Preparation By OH Group Elimination TRIZ Cases
- Glycerin Hydroprocessing for Diesel and Gasoline Bio-Components
Hydroprocessing converts excess glycerol into linear paraffinic hydrocarbons, improving oxidation stability and cold flow in diesel blends.
- Silver Tungstate Catalyst System for Low-Temperature Glycol Production
Silver tungstate and nickel catalysts enable glycol production from saccharides at lower temperatures, reducing energy consumption and by-product formation.
- Reactor Feed Pipe Cooling to Prevent Saccharide Degradation
Local cooling at the reactor entry point prevents thermal degradation of saccharides, eliminating fouling and reducing maintenance downtime.
- Alkali Metal Phosphate Stabilization for Glycerol Hydrogenolysis Catalyst
Alkali metal phosphate stabilizes noble metal solid acid catalysts during glycerol hydrogenolysis, preventing deactivation and maintaining high selectivity.
- Glycol Production Solvent Composition Prevents Catalyst Fouling
Adding 25 to 75 weight percent alcohol to water dissolves carbonaceous materials, preventing catalyst deactivation and maintaining high glycol yields.
- Propylene Glycol Hydrogenolysis Stream Purification
Remove sodium salts from by-product streams via chromatography before recycling unreacted polyols, preventing catalyst contamination and improving purity.
- Lignocellulosic Biomass Pretreatment for Glycol Production
Organosolv pretreatment extracts lignin from biomass to enhance cellulose accessibility, reducing acid recovery costs and wastewater treatment requirements.
- In-situ Hydrogen Generation for Glycerol Hydrogenation
Crude glycerol stream yields 1,2-propanediol via in-situ hydrogen generation from methanol and water, eliminating external hydrogen supply costs.
- Skeletal Copper Catalyst for Glycerol Hydrogenation
Promoted skeletal copper catalysts convert glycerol to propanols, overcoming degradation issues.
- Biomass Conversion Catalyst Tolerates Ash and Degradation Products
Group VIII metal catalyst converts biomass into oxygenated compounds while tolerating sugar degradation products and ash impurities.
- Silver Tungstate Catalyst for Saccharide Conversion
A composite catalyst system using silver tungstate and transition metals to convert saccharides into glycols.
- 5-Arylpentanols Synthesis via Catalytic Hydrogenation
Catalytic hydrogenation of 2-aryl-4-hydroxytetrahydropyrans replaces complex multi-step syntheses requiring expensive reagents.
- Bi-functional Catalyst for Glycol Production
A bi-functional catalyst system converts carbohydrate feed into ethylene glycol and propylene glycol.
- Aromatic Yield from Oxygenate Mixtures via H:C Ratio Control
Optimized oxygenate mixtures with specific hydrogen-to-carbon ratios drive high aromatic yields through selective condensation pathways.
- Hydrazine-Reduced Hydrogenation Catalyst for Glycol Production
A hydrazine-reduced soluble hydrogenation catalyst supplements declining activity in glycol production reactors.
- Glycol Production Buffer Segmentation for pH Control
Segmenting heavy organic acids in glycol buffers stabilizes pH while preventing tungstate precipitation.