| 纳米KH颗粒的热稳定性及其化学反应活性 |
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| 引用本文： | 范荫恒,廖世健,李伟娜,徐杰,王复东.纳米KH颗粒的热稳定性及其化学反应活性[J].物理化学学报,2002,18(1):55-58. |
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| 作者姓名： | 范荫恒 廖世健 李伟娜 徐杰 王复东 |
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| 作者单位： | Department of Chemistry, Liaoning Normal University, Dalian 116029;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, P.O.BOX 110 Dalian 116023;State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032 |
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| 基金项目： | 国家自然科学基金(50071025)，辽宁省教育厅科研基金(20042095)资助项目~~ |
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| 摘 要： | 考察了纳米尺寸的KH颗粒在不同温度热处理后比表面积的变化及其与化学反应活性之间的关系.纳米KH热处理后，比表面积随着热处理温度升高而减小，但单位表面的化学反应活性却增大.表明热处理改变了KH表面的状态，说明大的比表面积是构成纳米KH高活性的一个主要原因，而具有高表面能的表面也是高活性的一个重要因素.纳米KH具有使苯乙烯快速聚合的催化作用.
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| 关 键 词： | 纳米氢化钾 热稳定性 反应活性 催化加氢 加氢脱氯 |
| 收稿时间： | 2001-06-18 |
| 修稿时间： | 2001年6月18日 |
Thermal Stability of Nano-KH Particles and Their Chemical Reactivities |
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| Fan Yin Heng Liao Shi Jian, Li Wei Na Xu Jie Wang Fu Dong.Thermal Stability of Nano-KH Particles and Their Chemical Reactivities[J].Acta Physico-Chimica Sinica,2002,18(1):55-58. |
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| Authors: | Fan Yin Heng Liao Shi Jian Li Wei Na Xu Jie Wang Fu Dong |
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| Institution: | Department of Chemistry, Liaoning Normal University, Dalian 116029;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, P.O.BOX 110 Dalian 116023;State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032 |
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| Abstract: | The variation of specific surface area and chemical reactivity of nano KH particles treated at different temperatures has been studied. The BET surface area of nano KH decreases with the increase of heat treatment temperature, while the chemical reactivity per unit surface increases steadily. These results indicate that the state of KH surface is changed after heat treatment. Large specific surface area of nano KH is a major factor for its high chemical reactivity, nevertheless, the surface in an activated state with high surface energy is also an important factor for its high chemical reactivity. Nano KH alone can polymerize styrene rapidly with the formation of polystyrene. |
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| Keywords: | Nano KH Thermal stability Reactivity Catalytic hydrogenation Hydrodechlorination |
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