EDS表面分析研究Pd_C催化剂的失活原因.pdf

·1　4 　·　　　　　　　　　　　　　　　　　　　　　　　　　　　　　1999 EDS Pd/C 张伟红　韩淑梅　　　　王海涛　苏继新 (,,250100)(,,250100) 　　X 。, 、、, 。EDS 。 　　　　 Study on the Deactivation of Pd/C Catalyst by EDS Zhang Weihong 　Han Shumei (Jinnan Chemical Fibre Corporation,Jian,250 100) Wang Haitao　SuJixin (Department of Environmental Engineering,Shandong Universit ,Jinan,250 100) Abstract 　Deactivated Pd/C catal st of h drogenation for purification terephthalic acid w ere studied b EDS (energ dispersive spectroscop ).The results show n that sulfur containing compounds,the catal st of C H Br in the process of oxidation,impurit ions from the corrosion of 2 2 4 the reactor and pipes or deionized water, were deposited on the surface of the catal st.The deposited impurit might lower the h drogenation activit of the Pd/C catal st.The method that the impurit deposited on the external and internal la er of the catal st has been detected b EDS is an efficient method to stud the deactivation of the Pd/C catal st. Keywords 　Pd/C catal st,deactivation,h drogenation,purified terephthalic acid 　　Pd/C 。 , , [ 1] 280 ℃ , [2] , , , , ,。 , , 。 , X ,, (SEM …EDS ) ,。 ,, , , 。 , 1　 , 1.1　 ,