柱状粘土的双功能催化剂:含铁和含钌铝柱状膨润土催化丙烯气相转化为丙酮。

Q4 Chemical Engineering 分子催化 Pub Date : 1994-08-30 DOI:10.1016/0304-5102(94)00064-6
Maurizio Lenarda , Renzo Ganzerla , Loretta Storaro , Stefano Enzo , Roberto Zanoni
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引用次数: 29

摘要

用铝、铝铁和铝钌多氧基支撑天然膨润土。一些粘土的碱阳离子相继与铁交换。用x射线衍射、DTA、TGA、ESCA和N2吸附等手段对制备的柱状粘土进行了表征。根据吸附吡啶的FT-IR光谱估计了Lewis和Brønsted酸位的相对数量。在150 ~ 350℃的温度范围内,所有粘土都产生了丙烯气相转化为丙酮的活性催化剂。该反应似乎是通过酸催化丙烯水化制异丙醇和连续氧化脱氢制丙酮而发生的。所制备样品的反应活性与氧化还原位点和酸位点的性质和数量有关。
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Bifunctional catalysts from pillared clays: Vapour phase conversion of propene to acetone catalyzed by iron and ruthenium containing aluminum pillared bentonites.

A natural bentonite was pillared with aluminum, aluminum—iron and aluminum—ruthenium polyoxocations. The alkali cations of some clays were successively exchanged with iron. The prepared pillared clays were characterized by X-ray diffraction, DTA, TGA, ESCA and N2 adsorption. The relative amount of Lewis and Brønsted acid sites was estimated from FT-IR spectra of adsorbed pyridine. All the clays resulted active catalysts for the vapour phase conversion of propene to acetone in the 150–350°C temperature range. The reaction appeared to occur via acid catalyzed propene hydration to isopropanol and successive oxidative dehydrogenation of the alcohol to acetone. The reactivity of all the prepared samples was correlated to the nature and number of the redox and acid sites.

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来源期刊
分子催化
分子催化 Chemical Engineering-Catalysis
CiteScore
1.50
自引率
0.00%
发文量
2959
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Author index Subject index Hydrolysis of sucrose by dealuminated Y-zeolites Synthesis and application of organophilic polystyrene-montmorillonite supported onium salts in organic reactions Effect of the reduction temperature on the selectivity of the high temperature reaction of acetone and hydrogen over alumina and titania supported nickel and cobalt catalysts
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