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Ordered mesoporous $Ga_2O_3$ and $Ga_2O_3-Al_2O_3$ prepared by nanocasting as effective catalysts for propane dehydrogenation in the presence of $CO_2$
Ordered mesoporous $Ga_2O_3$ and $Ga_2O_3-Al_2O_3$ prepared by nanocasting as effective catalysts for propane dehydrogenation in the presence of $CO_2$
Ordered mesoporous $Ga_2O_3$ and $Ga_2O_3-Al_2O_3$ prepared by nanocasting as effective catalysts for propane dehydrogenation in the presence of $CO_2$
pl
dc.type
JournalArticle
pl
dc.description.physical
95-100
pl
dc.abstract.en
Thermally stable mesoporous gallium and gallium–aluminum (atomic ratio of Ga/Al = 4/1 and 1/4) oxides with controlled textural and structural properties were prepared by means of the nanocasting approach. All materials have uniform micron-sized particles, with a quite narrow pore-size distribution centered in the range of 6.2–6.5 nm and specific surface areas as high as 231–322 m2·g− 1. Pure mesoporous gallium and gallium–aluminum (Ga/Al = 4:1) oxides exhibit a promising catalytic performance in the dehydrogenation of propane to propene in the presence of CO2 (DHP-CO2). Over the most active materials, during 4 h on stream at 823 K, propene was produced with the yield of 10–18% and high selectivity of 91–95%. Moreover, pure mesoporous gallium oxide exerted a higher resistance on deactivation during the DHP-CO2 process in comparison with gallium oxide prepared without a hard template.
pl
dc.subject.en
nanocasting
pl
dc.subject.en
gallium oxide
pl
dc.subject.en
dehydrogenation
pl
dc.subject.en
carbon dioxide
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dc.subject.en
propene
pl
dc.description.volume
35
pl
dc.description.points
30
pl
dc.identifier.doi
10.1016/j.catcom.2013.01.019
pl
dc.identifier.eissn
1873-3905
pl
dc.title.journal
Catalysis Communications
pl
dc.language.container
eng
pl
dc.affiliation
Wydział Chemii : Zakład Technologii Chemicznej
pl
dc.subtype
Article
pl
dc.rights.original
bez licencji
pl
.pointsMNiSW
[2013 A]: 30
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