发明名称 |
REGENERATION AND STABILIZATION OF DEHYDROGENATION CATALYST |
摘要 |
The present invention relates to a process for catalytically converting an alkylaromatic hydrocarbon into a vinylaromatic hydrocarbon by directing said alkylaromatic hydrocarbon and steam into a reactor containing dehydrogenation catalyst, said process comprising the steps of: (a) forming a mixed reactant stream consisting essentially of said alkylaromatic hydrocarbon and steam; (b) bringing said mixed reactant stream into contact with a dehydrogenation catalyst consisting essentially of iron oxide catalyst promoted with alkali metal and at conditions effective to convert at least a portion of the alkylaromatic hydrocarbon to vinylaromatic hydrocarbon; wherein an effective amount of an alkali metal compound in the form of a powder is injected continuously or intermittently in at least one of the feedstocks sent to the dehydrogenation catalyst; said effective amount of alkali metal compound being sufficient to maintain substantially constant levels of conversion of alkylaromatic hydrocarbon and selectivity of vinylaromatic hydrocarbon.
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申请公布号 |
KR20100007961(A) |
申请公布日期 |
2010.01.22 |
申请号 |
KR20097025442 |
申请日期 |
2008.05.30 |
申请人 |
TOTAL PETROCHEMICALS FRANCE |
发明人 |
LEROUX PATRICE |
分类号 |
C07C5/333;C07C15/44;C07C15/46 |
主分类号 |
C07C5/333 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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