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纳米LiH的热稳定性与催化加氢反应活性
Thermal Stability of Nano-LiH and Its Catalytic Activity in Hydrogenation
【摘要】 考察了纳米 Li H在不同温度热处理后比表面积的变化及其与 Cp2 Ti Cl2 组成催化剂的加氢反应活性之间的关系 .30 0℃热处理后 Li H比表面积已呈较大幅度的下降 ,但催化剂的加氢反应活性反而更高 ,说明比表面积是构成纳米 Li H高活性的一个主要原因 ,但不是唯一的因素
【Abstract】 The effects of heat treatment at different temperatures under Ar atmosphere on the specific surface area and particle size of nanometric lithium hydride as well as its catalytic activity in hydrogenation have been studied. The specific surface area of LiH treated at 300 ℃ decreases significantly, whereas a much higher catalytic activity is achieved with catalyst composed of nanometric LiH and Cp 2TiCl 2. This result indicates that the large specific surface area of nanometric LiH is a major factor but not the only factor for its high activity.
【关键词】 纳米LiH;
热稳定性;
催化加氢活性;
【Key words】 nanometric lithium hydride; thermal stability; hydrogenation catalytic activity;
【Key words】 nanometric lithium hydride; thermal stability; hydrogenation catalytic activity;
【基金】 国家自然科学基金! (5 0 0 710 2 5 );辽宁省教育厅科研基金! (2 0 0 42 0 95 )
- 【文献出处】 应用化学 ,Chinese Journal of Applied Chemistry , 编辑部邮箱 ,2001年05期
- 【分类号】O614.11
- 【被引频次】8
- 【下载频次】86