Banca de QUALIFICAÇÃO: DEBORA OLIMPIO DA SILVA AVELINO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : DEBORA OLIMPIO DA SILVA AVELINO
DATE: 17/03/2021
TIME: 14:00
LOCAL: Google Meet
TITLE:

Synthesis and characterization of oxides for conversion of biomass into chemical inputs

KEY WORDS:

Catalysis, Biomass, Xylose, Tin, Molybdenum

PAGES: 20
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Inorgânica
SUMMARY:

Xylose is a molecule derived from hemicellulosic biomass residues and has become prominent in biorefineries due to its potential to complement and or replace derivatives of fossil origin, 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 the present work were synthesized by the polymeric precursor method, also known as Pechini's, in the conversion of biomass to obtain high added value building blocks. The catalysts were characterized to ascertain their chemical and structural characteristics, aiming to evaluate the efficiency in the transformation of xylose in terms of conversion, selectivity and yield through the identification of the formed products. The characterization techniques used were thermogravimetric analysis (TG / DTA), infrared absorption spectroscopy (FTIR), X-ray diffraction (DRX) and nitrogen adsorption and desorption (BET and BJH), X-ray diffraction X (DRX). And in the reactions, 0.016 g xylose, 2 mL of deionized water and 1% catalyst by mass were used. The reactions will be conducted 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