1-Butyl-3-methylimidazolium hexafluorophosphate CAS: 174501-64-5

Key Applications:

Electrochemical Systems

• Hydrophobic ionic liquid electrolyte for supercapacitors, lithium‑ion batteries, and electrochemical double‑layer capacitors.
• Enhances electrochemical stability windows and supports high-voltage operation in advanced energy‑storage devices.
• Used as a medium for electrodeposition of metals and semiconductors under water‑free conditions.

Catalysis & Organic Synthesis

• Non‑volatile reaction medium for transition‑metal catalysis, including hydrogenation, coupling, and oxidation reactions.
• Facilitates biphasic catalysis due to its immiscibility with water and many organic solvents.
• Employed in green‑chemistry process intensification, enabling catalyst recycling and reduced solvent waste.

Extraction & Separation

• Hydrophobic IL for liquid–liquid extraction of aromatic hydrocarbons, metal ions, dyes, and bioactive compounds.
• Applied in selective separation of azeotropic mixtures and removal of sulfur- and nitrogen‑containing species from fuels.
• Supports CO₂ capture and gas separation processes when paired with functionalized sorbents.

Materials Science & Nanotechnology

• Solvent and templating medium for synthesizing nanoparticles, metal–organic frameworks (MOFs), and polymer composites.
• Enhances dispersion stability of nanomaterials due to strong ionic interactions and low volatility.
• Used in ionothermal synthesis routes requiring high thermal stability.

Thermal & Lubrication Applications

• High thermal stability and low vapor pressure make it suitable for heat‑transfer fluids in specialized systems.
• Acts as an additive or base fluid in advanced lubrication formulations, improving wear resistance and reducing friction.

Spectroscopy & Analytical Chemistry

• Employed as a non‑aqueous solvent for NMR, UV–Vis, and electroanalytical studies.
• Provides a controlled ionic environment for studying reaction mechanisms and ion‑pairing behavior.

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