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Citation: Zhang Qiang, Jin Riguang. Relation Between the Phase and Valency State of Co on Co/HZSM-5 Catalyst and Its Reaction Activity on Direct Synthesis of Styrene[J]. Chinese Journal of Applied Chemistry, ;1997, 14(6): 90-92. shu

Relation Between the Phase and Valency State of Co on Co/HZSM-5 Catalyst and Its Reaction Activity on Direct Synthesis of Styrene

Zhang Qiang ,
Jin Riguang

1.
College of Material Science and Technology, Beijing University of Chemical Technology, Beijing 100029

Received Date: 31 March 1997
Available Online: 18 July 1997
Fund Project:

The Co species in Co/HZSM-5 appeared to be in the phase of Co₃O₄, CoO, CoAl₂O₄ spinel, exchanged Co species and metal Co, depending on the calcination and reduction temperature. Co species in the phase of Co₃O₄, CoO and exchanged Co were the active sites on styrene formation, but in the formation of styrene over metal Co phase the crystal plane of the catalyst plays an important role.
- Co/HZSM-5 catalyst,
- phase state,
- valency state,
- styrene synthesis
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