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ducts are 1-butene, dibutylether and water, and an isomerization reaction leads to 2-butene. experimental parameters like reaction temperature, reactant partial pressure and contact time on the activity of our catalyst.tive phenomenon between direct and consecutive dehydration reactions. 1-Butanol dehydration has been studied on pure Y -A~~O J . Dehydration pro-The aim of this work was to obtain basic information on the influences of We propoae a reaction pathway where the most important fact is a competi- INTRODUCT IONAlcohol dehydration haa been studied since many years (1) and catalytically carried out on aluminas, sulfates and phosphates, aimple (Cr, Si, Ti, Be, Zn, ... ) or mixed metallic oxides (e.g. silica-alumina) and zeolite6 (1,2,3). Ion exchange resins have also been used ( 4 ) .fins and ethers (1). In the case of 1-butanol, dehydration laada to water, 1-butene and dibutylether. In addition, isomerization of 1-butene occurs in parallel along with 1-butanol dehydration and leads to 2-butanes (cis and trans) ( 5 ) . Alcohol dehydration on aluminas gives, as reaction products, water, ole- Olefin formationVarious reaction schemes for alcohol dehydration to olefins have been proposed by authors (2). They are always based on acid-base mechanisms, as shown below on the example of ethanol dehydration.

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