教師資料查詢 | 類別: 期刊論文 | 教師: 彭維鋒 Pong, Way-faung (瀏覽個人網頁)

標題:Effect of Ag-promotion on Pd catalysts by XANES
學年86
學期1
出版(發表)日期1998/01/01
作品名稱Effect of Ag-promotion on Pd catalysts by XANES
作品名稱(其他語言)
著者Huang, D.C.; Chang, K.H.; Pong, W.F.; Tseng, P.K.; Hung, K.J.; Huang, W.F.
單位淡江大學物理學系
出版者New York: Springer New York LLC
著錄名稱、卷期、頁數Catalysis Letters 53(3), pp.155-159
摘要Pd L 3 near-edge absorption measurements (XANES) were performed on four commercial acetylene hydrogenation catalyst samples with and without the Ag promoter. The Pd L 3 edge XANES spectra showed that the Ag-promoted catalysts have relatively weaker adsorption peaks and they follow the same order as the relative commercial performances of the four catalysts studied in terms of selectivity in ethylene purification, which indicates that there are incresese in the Pd d-band electron densities due to the addition of Ag. These results provide a reasonable explanation for the observed improvement in selectivity of the Ag-promoted acetylene hydrogenation catalysts. The Ag L 3 XANES spectr of the supported Pd-Ag catalysts indicate the absence of a white-line feature which seems to suggest that the charge transferred from Ag to Pd may not be the d-type.
關鍵字Ag promoter;catalysts;hydrogenation;XANES
語言英文
ISSN1011-372X
期刊性質國外
收錄於
產學合作
通訊作者Huang, W.F.
審稿制度
國別美國
公開徵稿
出版型式,電子版,紙本
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