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(01): 55-58.
doi:
10.3866/PKU.WHXB20020112
Citation: Fan Yin-Heng, Liao Shi-Jian, Li Wei-Na, Xu Jie, Wang Fu-Dong. Thermal Stability of NanoKH Particles and Their Chemical[J]. Acta Physico-Chimica Sinica, 2002, 18(01): 55-58. doi: 10.3866/PKU.WHXB20020112
Citation: Fan Yin-Heng, Liao Shi-Jian, Li Wei-Na, Xu Jie, Wang Fu-Dong. Thermal Stability of NanoKH Particles and Their Chemical[J]. Acta Physico-Chimica Sinica, 2002, 18(01): 55-58. doi: 10.3866/PKU.WHXB20020112
纳米KH颗粒的热稳定性及其化学反应活性
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.
English
Thermal Stability of NanoKH Particles and Their Chemical
Abstract:
The variation of specific surface area and chemical reactivity of nanoKH particles treated at different temperatures has been studied. The BET surface area of nanoKH 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 nanoKH 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. NanoKH alone can polymerize styrene rapidly with the formation of polystyrene.
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