Evaluation of pore structural stability of mesoporous titanium silicates

• Autor(es): Galacho, Cristina ; Carrott, Manuela ; Carrott, Peter
• Data: 2008
• Identificador Persistente: http://hdl.handle.net/10174/6258
• Origem: Repositório Científico da Universidade de Évora
• Assunto(s): Ti-MCM-41; hydrothermal stability; Ti-SBA-15
• Tipo de Documento: Artigo
• Idioma: Inglês
• Editor(es): Kaskel, S; Llewellyn, P; Rodríguez-Reinoso, F; Seaton, N.A.

Descrição

Therefore one of the purposes of the work presented here is to complement the stability features by studying the hydrothermal resistance of the Ti-MCM-41 materials prepared by the same procedure. A similar study of Ti-SBA-15 materials, synthesised by conventional procedures, will also be presented and the results compared with those of Ti-MCM-41 materials. The metal content was the main parameter considered. The pore structural alterations were evaluated by characterising by X-ray diffraction and nitrogen adsorption at 77K before and after the materials were submitted to increasing temperature, increasing unidirectional pressure or after 12h in boiling water under static conditions.