dc.contributor | Pergher, Sibele Berenice Castella | |
dc.contributor | | |
dc.contributor | http://lattes.cnpq.br/5184076681745031 | |
dc.contributor | | |
dc.contributor | http://lattes.cnpq.br/5249001430287414 | |
dc.contributor | Araújo, Antônio Souza de | |
dc.contributor | | |
dc.contributor | http://lattes.cnpq.br/9770622597949866 | |
dc.contributor | Nascimento, Rubens Maribondo do | |
dc.contributor | | |
dc.contributor | http://lattes.cnpq.br/8671649752936793 | |
dc.contributor | Gusmão, Katia Bernardo | |
dc.contributor | | |
dc.contributor | http://lattes.cnpq.br/8664708384378316 | |
dc.creator | Schwanke, Anderson Joel | |
dc.date.accessioned | 2013-04-30 | |
dc.date.accessioned | 2014-12-17T14:07:04Z | |
dc.date.accessioned | 2022-10-05T23:12:41Z | |
dc.date.available | 2013-04-30 | |
dc.date.available | 2014-12-17T14:07:04Z | |
dc.date.available | 2022-10-05T23:12:41Z | |
dc.date.created | 2013-04-30 | |
dc.date.created | 2014-12-17T14:07:04Z | |
dc.date.issued | 2012-12-17 | |
dc.identifier | SCHWANKE, Anderson Joel. Porous mesostructures from natural materials. 2012. 90 f. Dissertação (Mestrado em Processamento de Materiais a partir do Pó; Polímeros e Compósitos; Processamento de Materiais a part) - Universidade Federal do Rio Grande do Norte, Natal, 2012. | |
dc.identifier | https://repositorio.ufrn.br/jspui/handle/123456789/12763 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3949378 | |
dc.description.abstract | The MCM-41 mesoporous synthesis was done using rice hulls ash and chrysotile as
natural alternative silica sources. For the using of these sources, chemical and thermic
treatments were done in both materials. After chemical and thermic treatments, these
materials were employed on the MCM-41 mesoctructures synthesis. The natural materials
treated and employed in the synthesis were characterized by several techniques such as X-ray
diffraction, N2 adsorption and desorption, scanning electronic microscopy and
thermogravimetric analysis. MCM-41 standart samples synthetized with aerosil 200
commercial sílica were used to evaluation. The formed material from rice hulls ash showed
values from BET specific area about 468 m².g-1, N2 adsorption and desorption isotherms and
loss mass similar to reference materials. The silica from chrysotile calcined and leached was
employed to mesoporous materials synthesis. The BET specific area showed values about 700
m².g-1, N2 adsorption and desorption isotherms type IV and loss mass similar to mesoporous
materials. The formed material from calcined and leached chrysotile, without calcination,
applied to phenol remotion carried high performance liquid chromatography and evaluated
with organophilic clays with different treatments. By the characterization techniques were
proved that mesoporous materials with lesser order that reference samples. The material
formed from rice hulls ash without the calcination step achieved better adsorption results than
organophilic clays | |
dc.publisher | Universidade Federal do Rio Grande do Norte | |
dc.publisher | BR | |
dc.publisher | UFRN | |
dc.publisher | Programa de Pós-Graduação em Ciência e Engenharia de Materiais | |
dc.publisher | Processamento de Materiais a partir do Pó; Polímeros e Compósitos; Processamento de Materiais a part | |
dc.rights | Acesso Aberto | |
dc.subject | MCM-41. Fontes alternativas. Materiais mesoporosos | |
dc.subject | MCM-41. Natural sources. Mesoporous materials | |
dc.title | Mesoestruturas porosas a partir de materiais naturais | |
dc.type | masterThesis | |