炭表面氧化物的形成和分解

• 作 者: P.Soularo 苏艳春
• 出 处: 新型碳材料
• 发表日期: 1991年01期
• 关键词: 热解吸 表面氧化物 空气氧化 重量损失 石墨化处理 化学吸附 热分解 热脱附 吸附温度 吸着

一、引言许多著作都讨论炭表面上吸着氧后表面氧化物的形成和热分解。目前的研究中,在排除跟大气的任何中间接触下,用同一样品完成了氧的化学吸附和程序控制的热解吸。二、实验研究了两种材料:一种是炉黑Vulcan3,经过2500℃下的石墨化处理并于500℃下被空气氧化至重量损失达30％;另一种是Cabot公司生产的槽发碳黑CarbolacI,经空气于600-700℃氧化。这两个样品均于950℃下和1MPa压力下脱气两小时。

I. INTRODUCTION Many works discuss the formation and thermal decomposition of surface oxides after oxygen adsorption on carbon surfaces. In the present study, chemical chemisorption by oxygen and programmed thermal desorption were performed using the same sample without any intermediate contact with the atmosphere. Second, two kinds of materials have been studied experimentally: one is furnace black Vulcan3, which is graphitized at 2500 ℃ and oxidized by air to a weight loss of 30% at 500 ℃. The other is Cabot’s carbon black Black CarbolacI, the air at 600-700 ℃ oxidation. Both samples were degassed for two hours at 950 ° C and 1 MPa pressure.