The repeated and stability experiments of PED-01 catalyst for ethylbenzene dehydrogenation were investigated in 100 mL isothermal evaluation device. The results showed that the average ethyl-benzene conversion of 79. 51% ,the selectivity to styrene of 95. 91% ,and styrene yield of 76. 25% over PED-01 catalyst were attained under the condition as follows: reaction temperature 620 ℃, space velocity 1.0 h-1 ,the mass ratio of steam to ethylbenzene 2:1 ,and atmospheric pressure. Ethylbenzene conversion and styrene yield over PED-01 catalyst were slightly higher,and deactivation rate was slower than those of the imported catalyst. PED-01 catalyst exhibited better stability.%自主开发的PED - 01乙苯脱氢催化剂在100 mL等温评价装置上进行了重复试验和稳定性试验,在反应温度620℃、空速1.0h-1、水蒸汽与乙苯质量比2:1和常压条件下,催化剂的乙苯平均转化率为79.51％,苯乙烯平均选择性为95.91％,苯乙烯平均收率为76.25％.侧线装置上条件试验和稳定性试验结果表明,PED -01催化剂的乙苯转化率和苯乙烯平均收率均优于进口催化剂,失活速率比进口催化剂慢,具有更好的稳定性.
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