Organic Compound Preparation TRIZ Cases
- Heterogeneous Catalyst Regeneration for Diamine Synthesis
Ammonia and hydrogen treatment restores activity in heterogeneous metal catalysts, resolving yield loss from aldehyde reduction.
- Polyglycerol Ester Purification via Basic Solution Refining
Basic solution refines polyglycerol fatty acid esters, neutralizing excess fatty acids to prevent emulsion formation and yield loss.
- Complex Oxide Catalyst Gradient Design for Acrylic Acid Synthesis
Gradient active component distribution manages hot spot temperature in the catalyst bed, extending life while maintaining high acrylic acid yield.
- Methanol Synthesis Reactor Segmentation and Inter-bed Heat Exchange
Segmented adiabatic beds with inter-bed heat exchange bodies quench effluent to prevent hot spots and maximize conversion yields.
- Aldehyde Vapor Fractionator Ligand Separation
Segmented fractionation with liquid aldehyde reflux separates heavy by-products and catalyst ligands, preventing downstream contamination.
- 1,6-Hexanediol Distillation for Low Aldehyde Content
Controlling oxygen and catalyst levels during distillation reduces aldehyde impurities in 1,6-hexanediol, improving plastic color stability.
- Molybdenum Compound Layer Suppresses Catalyst Sublimation
A molybdenum compound layer supplies volatile compounds to a composite oxide catalyst, suppressing sublimation losses and maintaining activity.
- Propylene Ammoxidation Catalyst Uniformity via Spray Drying
Spray drying dissolves metal oxide precursors to form uniform catalyst particles with improved mechanical strength.
- Hypericin Synthesis via Protohypericin Salt Photoreaction
Convert protohypericin salt to hypericin using visible light irradiation in a transparent column reactor.
- Lignin Depolymerization via Oxidative Catalytic Fractionation
Oxidative catalytic fractionation converts lignin into phenolic monomers while preserving carbohydrate quality.
- Haloketone Synthesis via Phosphoric Acid Cleavage
Replacing sulfuric acid with phosphoric acid for keto ester cleavage prevents equipment corrosion and fluoride release while maintaining high yields.
- Series-Connected Isothermal and Adiabatic Reactors for Nitro Compound Hydrogenation
Segmented isothermal and adiabatic reactors achieve high conversion rates by utilizing sudden temperature changes to monitor reaction progress.
- Mixed Oxide Catalyst Selectivity for Acrolein Production
A mixed oxide catalyst incorporating chromium and phosphorus enables gas-phase alkane oxidation.
- 1,4-Cyclohexanedimethanol Production via Recycled Alcohol Esterification
Esterification of terephthalic acid with recycled (4-methylcyclohexyl)methanol enables mild-condition hydrogenation for 1,4-cyclohexanedimethanol synthesis.
- Low-Cost Telechelic Polyisobutylene Initiator Synthesis
Synthesizes 1,3-di(chloropropyl)-5-tert-butylbenzene via Friedel-Crafts alkylation and chlorination steps.
- Alkali Metal Hydride Coupling for 2-Iodo Aryl Ether Synthesis
Alkali metal hydrides drive phenol coupling with diiodoarenes at room temperature, eliminating metal catalysts and preventing product contamination.
- Biphasic TATB Synthesis via Ammonia Gas and Surfactant
Ammonia gas reacts with TCTNB in a biphasic surfactant system to form TATB crystals, resolving safety hazards and yield stability trade-offs.
- 2-(Aminomethylidene)-4,4-difluoro-3-oxobutyric Ester Synthesis
Optimizing reaction parameters and using preliminary action improves yield and selectivity while simplifying isomer separation.
- Electronic Grade ADG Production via Feedstock Filtration
Installing a 1.5 µm filter on the diethylene glycol supply line prevents metal ion contamination, ensuring consistent electronics-grade purity.
- Selective Oxidation of Terpene Derivatives
Copper catalyst mediates allylic oxidation of terpenes, resolving the contradiction between rapid reaction rates and high regioselectivity.
- MMA Distillation with Acid Catalyst for Acetal Removal
Adding strong acid to distill MMA hydrolyzes acetals, reducing impurities below 20 ppm while recovering methanol.
- Ruthenium Catalyst for Imine Hydrogenation
A ruthenium catalyst system reduces imines to amines using specific ligand configurations.
- Acid-Catalyzed Ring-Opening of 4-Hydroxy-6-Substituted-2-Pyrones
Acid catalysts drive ring-opening of 4-hydroxy-6-substituted-2-pyrones to yield 2,4-diones from renewable feedstocks without distillation.
- Fluoro Group Polymer Prevents Layer Intermixing in OLED Wet Processing
A fluoro group-containing polymer stabilizes intermediate layers during organic light emitting device fabrication.
- VPO Catalyst Solvent Treatment for Maleic Anhydride
Solvent contact with specific dielectric constants boosts maleic anhydride yield by 5% while avoiding structural complexity.
- Catalyst Carrier Preparation via Potassium Removal
Treating thermally decomposable materials with water removes potassium contaminants, resolving batch-to-batch inconsistencies in olefin epoxidation catalysts.
- Rhodium-Catalyzed Direct C-H Amination
Rhodium catalysis enables direct C-H amination without pre-functionalization, eliminating multi-step sequences and harsh conditions.
- Oxydicarboxylic Acid Synthesis via Platinum Catalyzed Oxidation
Platinum catalyzed oxidation of oxydiols yields high purity oxydicarboxylic acids while minimizing glycolic acid formation.
- Branched Alcohols from Vinylidene Olefins via Cobalt Hydroformylation
Hydroformylation of vinylidene olefins using an unmodified cobalt catalyst produces branched alcohols with controlled internal branching.
- Ammonia Methanol Synthesis Catalyst for Acetonitrile
A composite catalyst system converts ammonia and methanol into acetonitrile and hydrogen cyanide using synergistic metal components.
- Bidentate Phosphine Ligand Catalyst for Carbonylation
Specific aryl bridges and tertiary carbon substituents on the ligand prevent polymerization while maintaining high turnover numbers in acid or ester production.