Effect of Zn addition on the water–gas shift reaction over supported pallad…

Abstract. The effect of Zn addition on the Pd turnover rate (TOR) for the water–gas shift (WGS) reaction was studied on 2 wt% Pd on alumina with Zn content varying from 0 to 19% Zn by weight. Over 85% of the Zn reacted with alumina to form zinc aluminate with a fraction reacting with Pd. The average Pd– Zn coordination number as measured by extended X-ray absorption fine structure (EXAF…