Utilize este identificador para referenciar este registo: http://hdl.handle.net/10362/13767
Registo completo
Campo DCValorIdioma
dc.contributor.advisorEsteves, Isabel-
dc.contributor.advisorMota, José-
dc.contributor.advisorRibeiro, Rui-
dc.contributor.authorSetim, Alison Jacqueline Pestana-
dc.description.abstractIn this work, a volumetric unit previously assembled by the research group was upgraded. This unit revamping was necessary due to the malfunction of the solenoid valves employed in the original experimental setup, which were not sealing the gas properly leading to erroneous adsorption equilibrium measurements. Therefore, the solenoid valves were substituted by manual ball valves. After the volumetric unit improvement its operation was validated. For this purpose, the adsorption equilibrium of carbon dioxide (CO2) at 323K and 0 - 20 bar was measured on two different activated carbon samples, in the of extrudates (ANG6) and of a honeycomb monolith (ACHM). The adsorption equilibrium results were compared with data previously measured by the research group, using a high-pressure microbalance from Rubotherm GmbH (Germany) – gravimetric. The results obtained using both apparatuses are coincident thus validating the good operation of the volumetric unit upgraded in this work. Furthermore, the adsorption equilibrium of CO2 at 303K and 0 - 10 bar on Metal-Organic Frameworks (MOFs) Cu-BTC and Fe-BTC was also studied. The CO2 adsorption equilibrium results for both MOFs were compared with the literature results showing good agreement, which confirms the good quality of the experimental results obtained in the new volumetric unit. Cu-BTC sample showed significantly higher CO2 adsorption capacity when compared with the Fe-BTC sample. The revamping of the volumetric unit included a new valve configuration in order to allow testing an alternative method for the measurement of adsorption equilibrium. This new method was employed to measure the adsorption equilibrium of CO2 on ANG6 and ACHM at 303, 323 and 353K within 0-10 bar. The good quality of the obtained experimental data was testified by comparison with data previously obtained by the research group in a gravimetric apparatus.por
dc.subjectEquilibrium adsorptionpor
dc.subjectAdsorption isothermspor
dc.subjectAdsorbent materialspor
dc.subjectVolumetric methodpor
dc.titleUpgrade of an experimental volumetric unit for gas adsorption equilibrium studiespor
thesis.degree.disciplineEngenharia Química e Bioquímicapor
thesis.degree.levelGrau de Mestrepor
Aparece nas colecções:FCT: DQ - Dissertações de Mestrado

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
Setim_20014.pdf1,55 MBAdobe PDFVer/Abrir

FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.