The Explosive Decomposition of Formic Acid on Clean Ni(110)
The Explosive Decomposition of Formic Acid on Clean Ni(110)
复制标题
甲酸在洁净Ni(110)上的爆炸分解
DOI：
--
复制
发表时间：
1974
期刊：
影响因子：
--
通讯作者：
R. Madix
中科院分区：
文献类型：
--
作者：
J. Falconer;J. Mccarty;R. Madix
使用质谱快速解吸方法研究甲酸在37°C下吸附在清洁镍（110）上后的分解。表面清洁度通过AES和LEED验证。闪解吸预吸附的DCOOH显示没有H2，HD，或H2O峰，表明酸氢解吸后立即甲酸吸附。等温分解表明，发生了表面爆炸，形成CO2和D2。爆炸的动力学是一致的机制，其速率取决于局部表面浓度的甲酸盐络合物和裸金属原子。DCOOH分解的一级速率常数为1.6×1015 exp {-26.6（kcal/gmole）/RT}sec-1。
Mass spectrometric flash desorption methods were used to study the formic acid decomposition following adsorption at 37°C on clean nickel (110). The surface cleanliness was verified by AES and LEED. Flash desorption of preadsorbed DCOOH showed no H2, HD, or H2O peaks, indicating that the acid hydrogen desorbed immediately upon formic acid adsorption. Isothermal decomposition showed that a surface explosion occurred to form CO2 and D2. The kinetics of the explosion were consistent with a mechanism the rate of which was dependent on the local surface concentration of formate complexes and bare metal atoms. The first-order rate constant for the DCOOH decomposition was 1.6×1015 exp {-26.6(kcal/gmole)/RT}sec-1.