A Mn promoter was introduced into a CuâCrâZrcompositeoxide catalyst for the direct synthesis of ethyl acetate from ethanoldehydrogenation by means of coprecipitation method. The effects ofthe Mn promoter on the structure and catalytic performance of thecatalyst were investigated with characterization techniques includingXRD, TPR, XPS, and N2O TPD. An interaction between theMn promoter and the CuO in the catalyst was found to exist, and itimproved the dispersion of the Cu component on the catalyst surfaceand decreased the size of CuO crystal particles, thereby increasingthe thermal stability of the catalyst. The results of long-durationactivity tests indicated that the Mn-promoted CCZ (CuâCrâZr)catalyst maintained its activity and showed good stability. [ABSTRACT FROM AUTHOR]