Organic-Compounds/Hydrides/Coordination-Complexes Catalysts TRIZ Cases

A nickel catalyst with phosphine ligands dimerizes ethylene into butene-1.

Replacing iodine with titanium tetrachloride prevents reactor choking and improves plant throughput.

A method converts ethanol to ethylene for oligomerization into heavy olefins, which hydro-processes into lubricant base stocks.

Silane or borane compounds react with deactivated acidic catalyst to separate conjunct polymer, avoiding solid handling issues.

Ortho-substituted amino phosphine ligands suppress internal olefin formation during chromium-catalyzed ethylene oligomerization.

Heterocyclic polar compound additive modifies metal precursors on support material to enable in situ catalyst activation during hydroprocessing.

Phenolic catalyst modifies polyaspartic flooring reaction kinetics to extend work time while maintaining short walk-on time.

A bis-phosphine catalyst composition lowers the normal to iso aldehyde ratio during olefin hydroformylation.

A supported hybrid metallocene catalyst prepared by treating a support with trialkyl aluminum and alkyl aluminoxane.

Unsaturated carboxylic acid salts neutralize phosphorus acidic by-products to stabilize catalyst activity and reduce ligand degradation.

Sequential azole substitution on dihalogenated benzene yields unsymmetrical bis(azolium) salts for metalation into CCC-NHC pincer complexes.

Alcohol-based neutralization of raw ethylene dimerization effluent prevents catalyst residue contamination and reduces secondary reactions.

A nitrogen-functionalized catalyst system enables high-selectivity hydrogenolysis of tetrahydrofurfuryl alcohol to 1,5-pentanediol.

A bi-metallocene catalyst system combines bridged and unbridged metallocenes to synthesize polyolefins with tailored mechanical properties.

Covalent organic framework films form via co-evaporation of monomer pairs, addressing slow synthesis and low catalytic activity of ceramic powders.

A zinc catalyst formulation with alcoholate ligands derived from polyols and a metal compound additive.

Replacing metal catalysts with a quaternary phosphonium salt eliminates metal ion contamination in propylene glycol phenyl ether synthesis.

Engineered heme protein variants resolve site-selectivity trade-offs by enabling high-turnover, enantioselective carbene C—H insertion at ambient temperatures.

Diphosphonite ligands coordinate rhodium catalysts to drive olefin conversion into aldehydes with high selectivity.

Cellulose-derived chiral auxiliaries resolve synthesis complexity and atom economy trade-offs while maintaining high diastereoselectivity.

Tungsten oxide particles and a water-soluble copper compound prevent discoloration of blue-based materials while preserving VOC removal.

Nucleophilic substitution on isobutylene polymers without solvents produces functionalized chains via phase transfer catalysis.

Halogen-substituted catalyst system improves ethylene oligomerization selectivity by resolving solubility issues in aliphatic hydrocarbons.

Polydentate ligand coordination compounds narrow product distribution ranges to enhance 1-hexene and 1-octene yields.

Titanium catalysts with cyclic esters broaden molecular weight distribution, resolving narrow distribution limits that reduce melt tension.

Thermosetting epoxy resin composition uses an isocyanate curing agent and oxazolidone catalyst to form cured products with stable high stiffness.

Transition metal complex catalysts degrade nitrile rubber chains via metathesis to reduce molecular weight.

Quaternary salt co-catalyst reduces polymer fouling to maintain reactor efficiency and 1-octene selectivity.

Transition metal catalyzed astacin reduction yields pure astaxanthin, resolving low yield and separation complexity.

Acridane-based PNP ligands stabilize flexible T-shaped metal complexes, enabling reliable binuclear bonding activation reactions.

Silicon-bridged ansa-metallocene compound overcomes low activity and poor microstructure control to produce high molecular weight polyolefins.

Host-guest interaction between crown ether and ammonium salt sequesters HBF4 to induce latency, resolving rapid Lewis acid curing.

Solution-polymerizing epoxide and carbon dioxide using a cobalt complex to simplify post-treatment processes.

Reductive depolymerization converts complex lignin into valuable small molecules without harsh conditions or excessive heat loss.

Neodecanoic acid ligands replace toxic 2-ethylhexanoic acid to lower emissions while maintaining catalytic activity.

Porous supports immobilize buffered ionic liquid catalysts to resolve the contradiction between catalytic activity and product separation ease.

Hyperbranched olefinic fluid thermal grease reduces migration and contamination while lowering costs compared to silicone alternatives.

An amide-based molecular weight controller regulates polyamide chain growth during anionic polymerization.

Replacing precious metals with base metal catalysts in non-reducible solvents to improve conversion efficiency while avoiding side product formation.

A conductive roll uses a low-tin organotin catalyst to react polyether-based polyol with diisocyanate.

Substituted allylic alcohols mediate alkylaluminium reactions, controlling exothermicity and eliminating solvent impurities.

A dimeric aluminium salen catalyst incorporates a quaternary ammonium co-catalyst to synthesize cyclic carbonates from epoxides and carbon dioxide.

A chromium compound coordinates with meta-alkoxy substituted n-aryl bis-diphosphinoamine ligands to form a catalyst system.