Critical Point of Fluid Confined in Nanopores: Experimental Detection and Measurement
| Autor: | Hertanto Adidharma, Sugata P. Tan, Morteza Dejam, Xingdong Qiu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Capillary condensation Isochoric process 02 engineering and technology Mechanics 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Nanopore General Energy Differential scanning calorimetry Criticality Critical point (thermodynamics) Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 123:9824-9830 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.9b00299 |
| Popis: | For the first time, the presence of the critical point (CP) of fluids confined in nanopores is unambiguously demonstrated and measured using a differential scanning calorimeter with an isochoric cooling procedure. The behavior of the CP of CO2 and C2H6 in SBA-15 is found to deviate from theoretical predictions. The heat involved in capillary condensation is also discussed. The new and simple method of measurement introduced in this study opens the way to further investigate the criticality of fluids confined in nanopores. |
| Databáze: | OpenAIRE |
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