Journal
APPLIED SCIENCES-BASEL
Volume 12, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/app12115644
Keywords
adsorption; sorption capacity; water vapor; silica gel; carbon nanotubes; CNT; pore structure
Categories
Funding
- National Science Center, Poland [2018/29/B/ST8/00442]
- Strata Mechanics Research Institute of the Polish Academy of Sciences
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This paper presents a study on the application of water vapor as a high potential energy gas, emphasizing its dependence on temperature and pressure. The sorption experiments conducted on carbon nanotubes enriched silica gels show that the addition of carbon nanotubes reduces the sorption capacity, with a greater impact at higher temperatures.
This paper presents a study of the application of the properties of water vapor as a gas with high potential energy, strongly dependent on temperature and pressure. Analyses of water vapor sorption on two types of silica gels (SG) (90 wt.%) enriched with carbon nanotubes (CNTs) (10 wt.%), in the context of their application in the design of adsorption beds in adsorption cooling and desalination systems were conducted. The sorption experiments were performed by gravimetric method at a relative humidity of 0% < RH < 100% and temperatures of 298 K, 313 K, and 333 K. The addition of CNTs to SG caused a decrease in the sorption capacity and depended on the temperature. As the process temperature increased, a lower SG/CNT mixtures sorption capacity to vapor was obtained. The highest influence of CNTs was observed at the highest temperature, and the average decrease of sorption capacity was several percent. The ratio of SG/CNT sorption capacity to pure SG values was below 1 in most measurements.
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