| 초록 |
The low temperature water–gas shift (LT–WGSR) reaction has been carried out at gas hourly space velocity (GHSV) of 36,000 mL/g∙h over Cu–CeO2 catalysts prepared by citric acid assisted sol–gel process. To identify the effect of promoters on physico–chemical properties and catalytic performance of Cu–CeO2 catalyst, representative additives having the effect of improving oxygen storage capacity (Zr, Ti) and Cu dispersion (Mn, Ga) were applied, respectively. The effect of promoters on the physico–chemical properties related with catalytic performance of Cu–CeO2 catalysts were interpreted through various characterization techniques such as N2 physisorption, TPR, XRD, N2O–titration, and Raman spectroscopy. The characterization results for the catalysts were correlated with catalytic activity results in the LT–WGSR. |
