Process of oxidative dehydrogenation using a boria-alumina catalyst

The invention relates to a process of oxydehydrogenating an alkyl-substited aromatic hydrocarbon starting compound into the corresponding alkenyl-substituted aromatic hydrocarbon product, respectively, which process comprises a step of contacting the starting compound and an oxidant at dehydrogenati...

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Bibliographic Details
Main Authors EL-YAHYAOUI KHALID K, DAOUS MOHAMMAD, AL-ZAHRANI ABDULRAHIM, AL-HAMED YAHIA
Format Patent
LanguageChinese
English
Published 24.03.2010
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:The invention relates to a process of oxydehydrogenating an alkyl-substited aromatic hydrocarbon starting compound into the corresponding alkenyl-substituted aromatic hydrocarbon product, respectively, which process comprises a step of contacting the starting compound and an oxidant at dehydrogenating conditions, in the presence of a boria-alumina catalyst, characterized in that the boria-aluminacatalyst has been prepared by a co-precipitation method. The co-precipitation method comprises the steps of preparing a solution of aluminium salt in an organic medium, followed by adding to this solution a boron compound and then adding ammonia gas to the mixture obtained in previous step to form a precipitate and/or a gel. This process enables oxydehydrogenation of ethyl-benzene to styrene withhigh selectivity.
Bibliography:Application Number: CN200880016907