Activity of vanadium magnesium oxide supported catalysts in the dehydrogenation of isobutane

Ogonowski, Jan; Skrzyńska, Elżbieta

doi:10.1007/s10562-006-0132-9

Cited by 30 publications

(14 citation statements)

References 22 publications

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“…It is less extensively studied in comparison to the CO2-assisted dehydrogenation of ethane and propane. The catalysts reported for this reaction mainly consist of iron oxide [16], vanadium-magnesium oxide [17], V2O5 [18], LaBaSm oxide [19], and NiO [15]. There is still a challenge in enhancing the catalytic activity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Dehydrogenation of Isobutane with Carbon Dioxide over SBA-15-Supported Vanadium Oxide Catalysts

et al. 2016

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A series of vanadia catalysts supported on SBA-15 (V/SBA) with a vanadia (V) content ranging from 1% to 11% were prepared by an incipient wetness method. Their catalytic behavior in the dehydrogenation of isobutane to isobutene with CO 2 was examined. The catalysts were characterized by N 2 adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and temperature-programmed reduction (TPR). It was found that these catalysts were effective for the dehydrogenation reaction, and the catalytic activity is correlated with the amount of dispersed vanadium species on the SBA-15 support. The 7% V/SBA catalyst shows the highest activity, which gives 40.8% isobutane conversion and 84.8% isobutene selectivity. The SBA-15-supported vanadia exhibits higher isobutane conversion and isobutene selectivity than the MCM-41-supported one.

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Section: Introductionmentioning

confidence: 99%

Dehydrogenation of Isobutane with Carbon Dioxide over SBA-15-Supported Vanadium Oxide Catalysts

et al. 2016

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“…Many researchers have attempted to employ CO 2 as a mild oxidant in the oxidative dehydrogenation of isobutane [3][4][5][6][7][8], where the dehydrogenation is coupled with the reverse water gas shift (RWGS) reaction:…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, CO 2 can suppress the carbonaceous deposition by reaction with coke to form CO [6,8], so the deactivation of the catalyst was suppressed, and the stability of the catalyst was enhanced. The catalysts V-Mg-O [4,6], VO x [3,5], Cr 2 O 3 [7] and Fe-O [8] have been used for this reaction. However, there are some disadvantages e.g., low isobutene yield and poor catalyst stability.…”

Section: Introductionmentioning

confidence: 99%

Coupling dehydrogenation of isobutane to produce isobutene in carbon dioxide over NiO/γ-Al2O3 catalyst

Ding

Shao

et al. 2010

Reac Kinet Mech Cat

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The dehydrogenation of isobutane to produce isobutene coupled with reverse water gas shift (RWGS) reaction in the presence of carbon dioxide was investigated over a NiO/c-Al 2 O 3 catalyst. The results illustrated that the coupling dehydrogenation of isobutane in carbon dioxide over NiO/c-Al 2 O 3 catalyst is effective, and the NiO/Al 2 O 3 catalyst was modified with deposited carbon by impregnation of alumina with an aqueous solution of Ni(H 2 NCH 2 CH 2 NH 2 ) x (NO 3 ) 2 . Carbon modification can decrease the total acidity of the NiO/c-Al 2 O 3 catalyst and enhance the dispersion of NiO active phase. Furthermore, carbon has low acidity and anti-coking performance, so the carbon modification is effective in suppressing the coke formation and side reactions occurrence. Therefore, the catalyst stability and the isobutene selectivity are improved significantly by the carbon modification.

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“…Compared to the extensive studies on the CO 2 -assisted dehydrogenation of ethane and propane, [6,[14][15][16] there is less work reported on the dehydrogenation of isobutane to isobutene in the presence of CO 2 . The catalysts reported for this reaction mainly comprise of iron oxide, [17] vanadium-magnesium oxide, [18] [19,20] LaBaSm oxide [21] and NiO. [13] Nakagawa et al reported that oxidized diamond-supported chromia is more active than supported vanadia for propane dehydrogenation in the presence of CO 2 , but the former catalyst is less active than the latter one for isobutane dehydrogenation in the presence of CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Dehydrogenation of Isobutane to Isobutene with Carbon Dioxide over SBA‐15‐Supported Chromia‐Ceria Catalysts

et al. 2017

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A series of SBA‐15‐supported chromia‐ceria catalysts with 3% Cr and 1%–5% Ce (3Cr‐Ce/SBA) were prepared using an incipient wetness impregnation method. The catalysts were characterized by XRD, N2 adsorption, SEM, TEM‐EDX, Raman spectroscopy, UV–vis spectroscopy, XPS and H2‐TPR, and their catalytic performance for isobutane dehydrogenation with CO2 was tested. The addition of ceria to SBA‐15‐supported chromia improves the dispersion of chromium species. 3Cr‐Ce/SBA catalysts are more active than SBA‐15‐supported chromia (3Cr/SBA), which is due to a higher concentration of Cr6+ species present on the former catalysts. The 3Cr‐3Ce/SBA catalyst shows the highest activity, which gives 35.4% isobutane conversion and 89.6% isobutene selectivity at 570 °C after 10 min of the reaction.

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Activity of vanadium magnesium oxide supported catalysts in the dehydrogenation of isobutane

Cited by 30 publications

References 22 publications

Dehydrogenation of Isobutane with Carbon Dioxide over SBA-15-Supported Vanadium Oxide Catalysts

Dehydrogenation of Isobutane with Carbon Dioxide over SBA-15-Supported Vanadium Oxide Catalysts

Coupling dehydrogenation of isobutane to produce isobutene in carbon dioxide over NiO/γ-Al2O3 catalyst

Dehydrogenation of Isobutane to Isobutene with Carbon Dioxide over SBA‐15‐Supported Chromia‐Ceria Catalysts

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