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Citation: Song Wei, Liang Zhen-Cheng, Qin Yong-Ning. Influence of the Method of Adding Potassium Promoter on Catalyst for Dehydrogenation of Diethylbenzene[J]. Acta Physico-Chimica Sinica, ;1997, 13(01): 79-82. doi: 10.3866/PKU.WHXB19970117 shu

Influence of the Method of Adding Potassium Promoter on Catalyst for Dehydrogenation of Diethylbenzene

1.
College of Tianjin Chemical Engineering,Tianjin 300402

Received Date: 11 April 1996
Available Online: 15 January 1997

The catalyst for dehydrogenation of diethylbenzene(DEB) to divinylbenzene(DVB) was studied. Potassium-promoted iron oxide catalyst was mainly used for ethylbenzene dehydrogenation. If potassium alkli or salt was used directly as promoter, it was noted that the loss of potassium component from the surface of the catalysts pellet result in deactivation. When potassium promoter was added as kaliophilite(KAlSiO4). It was shown that the latter way of adding potassium promoter not only keeps the depression of carbonaceous deposits but also controls the loss of potassium component(the value of loss of potassium component has been reduced three times) , thus making the catalyst having a higher dehydrogention activity.
- Dehydrogenation catalyst,
- Kaliophilite,
- Reactivity,
- Diethylbenzene
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沈阳化工大学材料科学与工程学院沈阳 110142

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