Banca de QUALIFICAÇÃO: FERNANDA MONTEIRO FREITAS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : FERNANDA MONTEIRO FREITAS
DATA : 13/12/2017
HORA: 14:00
LOCAL: AUDITÓRIO DO NUPEG
TÍTULO:

“Production and caracterization of a ceramic tubular membrane for gas separation”

PALAVRAS-CHAVES:

Tubular membrane, ceramic membrane, oxygen permeation

PÁGINAS: 35
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
RESUMO:

Several industrial processes, especially those involving combustion, can be optimized with the use of high purity oxygen, ensuring a lower energy expenditure. Cryogenic distillation of air is the most consolidated process currently in obtaining pure oxygen. However, the high energy expenditure associated with this process motivates the application of air rather than isolated oxygen. Thus, new alternatives for oxygen separation are the subject of recent research, including membrane separation processes that have some advantages: they are less energy-intensive, have lower investment costs and are modular. The use of membrane reactors represents a promising alternative for reforming reaction processes, making it possible to couple separation and reaction steps in a single operation, as well as better control of contact between species. The objective of the proposed research is to prepare a dense ceramic tubular membrane by a relatively simple method, in order to study its permeability to oxygen. The choice of material was based on the potential capacity of certain ceramics to transport oxygen. Therefore, it is intended to fabricate the tubular membranes and to characterize them by different techniques: thermal analysis (TG, DTA, DSC and Dilatometry), X-ray diffraction (XRD), with microstructure refinement through the Rietveld method, by Electron Microscopy (EDS), BET method, Infrared Spectroscopy with Fourrier Transform, and Near Infrared (FTIR / NIR), laser granulometry and Electrical Impedance Spectroscopy (EIS) analysis. Finally, oxygen permeability tests will be performed in a system at high temperatures (between 800 and 1100 ° C). The operating conditions will be established from a study of the process variables: temperature, pressure gradient and gas flow.

 

MEMBROS DA BANCA:
Presidente - 2929066 - ANDRE LUIS LOPES MORIYAMA
Externo à Instituição - ANGELICA BELCHIOR VITAL - UFRN
Interno - 349801 - CARLSON PEREIRA DE SOUZA