Urea Derivatives Preparation TRIZ Cases
- CO2 Carbonylation via H2S Catalysis
H2S mediates CO2 activation for carbonyl synthesis, replacing toxic reagents and reducing safety hazards.
- Ammonia Synthesis Using Flue Gas Nitrogen and Green Hydrogen
Recovers nitrogen from reformer flue gas for ammonia synthesis, eliminating energy-intensive air separation and reducing carbon footprint.
- Ammonium Carbamate Concentration via Melamine Gas Absorption
Concentrating aqueous ammonium carbamate by absorbing melamine gas stabilizes pressure fluctuations and eliminates extra water requirements.
- Carmustine Synthesis via Carbonyldiimidazole and Triphosgene
Replacing phosgene with triphosgene and CDI eliminates toxic gas handling while maintaining high yield.
- Urea Adduct Recycling via Solvent Polarity Adjustment
Adjusting solvent polarity separates urea from adducts, overcoming low recovery rates and high energy consumption in water-based processes.
- Substituted Urea Derivatives for Selective Mu Opioid Receptor Binding
Substituted urea derivatives minimize beta-arrestin recruitment at mu opioid receptors, reducing respiratory depression and tolerance risks.
- Guanidine Derivatives as DDAH Inhibitors for Disease Treatment
Formula I guanidine compounds inhibit DDAH to treat ischaemia-reperfusion injury and cancer by regulating nitric oxide synthesis.
- Substituted Phenylurea Synthesis via Segmented Melt-Phase Reactor
Segmented melt-phase reactor with static mixers synthesizes substituted phenylureas while eliminating solvent removal and biphenylurea by-products.
- Immobilized Chelating Resins for Trivalent Metal Ion Removal
Neutral attachment chemistries preserve binding affinity, preventing electrostatic repulsion of target ions like Al3+ and Pu4+.
- BOF Gas Conversion to Urea via Water Gas Shift
Separation-enhanced water gas shift converts blast furnace gas into ammonia feedstock, cutting urea production CO2 emissions by 33 percent.
- Vacuum Condenser Steam Condensate Injection for Urea Plant Ammonia Absorption
Upstream steam condensate injection reduces water intake by forty percent while enabling purge gas transfer to treatment systems.
- Urea Production Using Ammonia-CO2 Absorption
Treating combustion smokes with aqueous ammonia forms ammonium carbamate, eliminating complex ethanolamine washing systems.
- Reagent for Organic Synthesis with Phase-Change Separation
A reagent reversibly changes from liquid to solid phase via temperature or composition shifts, enabling homogeneous organic synthesis reactions.
- Urea Ammonium Sulphate Viscosity Reduction via Aluminium Salts
Aluminium salts lower urea ammonium sulphate viscosity, eliminating energy-intensive water evaporation and extending reactor lifespan.
- Integrated Ammonia-Urea Process Heat Integration
Heat integration between syngas and urea solution reduces operational pressure and energy consumption.
- Radiolabeling Process for PSMA Compounds via Acidic Oxidation
Acidic oxidation of precursors with iodine sources achieves over 75% yield, resolving low production efficiency in radiopharmaceutical synthesis.
- Bifunctional Binaphthyl Amine Thioureas for Enantioselective Synthesis
Bifunctional binaphthyl-derived amine thioureas catalyze Michael additions to yield chiral products, eliminating metal toxicity and complex separation steps.
- Cyclic Biocement Process for Low-Energy Ammonia and Urea Production
A cyclic biocement process decomposes calcium carbonate to produce urea and ammonia using integrated industrial reactions.
- Melamine Offgas Pipeline Corrosion Control via Carbamate Injection
Injecting carbamate solution into washed melamine offgases forms a protective liquid film that flushes the pipeline, preventing corrosion from condensation.
- Fluidized Bed MU-IBDU Granule Formation
Continuous fluid bed granulation produces methylene urea-isobutylene diurea granules with improved morphology and crush strength.
- Flash Crystallization for Low-Biuret Urea Powder
Flash crystallization yields low-biuret urea powder, reducing transportation costs by eliminating water volume.
- Urea Plant Revamp via CO2 Stripping Agent Injection
A urea production plant revamps its thermal stripping section by injecting a minor carbon dioxide feed portion as a chemical stripping agent.
- Continuous Isocyanate Modification Using Ionic Liquid Catalysts
Continuous isocyanate modification uses ionic liquid catalysts to prevent decomposition by-products and preserve NCO content during high-rate production.
- NAMPT Enzyme Agonists for Neuroprotection via NAD Biosynthesis
Aromatic NAMPT enzyme agonists activate endogenous NAD biosynthesis, resolving the high-dosage safety constraints of direct precursor supplementation.
- Self-Assembling Synthetic Anion Channels for Chloride Transport
Self-assembling compounds form functional anion channels in lipid bilayers through hydrogen bonding.