Banca de DEFESA: DEBORA OLIMPIO DA SILVA AVELINO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : DEBORA OLIMPIO DA SILVA AVELINO
DATE: 27/07/2021
TIME: 14:00
LOCAL: Google Meet
TITLE:

SYNTHESIS AND CHARACTERIZATION OF SnO2, MoO3 AND SnO2-MoO3, VIA THE PECHINI METHOD USING GLYCEROL AS A POLYALCOHOL, AND ITS USE IN THE CONVERSION OF XYLOSE

KEY WORDS:

Catalysis, Biomass, Xylose, Tin, Molybdenum

PAGES: 80
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Inorgânica
SUMMARY:

Xylose is a molecule that comes from the residues of hemicellulosic biomass and has become prominent in the
biorefinery because of its potential to complement and/or replace fossil-derived derivatives, such as oil.
In these transformations, the use of heterogeneous catalysis from an economic and environmental perspective offers several
benefits linked to the principles of green chemistry. The catalysts studied in this work were
synthesized by the method of polymeric precursors, also known as Pechini, in the conversion of
biomass to obtain high value-added building blocks. The catalysts were characterized
to investigate its chemical and structural characteristics, aiming at evaluating the efficiency in the transformation of the
xylose in terms of conversion, selectivity and yield through the identification of the formed products. At
characterization techniques used were thermogravimetric analysis (TG/DTA), absorption spectroscopy in the
infrared region (FTIR), X-ray diffraction (DRX) and nitrogen adsorption and desorption (BET and BJH),
X-ray diffraction (XRD). And in the reactions, 0.016 g xylose, 2 mL of deionized water, 1% of catalyst were used
in large scale. The reactions will be carried out at 150 °C, varying the reaction time. The products obtained were
quantified using high performance liquid chromatography (HPLC)

BANKING MEMBERS:
Externo ao Programa - 1545506 - ANTONIO OSIMAR SOUSA DA SILVA
Interna - 1869296 - CINTYA D'ANGELES DO ESPIRITO SANTO BARBOSA
Presidente - 1515173 - SIMONI MARGARETI PLENTZ MENEGHETTI