Synthesis and characterization of CuCl2/SiO2 catalyst for the oxychlorination of methane

• Autor(a) principal: Nascimento, José Carlos
• Data de Publicação: 2011
• Outros Autores: Sousa, João Fernandes de, Rojas, Leopoldo Osvaldo Alcazar, Fontes, Francisco de Assis Oliveira
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRN
• Texto Completo: https://repositorio.ufrn.br/handle/123456789/39567
• topic: Oxychlorination; Fixed-bed reactor; Synthesis and characterization; Copper; Methane

CuCl2 catalysts supported on silica were used in the oxychlorination of methane. The materials were synthesized by the ion-exchange technique in a basic solution, using a copper-ammonia complex with 3 and 6 % of nominal copper load. The materials where characterized by Thermogravimetry (TG), X-ray Fluorescence Spectroscopy (XRF), Temperature Programmed Reduction (TPR), Scanning Electron Microscopy with X-ray microanalysis (SEM/EDS), BET specific area, and Pore Distribution. The characterization confirmed the presence of copper on the support surface, concluding that the ion-exchange technique was adequate for the catalyst synthesis. During reaction assays, an oxychlorination bench-scale unit was employed. The tests were carried out at 673 and 773 K. The results demonstrated the influence of temperature and catalyst copper content on methane conversion