Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Gustavo Paim Valença"'
Autor:
Nathália La-Salvia, Juan José Lovón-Quintana, Adriana Siviero Pagani Lovón, Gustavo Paim Valença
Publikováno v:
Materials Research, Vol 20, Iss 6, Pp 1461-1469 (2017)
Purely siliceous MCM-41 and Al-containing MCM-41 (Al-MCM-41) mesoporous materials were synthesized by non-hydrothermal method in alkali-free ions medium at room temperature and short reaction times. Under these synthesis conditions, it was also inves
Externí odkaz:
https://doaj.org/article/1dece52ab9ad4f1b8bb6463487ffef46
Publikováno v:
Avances en Ciencias e Ingeniería, Vol 1, Iss 1, Pp 35-43 (2010)
Este trabajo estudia la esterificación de ácido acrílico con 1-butanol usando como catalizador Al-MCM-41 con diferentes grados de acidez a diferentes temperaturas. La síntesis del Al-MCM-41 fue realizada a partir de bromato de cetil-trimetil amon
Externí odkaz:
https://doaj.org/article/bc75a83c088544528f18ea47a691188b
Novos produtos e energia a partir de biomassa, uma matéria prima abundante e renovável para o Brasil
Publikováno v:
Revista Agrogeoambiental, Vol 1, Iss 1 (2009)
A biomassa consiste de qualquer fonte de carbono renovável advinda de fotossíntese que pode ser aproveitada de forma a obter combustíveis e novos produtos. Ao contrário dos outros recursos comumente classificados como combustíveis fósseis, em e
Externí odkaz:
https://doaj.org/article/5e0973b257db475f99bd1d9596788be4
Publikováno v:
Journal of Applied Research and Technology. 20:24-36
Molecular sieves of MCM-41 impregnated with MgO, MoO3, and Mo2C synthesized using a wet impregnation method. The compounds developed herein, were characterized by means of XRD, SEM-EDS and FT-IR techniques. The production capacity of acetaldehyde fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c86f80041a6b7eb28522093655037c93
https://doi.org/10.22201/icat.24486736e.2022.20.1.1482
https://doi.org/10.22201/icat.24486736e.2022.20.1.1482
Autor:
Sergio Andres Villalba Morales, Natália Maira Braga Oliveira, William Lima dos Anjos, Gustavo Paim Valença
Publikováno v:
Journal of Sol-Gel Science and Technology. 100:466-476
This work describes how the silica/alumina ratio (SAR) affects the framework, texture, chemical composition, and acidity of SAPO-34 molecular sieves synthesized via hydrothermal crystallization using morpholine (MOR) or triethylamine (TEA) as structu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb91b6d2979b97c1ddb9b9cd554001b0
https://doi.org/10.1007/s10971-021-05669-w
https://doi.org/10.1007/s10971-021-05669-w
Publikováno v:
Brazilian Journal of Chemical Engineering. 38:77-87
Diethyl carbonate (DEC) is a versatile chemical with several commercial uses. The synthesis of DEC from carbon dioxide and ethanol is both environmentally friendly and can be integrated into the ethanol biorefinery. A thermodynamic evaluation was mad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21aed55f0270977bf2f901109411ffd0
https://doi.org/10.1007/s43153-020-00073-3
https://doi.org/10.1007/s43153-020-00073-3
Autor:
Paulo J. S. Moran, Ynae Padilha David, Gabriela Chaves da Silveira, Lucidio Cristovão Fardelone, Gustavo Paim Valença, Taciani dos Santos Bella de Jesus
Publikováno v:
Environment and Innovation Strategies to Promote Growth and Sustainability ISBN: 9781003136712
Environment and Innovation Strategies to Promote Growth and Sustainability
Environment and Innovation Strategies to Promote Growth and Sustainability
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bae8c1cf58e30d8e5a8a5737ee16b94b
https://doi.org/10.1201/9781003136712-2
https://doi.org/10.1201/9781003136712-2
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The presence of both acidic and basic adsorption sites on the surface of hydroxyapatite [${\mathrm{Ca}}_{10}{({\mathrm{PO}}_{4})}_{6}{(\mathrm{OH})}_{2}$; HAP] is an interesting property for catalytic applications. Here, we report a density functiona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f346d6b074c57e56bda72cb96e488137
Autor:
Richard Landers, Gustavo Paim Valença, Juarez L. F. Da Silva, Albert F. B. Bittencourt, Lucas G. Verga, Kathlen C.E.S. Yokoo, Karla F. Andriani, Henrique Brasil, Paulo C. D. Mendes
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Several studies have investigated the acidic/basic sites of the hydroxyapatite (HAP) surface. However, their specific role in the catalytic properties of HAP is still discussed. Here, we investigated different preparation methods (ultrasound, microwa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2907ccc232505469463fbe85bc620dbf
Autor:
G. C. Silveira, Gustavo Paim Valença, Ynae Padilha David, Paulo J. S. Moran, Lucidio Cristovão Fardelone, T. S. Bella de Jesus
Publikováno v:
Proceedings of the 6th Brazilian Technology Symposium (BTSym’20) ISBN: 9783030756796
The global organic acid market is expected to reach USD 36.86 Billion in 2026. This study aimed to produce citric, itaconic, and gluconic acids by using a biotechnological process in a lightly stirred bioreactor with fungus from the genus Aspergillus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f87a0498de97f4b5c4e25aec82d28137
https://doi.org/10.1007/978-3-030-75680-2_71
https://doi.org/10.1007/978-3-030-75680-2_71