Pozzolanic activity of a spent fluid catalytic cracking catalyst residue
The reaction between a spent fluid cracking catalyst (FC3R) residue and portlandite was monitored over 56 days using several material characterisation techniques. The results showed that the residue was heterogeneous and composed of reactive and non-reactive fractions and that both fractions contain...
| Autores: | , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2011 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/27756 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/27756 |
| Access Level: | acceso abierto |
| Palavra-chave: | C-S-H gel Catalyst residues Low crystallinity Material characterisation Nuclear magnetic resonance techniques Portlandite Pozzolanic activity Pozzolanic reaction Spent fluid catalytic cracking catalysts Spent fluids Calcium silicate Catalysts Chemical plants Cracking (chemical) Hydrates Resonance Stoichiometry Thermogravimetric analysis X ray diffraction Fluid catalytic cracking INGENIERIA DE LA CONSTRUCCION |
| Resumo: | The reaction between a spent fluid cracking catalyst (FC3R) residue and portlandite was monitored over 56 days using several material characterisation techniques. The results showed that the residue was heterogeneous and composed of reactive and non-reactive fractions and that both fractions contained silicon and aluminium. After 56 days, the development of C-S-H gel was evident; part of the catalyst residue was pozzolanic. The CH combination could be monitored by thermogravimetry or X-ray diffraction, by measuring the signal corresponding to CH. However, due to the low crystallinity of cementing products and their complex stoichiometry, the above-mentioned techniques were less able to characterise C-A-S-H. However, nuclear magnetic resonance techniques allowed the evolution of the pozzolanic reaction to be evaluated and the hydrate products to be characterised. Thomas Telford Ltd & 2011. |
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