CIMO - Artigos em Revistas Indexados à WoS/Scopus
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Browsing CIMO - Artigos em Revistas Indexados à WoS/Scopus by Subject "1,1-Dibutoxyethane"
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- Analysis of the synthesis of 1,1-dibutoxyethane in a simulated moving-bed adsorptive reactorPublication . Graça, Nuno S.; Pais, Luís S.; Silva, Viviana M.T.M.; Rodrigues, AlírioThe synthesis of 1,1-dibutoxyethane was carried out in a simulated moving-bed pilot unit LICOSEP 12-26 (Novasep, France) with 12 columns packed with the commercial ion-exchange resin Amberlyst 15(Rohm & Haas, France). Experimentally the best raffinate purity obtained was 85% with a productivity of 5.04 kg L−1 d−1 and a desorbent consumption of 13.5 L kg−1. The TMBR model was used to construct reaction/separation regions and to study the influence of feed composition, switching time, flow rates and mass-transfer resistances on the SMBR performance. The SMBR process shows a potential to be a competitive, efficient and environmentally friendly way to produce 1,1-dibutoxyethane and other acetals.
- Dynamic study of the synthesis of 1,1-dibutoxyethane in a fixed-bed adsorptive reactorPublication . Graça, Nuno S.; Pais, Luís S.; Silva, Viviana M.T.M.; Rodrigues, AlírioThe synthesis of 1,1-Dibutoxyethane in a fixed-bed adsorptive reactor using Amberlyst 15 was studied for the first time. The adsorption of non-reactive pairs was investigated experimentally, at 25 °C, by frontal chromatography in a fixed-bed adsorber. In order to avoid the immiscibility of the liquid phase, the liquid-liquid equilibrium for the mixture 1-butanol/water was studied. The multicomponent equilibrium adsorption data was assumed to follow the modified Langmuir type isotherm. Reaction experiments of 1,1-Dibutoxyethane production and column regeneration were performed in the fixed-bed adsorptive reactor. This work will enable further developments in chromatographic reactors aiming at the 1,1-Dibutoxyethane process intensification.