Preparation By Halogen Halide Addition TRIZ Cases

Slow activation and mass-transport limits hinder halogenated-hydrocarbon fluorination; staged HF and oxidant treatment improves catalyst stability and activity.

Using acetone in gold catalyst impregnation alters wetting and dispersion, reducing hot spots and deactivation during VCM production.

This case uses supported Pt(II) complexes to improve acetylene hydrochlorination while avoiding mercury and chloride contamination.

This case uses staged drying, HF, and oxidant treatment to improve catalyst activity, stability, and mass transport in fluorination.

This VCM process uses KO drum evaporation to cool and reduce feed volume before compression, limiting fouling and downtime.

Sterically hindered amine catalysts preserve hydrohaloolefin blowing agents and surfactants for uniform, collapse-resistant foams.

A subcritical CO2 process extracts high-cannabinoid full spectrum components from cannabis using controlled pressure and temperature settings.

Composite antimony pentachloride and Lewis acid catalyst reduces induction period while suppressing pentafluoro byproduct formation during 244bb synthesis.

A halogenation method converts fluorinated alkenes into partially fluorinated compounds using iodine or bromine salts with acid catalysts.

Co-depositing iron and magnesium chlorides on chromia-alumina enables high conversion rates and selectivity in continuous 1,1,2-trichloroethane fluorination.

Hydrogen fluoride solvents suppress side reactions during fluorination of 1,2,3,4-tetrachlorobutane, improving yield and purity.

An amine-carboxylic acid adduct catalyst prevents blowing agent decomposition during storage, maintaining foam cell structure uniformity.

Sulphur ligands stabilize gold activity while eliminating mercury toxicity and removing aqua regia from the manufacturing process.

Germanium tetrafluoride fluorinates pentachloroethane with aluminum trichloride catalysts, eliminating hydrogen chloride disposal costs.

Continuous dual-reactor fluorination with catalysts resolves batch processing bottlenecks to enable scalable, efficient HFO-1234yf manufacturing.

Metal catalyst and refluxing telogen in a distillation column narrow chain length distribution while eliminating free-radical initiator by-products.

Transition metal catalyst decomposes cyclobutane polymers into diene monomers, avoiding energy-intensive pyrolysis and carbon release.

Sulfate ester formation converts reactive olefins into separable intermediates within sulfuric acid alkylation units.

Organic base mediation prevents double bond isomerization during alcohol chlorination, maintaining product purity while eliminating expensive metal salt costs.

Eliminating reaction solvents and catalysts simplifies separation operations while maintaining high yield and purity of 1,2,3,4-tetrachlorohexafluorobutane.

Even zinc distribution prevents aggregation during coprecipitation, maintaining stability while boosting productivity.