化学工程2011，Vol.39Issue(10)：73-76,91,5.
氢-水蒸气稀释条件下脱氢催化剂的性能
Characteristics of dehydrogenation catalyst with H2 -steam as diluent
屈一新 1邵振兴 1王际东 1王伟 2李逢昌2
作者信息
- 1. 北京化工大学化学工程学院,北京100029
- 2. 广饶华邦化学有限公司,山东广饶257345
- 折叠
摘要
Abstract
In order to develop more resources of isobutylene as the raw materials of methyl tert-butyl ether (MTBE) , the catalytic behavior of Pt-Sn-K/Al2O3 catalyst in the dehydrogenation of isobutane to isobutylene was studied with H2 and H2 -steam as diluents. The results show that the conversion of isobutane in H2 -steam conditions grows more quickly than that in H2 conditions when heightening the reaction temperature. Compared with using H2 only, using H2-steam as a diluent significantly increases the conversion of isobutane, the selectivity to isobutylene and the run time on stream. It can also make the catalyst keep nicer stability. In addition, a suitable amount of Sn in the catalyst is also important for obtaining an appropriate conversion of isobutane and high selectivity of isobutylene. The low concentration Sn can improve the conversion of isobutene, whereas the high amount of Sn can reduce it. Finally, the effect of regeneration of the deactivated catalyst was also investigated. The experimental results indicate that the activity of the deactivated catalyst can be fully restored when the catalyst is regenerated by coke buming-off and reduction.关键词
异丁烷/脱氢/Pt-Sn-K/Al2O3催化剂/水蒸气/再生Key words
isobutane/dehydrogenation/Pt-Sn-K/Al2O3 catalyst/steam/regeneration分类
化学化工引用本文复制引用
屈一新,邵振兴,王际东,王伟,李逢昌..氢-水蒸气稀释条件下脱氢催化剂的性能[J].化学工程,2011,39(10):73-76,91,5.
