Ion exchange with alkaline earth in zeolites: effects of exchanging time on acid and basic characteristics

Authors

  • Classius Ferreira da Silva UNIOESTE
  • Carla Kazumi Carrascoza Yoshida UEM
  • Nádia Regina Camargo Fernandes Machado UEM
  • Francisco Maugeri Filho UNICAMP

DOI:

https://doi.org/10.4025/actascitechnol.v21i0.3170

Keywords:

troca iônica, zeólitas, desidrogenação, desidratação

Abstract

The isopropanol decomposition is used as a model reaction for determining the acid or basic characteristics of zeolites, specially zeolites of the type Y due to the facility of decomposition in both sites. The acid sites produce water and propene, while the basic sites produce acetone and hydrogen. Zeolites exchanged with alkaline earth may carry out both sites due to their bivalent charges. In this research paper two types of zeolites (A and Y) underwent ion exchange according to an experimental design with the following parameters: cation introduction (Ca+2 or Ba+2) and exchanging time (5 minutes or 24 hours). The zeolites obtained were characterized by X-ray fluorescence, superficial area, and acidity/basicidity by the model reaction of isopropanol decomposition. It was verified that ion exchange modified acidity/basicidity in zeolites.

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Author Biography

Classius Ferreira da Silva, UNIOESTE

Engenheiro Quí­mico formado pela UEM em 1995, Mestre em Engenharia de Alimentos pela Faculdade de Engenharia de Alimentos da UNICAMP, Doutor em Engenharia Quí­mica (Írea de Desenvolvimento de Processos Biotecnológicos) pela Faculdade de Engenharia Quí­mica da UNICAMP. Atua como professor adjunto da Universidade Estadual do Oeste do Paraná - Campus de Toledo desde 1999. Desenvolve projetos na área de Biopolí­meros e suas aplicações na área de Alimentos, Meio Ambiente e Fármacos Currí­culo Lattes

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Published

2008-05-14

How to Cite

da Silva, C. F., Yoshida, C. K. C., Machado, N. R. C. F., & Maugeri Filho, F. (2008). Ion exchange with alkaline earth in zeolites: effects of exchanging time on acid and basic characteristics. Acta Scientiarum. Technology, 21, 769–772. https://doi.org/10.4025/actascitechnol.v21i0.3170

Issue

Vol. 21 (1999)

Section

Chemical Engineering

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