CINZAS DE CASCA DE ARROZ COMO FONTE ALTERNATIVA DE SILÍCIO PARA A SÍNTESE DE ZEÓLITA BETA

• Autor(a) principal: Enzweiler, Heveline
• Data de Publicação: 2014
• Outros Autores: Coutinho, Elisa Barbosa, Schwaab, Marcio
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Eletrônica em Gestão Educação e Tecnologia Ambiental (REGET)
• Texto Completo: https://periodicos.ufsm.br/reget/article/view/10478
• topic: Beta zeolite; catalyst; rice husk ash; isopropanol; propylene.; Zeólita Beta; Catalisador; Cinzas de Casca de Arroz; Isopropanol; Propeno.

Rice husk ash is an agroindustrial residue generated in large scale that can cause environmental problems and risks to people health. As a solution to this problem, this ash could be used as an alternative source of high reactive silica, with a wide field of applications, such as, for example, in the synthesis of catalysts with high silicon content. In this work, beta zeolite was synthesized using amorphous silica, extracted from rice husk ash, and pseudo-boehmite. Using this alternative source of silicon, it was possible to form the zeolitic structure with excellent catalytic properties. The application of the beta zeolite in the dehydration of isopropanol enables the production of propylene with high selectivity at low temperatures, showing that the use of silica from rice husk ash has a great technological and environmental potential.