Síntese da zeólita ZSM-12 com utilização de duas fontes de sílica

• Ano de defesa: 2012
• Autor(a) principal: Costa, Tiago Pereira Martins da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Alagoas; Brasil; Programa de Pós-Graduação em Engenharia Química; UFAL
• Palavras-chave em Português: Engenharia Química; ZSM-12; Método hidrotérmico; Metassilicato; Hydrothermal method; Metasilicate; CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA
• Link de acesso: http://www.repositorio.ufal.br/handle/riufal/1211

The ZSM-12 zeolite is high silica material, with a one-dimensional pore structure that makes it presents a high performance as a catalyst in the hydroisomerization of hydrocarbons. For the synthesis of ZSM-12 in most cases, reagents are required that results in the process, for example, the use of organic agents drivers structure and / or a reactant to some sources have different values, the most interesting use which has the lowest value to make the synthesis more feasible in industrial scale. In this work we developed a synthesis route of zeolite ZSM-12 using a silica source more viable than the silica gel, sodium metassilicate. Samples were synthesized by the hydrothermal method at a temperature of 160 ° C using the following reagents: silica gel, sodium metassilicate, sodium hydroxide, pseudobohemita, tetraethylammonium hydroxide, sulfuric acid. After synthesis the samples were characterized by X-ray diffraction (XRD), absorption spectroscopy in the infrared (FT-IR), thermal analysis (TG / DTA), determination of surface area (BET) and scanning electron microscopy (MEV)