|
|||||
|
|
The Deactivation Modes of Cu/ZnO/Al2O3 and HZSM-5 Physical Mixture in the One-Step DME Synthesis |
|
| Authors: | Flávia S R Barbosa Vanusa S O Ruiz José L F Monteiro Roberto R de Avillez Luiz E P Borges Lucia G Appel |
| Affiliation: | 1. Instituto Militar de Engenharia, Pra?a General Tibúrcio, 80 Praia Vermelha, Rio de Janeiro, 22290-270, Brazil 2. Instituto Nacional de Tecnologia/MCT, Av. Venezuela 82/507, Rio de Janeiro, 22081-312, Brazil 3. NUCAT/COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fund?o, C.P. 68502, Rio de Janeiro, 21941, Brazil 4. Pontif?ícia Universidade Católica, Rua Marquês de S?o Vicente 255, Gávea, Rio de Janeiro, 22453-900, Brazil |
| Abstract: | The CO2 production by shift reaction and the deactivation process are the drawbacks of the One-Step DME Synthesis. Therefore, this contribution discusses possible deactivation modes taking into account the catalytic performance and the characterization of spent catalysts using XRD, TG and FTIR techniques. For this purpose a physical mixture that contains a commercial methanol catalyst and ZSM-5 was employed. It can be suggested that one of the main modes of catalyst deactivation is the hydrocarbon formation by MTG reactions. Changes in the interaction between Cu0 and ZnO should also be considered. The results show that both of them are affected by H2/CO ratio. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |