Supported Ionic Liquid Phase Catalysis in Hydroformylation Processes
Summary
Supported ionic liquid phase (SILP) catalysis represents a sophisticated hybrid approach that combines the advantages of homogeneous catalytic activity with heterogeneous ease of separation. In hydroformylation—the addition of synthesis gas (a mixture of carbon monoxide and hydrogen) to olefins to yield aldehydes—SILP systems immobilise a thin film of ionic liquid containing the active metal complex onto a high-surface-area support, such as silica or monolithic ceramics. The ionic liquid layer stabilises the metal catalyst, suppressing leaching and enhancing selectivity towards linear aldehydes. The porous support ensures efficient mass transport, mechanical stability and continuous operation. This methodology has attracted attention for its potential to improve catalyst lifetimes, reduce solvent usage and enable continuous flow processes. Recent innovations in support design, ionic liquid formulation and reactor integration have advanced the field towards industrial applicability, promising greener routes to key intermediates in fine chemicals, fragrances and pharmaceuticals.
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Supported Ionic Liquid Phase Catalysis in Hydroformylation Processes publication trend
The graph below shows the total number of articles in supported ionic liquid phase catalysis in hydroformylation processes across all publications each year (not limited to Nature Index journals).
Technical terms
Hydroformylation: Catalytic addition of hydrogen and carbon monoxide to an alkene to form aldehydes.
Supported Ionic Liquid Phase (SILP): Catalytic approach where an ionic liquid film containing a homogeneous catalyst is immobilised on a solid support.
Turnover frequency (TOF): Number of substrate molecules converted per catalytic active site per unit time.
Monolithic support: Single-piece porous structure used to host catalytic layers and facilitate continuous flow.
References
- Influence of Support Structure on Catalytic Performance of Supported Liquid-Phase (SLP) Catalysts in Hydroformylation of 1-Butene. Topics in Catalysis (2023).
- Flowing Forward: Continuous Synthesis of and with Ionic Liquids. European Journal of Organic Chemistry (2024).
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