Thermal Decomposition of Supported ILs

To analyze these issues, ambient pressure and H V experiments with two supports were conducted (i) silica (Kieselgel 100, Merck, 0.06-0.2 mm, p 0.71 gcm Ag 335m g lcm g ) was used as example for the SILP-concept, and (ii) a Ni-catalyst for the SCILL-concept (NiSAT G33, Stid-Chemie, 37 wt% Ni on SiOj 6x6mm cylinders p 1.4gcm Aggj- 105 m g 0.38cm g , see 

L is the volume of the IL used for coating (per kg solid), and Vp q the specific initial pore volume (m kg ). For details on the stracture of supported IL systems (surface area, pore volume, and thickness of IL layer) we refer to the contribution Pore volume and surface area of supported ILs systems of this book. 

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The knowledge on evaporation and thermal stability of supported ILs is still at its infancy, and more combinations of ILs and solids should be investigated. Until now, the knowledge on the decomposition products is also limited, and more research is needed by techniques such as NMR or IR. In future, also long-term experiments with supported ILs in a fixed bed with a throughput of a gas at ambient... 

Trevorrow, L., J. Fischer, and J. Riha. 1963. Laboratory investigations in support of fluid bed fluoride volatility processes. III. Separation of gaseous mixtures of uranium hexafluoride and plutonium hexafluoride by thermal decomposition, 14. Argonne, IL Argonne Natl. Lab. United States Atomic Energy Commission [Published by the Atomic Energy Commission and Its Contractors], ANL-6762. 

Fabrication of Self-Supporting Oxide Targets by Cationic Adsorption in Cellulosic Membranes and Thermal Decomposition," Thomas C. Quinby in Proceeding of Workshop 1983 of the International Nuclear Target Development Society, Argonne National Laboratory, Argonne, IL, Sept. 7-9, 1983. ANY/PHY-84-2 ... 

For ILs with a low stability regarding thermal decomposition and/or relatively low vapor pressures, HV experiments (<10 Pa) should be conducted, for example, with a magnetic suspension balance (MSB y)- The schematic setup of these two methods used in this work to evaluate the thermal stability and vapor pressure of pure and supported ILs are shown in Figure 6.2. For details see [25-27, 32]. 

The API-ILs studied here are noncovalendy supported on the silica carrier forming easily handled solids with improved thermal stabihty when compared to the neat compounds (Table 19.2). The decomposition temperatures were determined by TGA and are reported as (decomposition temperature) or T5%onset onset temperature for 5% decomposition) [17a]. For example, the 10 wt% [P4444][Ibu] adsorbed on SiO2-90 has a of 386°C, which is 150 °C higher than that... 

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