Banca de DEFESA: ROSANGELA PEDROSA CARVALHO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ROSANGELA PEDROSA CARVALHO
DATE: 27/05/2022
TIME: 14:00
LOCAL: Ambiente Virtual
TITLE:

Boron incorporation in silicoaluminophosphate SAPO-11 and SAPO-5 molecular sieves

KEY WORDS:

Boron; incorporation; SAPO; zeolite.

PAGES: 100
BIG AREA: Engenharias
AREA: Engenharia Química
SUMMARY:

The present work intends to propose the addition of boron in crystalline structures of silicoaluminophosphates such as SAPO-5 and SAPO-11 by small changes in the synthesis process, by ion exchange or by common impregnation, seeking to verify an optimum amount to be added boron without damage to the properties of materials and the influence that the form of addition of boron has on them. The physical and chemical properties of the samples will be determined by X-ray diffractometry (XRD), to check the structures and their purity; temperature programmed desorption of NH3 (TPD-NH3), for acidity measurements; nitrogen adsorption at -196 ° C by the BET method (BET), to observe the behavior of samples in nitrogen adsorption-desorption; pore volume by the t-plot technique; Fourier transform infrared spectroscopy (FT-IR) which, together with nuclear magnetic resonance (NMR), will verify the functional groups constituting the samples and the way they bind in the structure; and thermogravimetric and thermo-differential analysis (TG-DTG) to verify the thermal behavior of the samples.

BANKING MEMBERS:
Externo à Instituição - ELEDIR VITOR SOBRINHO - UFRN
Presidente - 1545506 - ANTONIO OSIMAR SOUSA DA SILVA
Interno - 1797785 - LUCAS MEILI
Externa ao Programa - 1695821 - MARITZA MONTOYA URBINA