O-ligand oxidizes C-H bonds using dioxygen from air.

Direct methane conversion via transition metal ion loaded zeolite catalyst overcomes low yield and poor selectivity of indirect processes.

A porous iron oxide-zirconia composite catalyst enables methane oxidation at room temperature and pressure to produce alcohols.

Copper tricopper complexes enable direct methane oxidation to methanol at ambient pressure, bypassing high energy consumption of thermal methods.

Segmented post-distillation recycling reduces fouling and energy consumption in cyclohexanone manufacturing.

Converting low-value lignin waste streams into high-value methanol through oxidative reactions with oxygen or ozone.

Synthetic dinuclear copper complexes mimic metalloprotein active sites to oxidize hydrocarbons, reducing the structural complexity of natural protein catalysts.

A fluidized bed reactor mixes hydrocarbon and oxygen streams to produce oxygenates via controlled oxidation.

Doped atomic monolayer catalysts achieve high selectivity in methane oxidation by preventing overoxidation at low temperatures.

A flowing liquid film plasma reactor generates hydrogen peroxide from air and water.

A scrubber absorbs unreacted methane from a methanol product stream using a water and methanol absorbent for recycling.

Ammonia borane replaces unstable reagents to allow hydroboration under air and moisture, eliminating strict anhydrous setup needs.