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回流吸附法制备的负载型12-钨磷酸(HPW/C)是合成乙酸乙酯的高效催化剂。最佳反应条件下乙醇转化率达96％,酯化选择性100％。催化剂的高活性是由于HPW在活性炭上高度分散,使活性位增多,有效酸量增大。HPW/C还具有热稳定性高和不易流失等优点。
The supported 12-tungstophosphoric acid (HPW / C) prepared by reflux adsorption is an efficient catalyst for the synthesis of ethyl acetate. Under the best reaction conditions, the conversion of ethanol reached 96% and the selectivity of esterification was 100%. The high activity of the catalyst is due to HPW highly dispersed on the activated carbon, the active site increased, the effective amount of acid increased. HPW / C also has the advantages of high thermal stability and easy to drain.