| 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 | en |
| ISSN | 1011-372X |
| 期刊性質 | 國外 |
| 收錄於 | |
| 產學合作 | |
| 通訊作者 | Huang, W.F. |
| 審稿制度 | 否 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/72757 ) |
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