Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Juan Carlo Villalba"'
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 35, Iss 1, Pp 9-14 (2014)
In this work was investigated the thermal behavior of iron salts (chloride and ferric nitrate) using the technique of simultaneous thermal analysis (TG-DTA). Thermal decomposition of the salts involves complex mechanisms such as dehydration, hydrolys
Externí odkaz:
https://doaj.org/article/75197502db194cd1a4c17bfeccbdf0c5
Publikováno v:
Orbital: The Electronic Journal of Chemistry, Vol 5, Iss 4, Pp 249-256 (2014)
As argilas utilizadas nesse trabalho foram caracterizadas utilizando-se as técnicas de: difratometria de raios X (DRX) com fonte de luz síncrotron, microscopia eletrônica de varredura (MEV), microanálise por energia dispersiva de elétrons (EDS),
Externí odkaz:
https://doaj.org/article/8f81817193fc422d9bb2d1a426533a05
Autor:
Fauze Jacó Anaissi, Juan Carlo Villalba, Sérgio Toshio Fujiwara, Luiz Fernando Cótica, Cláudio Roberto Lima de Souza, Patrício Zamora-Peralta
Publikováno v:
Química Nova, Vol 32, Iss 8, Pp 2006-2010 (2009)
A new mixed material was obtained through the combination of the suspensions of iron oxy-hydroxide and bentonite clay, denoted BFe. Analysis of its structure (XRD, Mossbauer and TGA) and composition (AAS) suggests the maintenance of the layer structu
Externí odkaz:
https://doaj.org/article/a2e2e8cc950246edbcf8d95d43f41e9e
Autor:
Juan Carlo Villalba, Itamar Antonio Rodrigues, Fábio Luiz Melquiades, Maria Josefa Santos, Fauze Jacó Anaissi
Publikováno v:
Clay Minerals. 55:12-23
Sodium smectite clays were enriched with ferric ions (Argel-Fe and Volclay-Fe) to convert the surface charge of the clays from negative to positive and to use the clays in the discolouration of a synthetic effluent composed of seven anionic dyes (mix
Autor:
Fauze Jacó Anaissi, Cássio Marques Resmim, Mirian M. Caetano, Juan Carlo Villalba, Mariane Dalpasquale, Marcelo M. Tusi, Nilce I. C. Vielmo, Filipe Quadros Mariani
Publikováno v:
Progress in Biomaterials
Progress in Biomaterials, Vol 8, Iss 1, Pp 1-9 (2018)
Progress in Biomaterials, Vol 8, Iss 1, Pp 1-9 (2018)
Hydroxyapatite was obtained by bone calcinations. To study the calcination process, bovine and porcine bones were first autoclaved to remove fat and other non-bone tissues. They were then heated in an alumina pan in an oxidizing atmosphere of air, wh
Autor:
Fauze Jacó Anaissi, Ricardo Cancian, Juan Carlo Villalba, Marcelo Marques Tusi, Almir Oliveira Neto, Estevam V. Spinacé, Nataly Soares de Oliveira Polanco
Publikováno v:
Matéria (Rio de Janeiro) v.25 n.4 2020
Matéria (Rio de Janeiro. Online)
instacron:RLAM
Matéria (Rio de Janeiro. Online)
instacron:RLAM
Neste trabalho, hibridos Ni/Carbono foram preparados em duas etapas (carbonizacao hidrotermica e tratamento termico a 900 °C sob argonio) a partir de diferentes fontes de carbono: glicose, amido e celulose. Eletrocatalisadores PtRu/C foram preparado
Autor:
Almir Oliveira Neto, Nataly Soares de Oliveira Polanco, Marcelo M. Tusi, Ricardo Cancian, Estevam V. Spinace, Juan Carlo Villalba, Fauze Jacó Anaissi
Publikováno v:
Ciência e Natura. 42:e3
PtRu/Carbon hybrid materials with different metallic loadings (5, 10 and 20 wt%) were prepared by hydrothermal carbonization using cellulose as carbon source and reducing agent and H 2 PtCl 6 .6H 2 O and RuCl 3 .xH 2 O as metals sources and catalysts
Autor:
Fauze Jacó Anaissi, Milena Zvolinski Lemos, Marcelo Müller, Mariane Dalpasquale, Juan Carlo Villalba, Manuel Fernando Gonzalez Huila, Filipe Quadros Mariani
Publikováno v:
Dyes and Pigments. 120:271-278
Iron oxide hydroxides were synthesized through forced hydrolysis of iron (III) chloride hexahydrate and iron (III) nitrate nonahydrate that as a function of temperature yield different phases characterized by their colors. The tonalities were related
Autor:
Fauze Jacó Anaissi, Marcelo M. Tusi, Olandir Vercino Correa, Almir Oliveira Neto, Juan Carlo Villalba, Antônio Carlos da Silva, Nataly Soares de Oliveira Polanco, Michele Brandalise, Estevam V. Spinacé
Publikováno v:
Journal of Materials Science & Technology. 29:747-751
Ni/Carbon was prepared in two steps: initially cellulose as carbon source and NiCl2·6H2O as catalyst of the carbonization process were submitted to hydrothermal treatment at 200 °C and further to thermal treatment at 900 °C under argon atmosphere.
Autor:
Fauze Jacó Anaissi, Stephani Berezoski, Juan Carlo Villalba, Victor Galvani, Koema de Almeida Cavicchiolli
Publikováno v:
Materials Letters. 104:17-20
In this study, the synthesis and characterization of the akaganeite, phase β-FeO(OH), was performed. Scanning electronic microscopy images revealed that the crystals formed in the first 4 h of hydrolysis had the same morphology as those of crystals