Sanchez Vicente, Yolanda, Alonso-Pastor, Oscar, Pando, Concepción and Cabañas, Albertina (2016) Phase behaviour of the two binary systems formed by CO2 and the silane precursors N-[3-(trimethoxysilyl)propyl]aniline or (3-mercaptopropyl)trimethoxysilane. The Journal of Chemical Thermodynamics, 103. pp. 152-156. ISSN 0021-9614
Full text not available from this repository. (Request a copy)Abstract
High-pressure phase behaviour data are reported for the binary systems CO2 + N-[3-(trimethoxysilyl)propyl]aniline (TMSPA) and CO2 + (3-mercaptopropyl)trimethoxysilane (MPTS). The organosilanes TMSPA and MPTS are employed to functionalise with the amino and mercapto groups, respectively, the surface of inorganic materials using supercritical CO2 as a solvent and reaction medium. The measurements were conducted in a high-pressure variable volume view cell at T = 313.2, 323.2, and 333.2 K and pressures up to p = 25.0 MPa. The CO2 mole fraction in the binary mixture was varied from 0.40 to 1.0. For both silanes, the immiscibility region enlarges as the temperature rises. For a given pressure and temperature MPTS is considerably more soluble in CO2 than TMSPA. For instance, if a temperature of 313.2 K is chosen a pressure of 8.7 MPa will suffice to assure the solubilisation of MPTS in the whole mole fraction range whereas a pressure of 21.0 MPa will be necessary for the solubilisation of TMSPA. The Peng-Robinson equation of state was used to correlate the phase equilibrium data.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | High-pressure phase behaviour, Supercritical carbon dioxide, Organosilane solubility, N-[3-(Trimethoxysilyl)propyl]aniline, (3-Mercaptopropyl)trimethoxysilane |
| Subjects: | H800 Chemical, Process and Energy Engineering |
| Department: | Faculties > Engineering and Environment > Mechanical and Construction Engineering |
| Depositing User: | Elena Carlaw |
| Date Deposited: | 01 Nov 2019 14:36 |
| Last Modified: | 01 Nov 2019 14:36 |
| URI: | http://nrl.northumbria.ac.uk/id/eprint/41338 |
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