摘要
用穆斯堡尔谱、X-射线、XPS和EPMA等手段考察了乙苯脱氢制苯乙烯CS－05型催化剂在工业装置上使用不同周期后的相组成、钾含量及电子结合能等特性的变化，并与相应周期的活性评价数据相关联。实验结果表明，GS-05型催化剂的活性相为Fe3O4，工业装置上催化剂活性的部分衰退是由于主要活性组份Fe2O3。的部分流失、助剂钾的迁移和少量流失所引起的。
The changes in phase composition, potassium content and electronic binding energy of GS-05 ethylbenzene dehydrogenation catalyst in industrial styrene plant after different operating time were investigated with Mossbauer spectra, X-ray, XPS and EPMA. The results were correlated with the activity evaluation data for corresponding operating time. Results of the experiment show that the main active phase of GS-05 catalyst is Fe3O4 Partial deactivation of the catalyst in industrial plants is mainly due topartial loss of active component Fe3O4 and migration and slight loss of potassium promotor.
出处
《工业催化》
CAS
1998年第2期58-62,共5页
Industrial Catalysis
关键词
苯乙烯
催化剂
活性相
乙苯
脱氢
ethylbenzene dehydrogenation catalyst, characterization, active phase, deactivation
