K-Promoted Hydrotalcites for CO2 Capture in Sorption Enhanced Reactions

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Wu, YJ (Autor) Outra; Li, P (Autor) Outra; Yu, JG (Autor) Outra; Cunha, AF (Autor) Outra; Alírio Rodrigues (Autor) FEUP

Revista

Título: Chemical Engineering and Technology

Vol. 36

Páginas: 567-574

ISSN: 0930-7516

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 26 Citações

Scopus - 17 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

ID Authenticus: P-005-26J

DOI: 10.1002/ceat.201200694

Abstract (EN): Potassium-promoted hydrotalcite-like material was prepared with potassium nitrate as the K precursor. The highest ever reported CO2 adsorption capacity (1.13molkg1) was obtained at 656K with pCO2=0.5bar at humid conditions. A mathematical model was developed and it satisfactorily simulated the adsorption and desorption processes. The stability of the material was tested with repeated adsorption/desorption cycles; the CO2 adsorption capacity decreased around 7% after ten cycles. In addition, regeneration was performed with temperature swing operation (from 656K to 708K), where a complete regeneration was achieved within 60min, which reduced to half the time required for regeneration under isothermal conditions.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8