Catalytic activity of Mn/AC catalyst on direct synthesis of 1,1-dibutoxybutane from 1-butanol

A study on catalytic activity of Mn/AC catalyst for direct synthesis of 1,1-dibutoxybutane (DBB) from 1-butanol was carried out. The Mn/AC catalyst was prepared by dry impregnation method and characterized by TG/DTG and XRD. The catalyst was placed in a continuous down flow quartz tube reactor, and 1-butanol was pumped into a preheated reactor in N2 atmosphere at a certain temperature, contact time, and 1-butanol concentration. The product was condensed and analyzed by GC-MS and GC. The results showed that Mn/AC catalyst had a good catalytic activity on direct synthesis of DBB from 1-butanol. The 1-butanol conversion and DBB selectivity increase as temperature increased and they reached a maximum at a certain temperature. The conversion of 1-butanol increases as contact time increased. At low temperature, the DBB selectivity decreases as contact time increased. However, it increases at higher temperature. The high conversion of 1-butanol could be obtained at a certain 1-butanol concentration, and tended to decrease at lower or higher 1-butanol concentration.