1. Universidade Federal do Rio Grande do Norte
2. Instituto de Química
3. IQ - Artigos publicados em periódicos

Título:	Use of rice husk ash as only source of silica in the formation of mesoporous materials
Autor(es):	Schwanke, A. J. Melo, D. M. A. Silva, A. O. Pergher, Sibele Berenice Castellã
Palavras-chave:	MCM-41;Rice husk ash;Mesoporous materials
Data do documento:	2013
Editor:	Associação Brasileira de Cerâmica
Referência:	SCHWANKE, A. J.; MELO, D. M. A.; SILVA, A. O.; PERGHER, S. B. C. Use of rice husk ash as only source of silica in the formation of mesoporous materials. Cerâmica, [s.l.], v. 59, n. 349, p. 181-185, 2013. ISSN 0366-6913. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132013000100022&lng=en&tlng=en. Acesso em: 19 maio 2020. http://dx.doi.org/10.1590/S0366-69132013000100022
Resumo:	This paper reports the synthesis of molecular sieves similar to MCM-41 using rice husk ash as only source of silica. For comparison purposes, a standard synthesis was performed using aerosil 200 commercial silica. The rice husk silica was obtained by heating treatment at 600 ºC and leaching for 2 h in reflux with HCl 1mol.L-1 and used in the synthesis. The samples prepared were characterized by N2 adsorption, X-ray diffraction (XRD), scanning electronic microscopy (SEM) and thermogravimetric analysis (TG). By type-IV adsorption isotherms, the formation of mesoporous materials was observed. XRD showed the formation of hexagonal unidirectional pore materials similar to MCM-41. By SEM, it could be observed that the rice husk has fibrous aspect and that synthesis using calcined and leached rice husk did not react entirely because silica was only partially dissolved
URI:	https://repositorio.ufrn.br/jspui/handle/123456789/29602
ISSN:	0366-6913
Aparece nas coleções:	IQ - Artigos publicados em periódicos

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