Banca de QUALIFICAÇÃO: CARLOS LEONARDO LUZA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : CARLOS LEONARDO LUZA
DATA : 20/06/2022
HORA: 14:00
LOCAL: https://conferenciaweb.rnp.br/webconf/wagner-27
TÍTULO:

CATALYTIC CONVERSION OF GLUCOSE AND FRUCTOSE TO 5-HYDROXYMETHYLFURFURAL

PÁGINAS: 21
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Química
SUBÁREA: Físico-Química
ESPECIALIDADE: Cinética Química e Catálise
RESUMO:

Biomass allows the production of carbon-neutral compounds, since it is constituted by the carbon assimilated by plants during photosynthesis carried out throughout their life. Thus, making effective use of this cheap and abundant source is essential for achieving a better balance between consumption and the environment. This biomass has in its composition several sugars, among them we have glucose and fructose that can, through catalyzed reactions, be converted into molecules of greater added value, molecules known as platform chemicals. This name comes from the great potential of application, through its conversions, in the most diverse products. Among the platform chemicals, the 5-hydroxymethyl furfural (5-HMF) molecule stands out due to its application in the production of fuels and fuel additives, which allows for a green production chain. In the present work, the verification of catalysts produced from Eucalyptus Kraft Lignin, a residue obtained from the pulp and paper industry, was carried out through in situ hydrothermal carbonization, where carbonization occurs in the presence of the functionalizing agent. Then, the catalyst was subjected to impregnation with different concentrations of 3, 9 and 20% tin (IV) chloride and were tested in the glucose and fructose conversion reactions, in order to obtain 5-HMF. The best result for the conversion of glucose was obtained by the catalyst impregnated with 9% in reaction, having been able to convert 72.86% of the glucose with a yield of 27.13% of 5-HMF, 16.75% of fructose, 3 .70 of formic acid, 2.63% of levulinic acid, forming 22.64% of humins. For fructose, the best result was obtained for carbon without impregnation, having been able to convert 54.84% of fructose, with 33.29% of production of 5-HMF and 22% of humins.

MEMBROS DA BANCA:
Presidente - Interno ao Programa - 1601156 - WAGNER ALVES CARVALHO
Membro Titular - Examinador(a) Interno ao Programa - 233.691.308-90 - YVAN JESUS OLORTIGA ASENCIOS - UNIFESP
Membro Titular - Examinador(a) Externo à Instituição - ANTÔNIO CARLOS FERREIRA BATISTA
Membro Suplente - Examinador(a) Interno ao Programa - 1762430 - DALMO MANDELLI