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Type: Artigo de evento
Title: The Synthesis Of Sapo-44 From Lamellar Alpo-kanemite
Author: Martins G.A.V.
Pastore H.O.
Abstract: This study shows that SAPO-44 molecular sieve may be prepared from AlPO-kanemite as source of phosphorus and aluminum simultaneously, without contamination with other phases. The results showed that the rate of the reaction was dependent on the duration of the ageing time and on dilution. X-rays diffractograms show that the minimum time of hydrothermal treatment necessary to completely transform AlPO-kanemite in SAPO-44 is 36 h. Monitoring of the reaction after different times of hydrothermal treatment shows that no complete dissolution of AlPO-kanemite occurs in the process of SAPO-44 production, thus a local, molecular level rearrangement involving the silica source is proposed for this reaction. © 2005 Elsevier B.V. All rights reserved.
Citation: Studies In Surface Science And Catalysis. , v. 158 A, n. , p. 335 - 342, 2005.
Rights: fechado
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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