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| 结果表明, 钾助剂与钴物种互溶性差，趋向于存在于催化剂的外表面，K助剂的添加显著降低了催化剂的表面积. K助剂在H2气氛下不会降低钴催化剂的还原能力，反而会促进Co3O4的还原.在CO+H2气氛中，钾助剂会促进金属钴的氧化，使催化剂活性降低.少量的K助剂使催化剂的催化活性有所下降，但使产物分布中的C1-C4含量降低，烯烷比增加. |
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gaohaiyan(金币+1, 翻译EPI+1):非常感谢！很好 2011-01-12 08:58:52
gaohaiyan(金币+49):谢谢！ 2011-01-12 08:59:16
gaohaiyan(金币+49):谢谢！ 2011-01-12 08:59:16
| The results show that potassium aid which tends to lie on the outside surface of the catalyzer has a poor intersolubility with cobalt species. The surface area of the catalyzer decreases significantly as the adding the K aid, which can not reduce the reduction ability of the catalyzer but promote the reduction of Co3O4 under the H2 atmosphere. The catalyzer activity decreases as the oxidation of metal cobalt is promoted by the K aid. By adding small amounts K aid, the catalyzer activity drops but the amount of Cl-C4 in the product distribution decreases and the ratio of alkene to alkyl increases. |
2楼2011-01-11 20:10:40
