| Pt/HM和Pd/HM催化剂表面氧的恢复与供出活化能测定 |
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| 引用本文： | 郑小明,顾越鹏,金松寿. Pt/HM和Pd/HM催化剂表面氧的恢复与供出活化能测定[J]. 物理化学学报, 1991, 7(1): 125-128. DOI: 10.3866/PKU.WHXB19910123 |
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| 作者姓名： | 郑小明 顾越鹏 金松寿 |
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| 作者单位： | Department of Chemistry, Hangzhou University |
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| 摘 要： | 催化氧化是最重要的工业催化反应之一。七十年代以来,关于氧化催化剂的基础研究取得了长足的进步,采用各种手段对氧化催化剂的表面及体相氧种进行了考察。本文作者根据研究实用氧化催化剂的经验,结合控制论方法,亦提出了多相催化氧化反应的集团结构适应性规律。近年来,作者用TPD和吸附平衡法研究了V_2O_5/SiO_2催化剂表面氧的种类、数目和供出活性,较好地关联了催化氧化的一些事实,使以上规律更趋于半定量化。在多相氧化反应中,催化剂表面活性氧不断处于供出和恢复的循环之中,催化剂表面氧中心的供
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| 关 键 词： | 活化能 催化剂 氧化 Pt Pd |
| 收稿时间： | 1989-07-24 |
| 修稿时间： | 1990-09-27 |
MEASUREMENT OF THE ACTIVATION ENERGY OF OXYGEN OFFERING AND REPRODUCING ON Pt/HM, Pd/HM CATALYSTS |
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| Zheng Xiaoming Gu Yuepeng Jin Songshou. MEASUREMENT OF THE ACTIVATION ENERGY OF OXYGEN OFFERING AND REPRODUCING ON Pt/HM, Pd/HM CATALYSTS[J]. Acta Physico-Chimica Sinica, 1991, 7(1): 125-128. DOI: 10.3866/PKU.WHXB19910123 |
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| Authors: | Zheng Xiaoming Gu Yuepeng Jin Songshou |
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| Affiliation: | Department of Chemistry, Hangzhou University |
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| Abstract: | Pulse-reacting experiments of gaseous CO with catalyst surface oxygen and gaseous O_2 with reduced catalyst surface were designed in order to measure the activation energy of oxygen offering and the activation energy of oxygen reproducing on the catalyst surface. By the separate measurement of these two kinds of activation energy, the difference in behavior of Pt/HM and Pd/HM catalysts was explained.The activation energy of oxygen offering on Pt/HM is lower than that on Pd/HM, but the oxygen reproducing activation energy on Pt/HM is higher than that on Pd/HM. |
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| Keywords: | Activation energy Catalyst Oxidation Pt Pd |
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