高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (6): 946.

• 论文 • 上一篇    下一篇

微量吸附量热法研究氧化物催化剂的酸碱性质

屠迈, 李大塘, 沈俭一, 陈懿   

  1. 南京大学化学系, 南京, 210093
  • 收稿日期:1997-04-04 出版日期:1998-06-24 发布日期:1998-06-24
  • 通讯作者: 沈俭一
  • 作者简介:屠迈,男,29岁,博±研究生.
  • 基金资助:

    国家教育委员会跨世纪优秀人才基金;国家自然科学基金

Microcalorimetric Studies of Surface Acidity and Basicity of Metal Oxides

TU Mai, LI Da-Tang, SHEN Jian-Yi, CHEN Yi   

  1. Department of Chemistry, Nanjing University, Nanjing, 210093
  • Received:1997-04-04 Online:1998-06-24 Published:1998-06-24

摘要: 利用微量吸附量热技术定量地表征了Eu2O3、CeO2、MgO、ZnO、Al2O3和NiO等氧化物表面酸碱中心的强度和数量,结果表明,样品的NH3和CO2起始吸附热与其Sanderson电负性相关.

关键词: 微量吸附量热, 固体酸碱催化剂, 金属氧化物, 表面酸碱滴定

Abstract: Microcalorimetric adsorption was used to determine quantitatively the number and strength of acid/base sites on the oxide samples of Eu2O3, CeO2, MgO, ZnO, Al2O3 and NiO. The initial heats of NH3 and CO2 adsorption were found to be proportional to Sanderson electronegativities of the samples.

Key words: Microcalorimetric adsorption, Solid acid and base catalyst, Metal oxide, Titration of surface acidity and basicity

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