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| rdf:type
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| Description
| - Zeolite SSZ-33 (topology: CON, borosilicate as-synthesized) contains access to the internal void spaces via 10- and 12-ring pores. Borosilicate SSZ-33 was transformed by isomorphous substitution to Al, Ga and Fe form. The acid sites of zeolite samples were investigated using infrared spectroscopy. The different probes (d(3)-acetonitrile, pivalonitrile, pyridine and 2,6-di-tert-butyl-pyridine) were used in this study. Bronsted acidity confirms the isomorphous substitution of B by Al, Ga and Fe in the SSZ-33 framework. It was found that the strength of Bronsted acid sites of zeolites under study decreased in the series: [Al]-SSZ-33 > [Ga]-SSZ-33 > [Fe]-SSZ-33. Upon adsorption of 2,6-di-tert-butyl-pyridine a part of Bronsted acid sites was not accessible (51% [Al]-SSZ-33, 76% [Ga]-SSZ-33 and 78% [Fe]-SSZ-33). The catalytic performance was studied in toluene disproportionation and toluene alkylation with isopropyl alcohol. Toluene conversions decreased in the order: [Al]-SSZ-33 > [Ga]-SSZ-33 > [Fe]-SSZ-33 in all tested reactions. Selectivities to sum of xylene isomers in toluene disproportionation was as follows: [Al]-SSZ-33 > [Ga]-SSZ-33 > [Fe]-SSZ-33. Zeolite [Al]-SSZ-33 and [Fe]-SSZ-33 exhibited the highest ratio xylene/benzene 0.75. In the case of toluene alkylation, the highest selectivities to cymenes were achieved over [Fe]-SSZ-33 and [Ga]-SSZ-33 at 200 degrees C. In the case of [Fe]-SSZ-33 almost no n-propyltoluene was found in the reaction mixture.
- Zeolite SSZ-33 (topology: CON, borosilicate as-synthesized) contains access to the internal void spaces via 10- and 12-ring pores. Borosilicate SSZ-33 was transformed by isomorphous substitution to Al, Ga and Fe form. The acid sites of zeolite samples were investigated using infrared spectroscopy. The different probes (d(3)-acetonitrile, pivalonitrile, pyridine and 2,6-di-tert-butyl-pyridine) were used in this study. Bronsted acidity confirms the isomorphous substitution of B by Al, Ga and Fe in the SSZ-33 framework. It was found that the strength of Bronsted acid sites of zeolites under study decreased in the series: [Al]-SSZ-33 > [Ga]-SSZ-33 > [Fe]-SSZ-33. Upon adsorption of 2,6-di-tert-butyl-pyridine a part of Bronsted acid sites was not accessible (51% [Al]-SSZ-33, 76% [Ga]-SSZ-33 and 78% [Fe]-SSZ-33). The catalytic performance was studied in toluene disproportionation and toluene alkylation with isopropyl alcohol. Toluene conversions decreased in the order: [Al]-SSZ-33 > [Ga]-SSZ-33 > [Fe]-SSZ-33 in all tested reactions. Selectivities to sum of xylene isomers in toluene disproportionation was as follows: [Al]-SSZ-33 > [Ga]-SSZ-33 > [Fe]-SSZ-33. Zeolite [Al]-SSZ-33 and [Fe]-SSZ-33 exhibited the highest ratio xylene/benzene 0.75. In the case of toluene alkylation, the highest selectivities to cymenes were achieved over [Fe]-SSZ-33 and [Ga]-SSZ-33 at 200 degrees C. In the case of [Fe]-SSZ-33 almost no n-propyltoluene was found in the reaction mixture. (en)
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| Title
| - Catalytic applications and FTIR investigation of zeolite SSZ-33 after isomorphous substitution
- Catalytic applications and FTIR investigation of zeolite SSZ-33 after isomorphous substitution (en)
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| skos:prefLabel
| - Catalytic applications and FTIR investigation of zeolite SSZ-33 after isomorphous substitution
- Catalytic applications and FTIR investigation of zeolite SSZ-33 after isomorphous substitution (en)
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| skos:notation
| - RIV/61388955:_____/14:00430102!RIV15-GA0-61388955
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/14:00430102
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - SSZ-33; acidity; toluene alkylation (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Microporous and Mesoporous Materials
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Kubů, Martin
- Žilková, Naděžda
- Kurfiřtová, Lenka
- Vitvarová, Dana
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| http://linked.open...ain/vavai/riv/wos
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| issn
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| number of pages
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| http://bibframe.org/vocab/doi
| - 10.1016/j.micromeso.2014.04.007
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