The reduction of nickel deposits on silica-alumina(SiAl)and cerium-ex- changed Y zeolite(CeHY)before and after passivation with antimony and tin compounds has beon studied by means of TPR and ESR methods.

• 本文用程序升温还原(TPR)方法研究了硅铝(SiAl)和铈 Y 型分子筛(CeHY)催化剂上沉积镍钝化前后的还原情况。