On the mixed oxides-supported niobium catalyst towards benzylamine oxidation

Autor: Javier Adrio, Gustavo S.G. de Carvalho, Alexandre A. Leitão, Álisson Silva Granato, Carla G. Fonseca, Giovanni W. Amarante

Publikováno v: Catalysis Today. 381:118-125

A series of mixed oxides-supported niobium-based catalysts has been synthesized and applied towards oxidation reactions of benzylamine derivatives. Under the optimized reaction conditions, the selectivity to oxime enhanced, leading to the main produc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fda6780f0c39daadcf855b929ba72ea9
https://doi.org/10.1016/j.cattod.2020.08.011

Microwave-assisted multicomponent synthesis of julolidines using silica-supported calix[4]arene as heterogeneous catalyst

Autor: Giovanni W. Amarante, Ricardo Natalino, Felipe T. Martins, Gustavo Pablo Romanelli, Márcio José da Silva, Valeria Palermo, Ingredy Bastos Braga, Angel Gabriel Sathicq, Sandra Milena Bonilla Castañeda, Gustavo S.G. de Carvalho, Walysson Ferreira de Paiva, Sergio Antonio Fernandes, João Vitor de Assis

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

The application of immobilizing calixarene onto the surface of silica using a sol-gel method, as an efficient heterogeneous catalyst (CX4SO3HSi(n)) for multicomponent Povarov reaction has been described. Catalytic activity of the CX4SO3HSi(n) for the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbac5c5d98a99343cdf3b404439a6e6a
https://doi.org/10.1016/j.tet.2019.05.049

Lippia origanoides Kunth. essential oil loaded in nanogel based on the chitosan and ρ-coumaric acid: Encapsulation efficiency and antioxidant activity

Autor: Valdir Mano, Stephanne Yonara Barbosa de Carvalho, Luiz Gustavo de Lima Guimarães, Gustavo S.G. de Carvalho, Regiamara Ribeiro Almeida, Elisa Tatiana Silva Damasceno, Arnaldo César Pereira

Publikováno v: Industrial Crops and Products. 125:85-94

The encapsulation of essential oils using natural polymers has been shown as a promising alternative, resulting in their active compounds protection and increased the dispersion in aqueous environment, thus enhancing their functional ability. Thus, i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c6778c4c6d86907913c14f78c2e5842a
https://doi.org/10.1016/j.indcrop.2018.08.074

Nb

Autor: Giovanni W. Amarante, Gustavo S.G. de Carvalho, Maria Patrícia do Nascimento, Marcelo Magno de Siqueira, Marcone Augusto Leal de Oliveira

Publikováno v: Heliyon, Vol 6, Iss 6, Pp e04128-(2020)
Heliyon

Heterogeneous photocatalysis has become a significant green technology for water treatment. The application of Nb2O5 catalyst for the photodegradation of contaminants has merged as an important tool to this process. Furthermore, it is known that cata

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::450d9cbb62f6e66fa41354c5101955f6
https://pubmed.ncbi.nlm.nih.gov/32529083

Experimental design for metal extraction from facial cosmetics samples and determination by square wave voltammetry

Autor: Lucas Vinícius de Faria, Maria Auxiliadora Costa Matos, Rafael Arromba de Sousa, Thalles Pedrosa Lisboa, Gustavo S.G. de Carvalho, Renato Camargo Matos

Publikováno v: Analytical Methods. 10:5327-5334

An alternative microwave-assisted sample preparation procedure is proposed for the rapid, reliable and easy extraction of metals from facial cosmetics samples (lipstick, compact powder and eyeshadow). The mass of the sample and the nitric acid and hy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3fe3dcd831ff2687ed45b7bed0ff8ad3
https://doi.org/10.1039/c8ay01696h