Preparation By Hydrogen Halide Split-Off TRIZ Cases

Replacing caustic scrubbers with water washing and sulfuric acid drying suppresses 3,3,3-trifluoropropyne formation in HCFO and HFO production.

Metal oxide catalysis converts HCFC-225aa to HCFC-225ca at 290°C, avoiding halogen exchange byproducts common with aluminum halide systems.

Chlorinating 3,3,3-trifluoropropene above 2 bar pressure in the liquid phase to form 2,3-dichloro-1,1,1-trifluoropropane with selectivity exceeding 90 percent.

Replacing expensive starting materials with 2,3-dichloro-1,3-butadiene reduces production costs while maintaining high product selectivity.

Distillation separates 1,1,1,2,2-pentafluoropropane from heavy chlorinated impurities, preventing catalyst degradation and reducing waste.

Catalyst-free thermal pyrolysis converts hydrofluorochloropropanes to fluoropropenes, avoiding chlorine and reducing ozone depletion potential.

Integrated reactor system performs sequential hydrogenation and dehydrofluorination to produce fluorinated olefins while reducing energy consumption.

Alternating chlorination and dehydrochlorination reactions convert 1,3-dichloropropene into tetrachloropropene intermediates while reducing waste generation.

Replacing mercury with barium and phosphorus on activated carbon via polymerization improves catalytic activity while eliminating environmental pollution.

A catalyst-free dehydrohalogenation process converts halofluoroalkanes to fluoroolefins using caustic agents and controlled mixing power.

Segmented gas phase fluorination prevents catalyst inactivation during HFO-1234ze production, eliminating waste liquid from side reactions.

Controlling water content below 300 ppm maintains catalytic activity during continuous 2-chloro-3,3,3-trifluoropropene synthesis without selectivity loss.

A single reactor system combines chlorination and dehydrochlorination steps to produce 1,1,2,3-tetrachloropropene.

Blending pentachloropropane with hydrogen fluoride creates an azeotrope-like mixture that maintains constant boiling points despite unpredictable formation.

Optimized chromium oxide catalysts suppress unwanted isomer formation during dehydrofluorination, extending catalyst lifetime and improving yield.

A halopropene fluorination process using HF and Cl2 to produce HFC refrigerants.

Rapid contact with a heater surface above 850 F reduces carbon build-up, maintaining reactor uptime while converting HCFC-244bb to HFO-1234yf.

Sequential chlorination using polyvalent antimony and ferric chloride catalysts reduces reaction time and equipment costs for pentachloropropane production.

Sequential fluorination reactions in a single reactor reduce hydrogen chloride separation needs and heating energy requirements.

A catalyst comprising alpha-alumina and noble metals enables fluoroolefin hydrogenation with low chloride content.