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Title in Portuguese: Temperature Influence in the Deactivation of LTA Commercial Zeolites
Title: Temperature Influence in the Deactivation of LTA Commercial Zeolites
Author: Nascimento, Beatriz Oliveira
Santos, Bianca Ferreira dos
Maia, Débora Aline Soares
Melo, Darley Carrijo de
Vilarrasa-García, Enrique
Bastos Neto, Moisés
Azevedo, Diana Cristina Silva de
Keywords: Deactivation
LTA Zeolite
TSA Process
Issue Date: 2021
Publisher: Imprensa Universitária da Universidade Federal do Ceará (UFC) -
Citation: NASCIMENTO, Beatriz Oliveira; SANTOS, Bianca Ferreira dos; MAIA, Debora Aline Soares; MELO, Darley Carrijo de; VILARRASA-GARCÍA, Enrique; BASTOS NETO, Moisés; AZEVEDO, Diana Cristina Silva de. Temperature influence in the deactivation of LTA commercial zeolites. In: BRAZILIAN MEETING ON ADSORPTION, 13th ., November 25- December 3, 2020, Online, Fortaleza, Ceará. AZEVEDO, Diana Cristina Silva de; BASTOS NETO, Moisés (Orgs.). Anais do 13th Brazillian Meeting on Adsorption: conference e-book. Edição Digital. Fortaleza: Imprensa Universitária, 2021. p.670-675. DOI:
Abstract: In an industrial process it is common the utilization of adsorption fixed bed with zeolitic material for gas drying and the adsorbent regeneration may be conducted using a TSA process, which in its turn, can cause the loss of activity, like an aging process. So, the goal of this study is promoting the premature aging of a commercial zeolite, LTA type, by cycles of heating and cooling at two different temperatures, 523 and 573 K. It was made the crystallinity study, textural characterization, FTIR spectroscopy, TGA and carbon dioxide isotherms at 298 K as the probe molecule, to evaluate the adsorption capacity. The crystallinity study does not show any changes in the crystal structure of the zeolite. So, the reduction in the adsorption capacity could be associated to an organic compound deposit in the porous of the material, which might cause the block effect. The temperature study presents a slight variation in the results, but this is not the only factor in the aging process. The number or the duration of the cycles might be key variables in the optimization of this study.
metadata.dc.type: Artigo de Evento
ISBN: 978-65-88492-52-9
Appears in Collections:DEQ - Trabalhos apresentados em eventos

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