Puede utilizar el filtro de búsqueda del panel izquierdo para acotar los resultados
Filtro
Tipo de publicación
Todos Libros Revistas
Título
Autor
Palabras clave
ISBN
Acceso DOI
Acceso digital CSIC
Buscar
Datos técnicos
RevistaCatalysis Today
Año2012
Volumen179 (1)
Páginas27-34
Internacional

Use of different templates on SAPO-34 synthesis: Effect on the acidity and catalytic activity in the MTO reaction

Autores:Teresa Álvaro Muñoz, Carlos Márquez Álvarez, Enrique Sastre
Grupos de investigación:Tamices Moleculares

SAPO-34 molecular sieves have been synthesized with different structure directing agents. Although materials with the same framework structure (CHA type) are obtained in all cases, they possess different physicochemical properties, especially textural parameters and crystal size. These catalysts have been tested in the MTO process. All the samples exhibited high activity and selectivity to short chain olefins at the initial stages of the reaction, but they deactivate rapidly with time on stream, especially at high space velocity. It has been observed an important influence of the external surface, crystal size and acidity on the activity, selectivity and lifetime of the different samples. Thus, the sample synthesized with tetraethylammonium hydroxide as structure directing agent rendered the best catalytic performance owing to its higher external surface, smaller crystal size and higher acidity.

Palabras clave:SAPO-34, Structure directing agents, Methanol-to-olefins
logo de CSIC