离子阱中过渡金属Ti~ ,Co~ 与O_2的化学反应

利用激光溅射的方法产生并在射频离子阱中囚禁了Ti＋，Co＋离子，利用离子阱的质量选择存储和离子存储时间长等特点，开展了Ti＋，Co＋与O2的化学反应研究，得到了反应物的速率常数和反应产物分支比。结果表明，Co＋比Ti＋具有更大的化学活性，并且其二级产物（CoO2＋）具有更大的解离速率，因而更具有催化特性。

Chemical Reactions of Ti~ , Co~ with O_2 in an RF Ion Trap

Ti , Co ions wer produced and stored in the RF ion traps by laser ablation technique. The chemica reactions of Ti ,Co ions with O2 in the ion traps were studied, taking advantage of the mass selective Storage and long storage time of the ion trap. The chemical reaction rates of each reactants and the branching ra-tios of the end products were measured. Our results showed that Co ions have higher chemical activity than Ti ions,and tha its secondary product(CoO2 ) .has greater dissociative rates. We sugges that Co ions have better performance in the catalytic reactions.