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Właściwości katalityczne Cr/SBA-1 w procesie odwodornienia propanu do propenu w obecności CO2 – wpływ tekstury i powierzchni właściwej nośnika

Niemczyk-Wrzeszcz M., Michorczyk P.

Czasopismo Techniczne. Chemia

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2012

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R. 109, z. 1-Ch

109--118

PL

Na bazie materiałów SBA-1 otrzymano serie katalizatorów chromowych zawierających 5% mas. Cr. Katalizatory scharakteryzowano różnymi metodami fizykochemicznymi. Aktywność katalityczną układów zbadano w procesie odwodornienia propanu do propenu w obecności CO2. Badania wykazały, że aktywność badanych katalizatorów rośnie ze wzrostem powierzchni właściwej nośnika SBA-1. Z kolei tekstura ma niewielki wpływ na właściwości katalityczne (objętość porów i ich średni wymiar).

EN

On the basis of the SBA-1 materials, series of chromium catalysts containing 5wt% Cr were obtained. The catalysts were characterized by various physicochemical techniques. The catalytic performance was investigated in the dehydrogenation of propane process in the presence of CO2. Studies have shown that the catalytic activity increases with the increase of specific surface area of support. The total pore volume and pore size (texture) of the support have insignificant influence on the catalytic properties.

2

Fast and easy preparation of a novel highly acidic sulfonic-functionalized SBA-1 cubic mesoporous catalyst and its application in the esterification of palmitic acid

Abbasi A., Mahjoub A. R., Badiei A. R.

Materials Science Poland

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2010

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Vol. 28, No. 3

617--624

EN

Propylsulfonic acid-functionalized cubic mesoporous silica was prepared through in situ oxidization of mercaptopropyl groups with H2O2 during co-condensation of tetraethyl orthosilicate and 3-mercaptopropyl trimethoxysilane under strong acidic conditions. The materials obtained with 5-20 mol % loadings of sulfonic acid groups had surface areas of up to 1300 m2/g and pore sizes of around 2.5 nm. Next, the catalytic activity of this material was investigated in esterification of palmitic acid as a compound model in the process of biodiesel production. Methyl ester production by this new nanoporous catalyst shows a very remarkable yield during a mild liquid phase reaction.

3

A novel highly acidic sulfonic functionalized SBA-1 cubic mesoporous catalyst and its application in the esterification of palmitic acid

Abbasi A., Reza Mahjoub A., Badiei A. R.

Materials Science Poland

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2010

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Vol. 28, No. 2

565--572

EN

Propylsulfonic acid functionalized cubic mesoporous silica was fabricated through in situ oxidization of mercaptopropyl groups with H2O2 during co-condensation of tetraethyl orthosilicate and 3-mercaptopropyl trimethoxysilane under strong acidic conditions. The materials obtained with 5-20 mol % loadings of sulfonic acid groups had surface areas of up to 1300 m2/g and pore sizes of ca. 2.5 nm. The catalytic activity of this material was investigated: tests were performed on the esterification of palmitic acid being a model compound in the process of biodiesel production. Methyl ester yield on this new nanoporous catalyst is very remarkable during a mild liquid phase reaction.