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Shamilov, N.T.,Vislovskiy, V.P. Korean Chemical Society 2011 대한화학회지 Vol.55 No.1
이소부탄의 산화탈수소반응(ODH)에 대한 $V_{0.9}Sb_{0.1}O_x$ 촉매계의 5가지 담지체의 촉진효과를 조사하였다. 사용된 5가지 담지체는 감마-알루미나, 알파-알루미나, 실리카-알루미나, 실리카겔, 마그네슘 산화물이다. 촉매는 사용된 담지체에 따라 그 효과가 다르게 나타났다: ${\gamma}-Al_2O_3$ > $\alpha$-$Al_2O_3$ > Si-Al-O> $SiO_2$ $\approx$MgO$\gg$unsupported. V-Sb-O 비율은 별로 촉매 활성과 선택성에 영향을 미치지 않았다. 촉매 성분들이 담지체에 골고루 잘 분포된 이유로 인해 감마-알루미나에 담지된 $V_{0.9}Sb_{0.1}O_x$ 촉매계가 성능이 제일 뛰어났다. $V_{0.9}Sb_{0.1}O_x$ systems, bulk and deposited on different supports (five types of $\gamma$-aluminas, $\alpha$-alumina, silica-alumina, silica gel, magnesium oxide), have been tested in the oxidative dehydrogenation (ODH) of iso-butane. Catalytic performance of VSb oxides has shown to be highly dependent on the support and the nature of the support decreasing in a series: $\gamma$-$Al_2O_3$ > $\alpha$-$Al_2O_3$ > Si-Al-O > $SiO_2$ $\approx$ MgO $\gg$ unsupported. Variation of the V-Sb-O-loading in the studied range of coverage (0.5-2 theoretical monolayer) only slightly influences the catalysts' activity and selectivity. The best catalytic performance of $\gamma$-alumina-supported $V_{0.9}Sb_{0.1}O_x$ systems can be explained by the optimal surface interaction between support and supported components resulting in the formation of well-spread amorphous active $VO_x$-component with vanadium in a high oxidation state.
Shamilov, N.T.,Vislovskiy, V.P. Korean Chemical Society 2011 대한화학회지 Vol.55 No.5
[ $V_{0.9}Sb_{0.1}O_x$ ]systems, bulk and deposited on different supports (five types of ${\gamma}$-aluminas, ${\alpha}$-alumina, silica-alumina, silica gel, magnesium oxide), have been tested in the oxidative dehydrogenation (ODH) of iso-butane. This statement is derived from the data obtained by a set of characterisation techniques(specific surface area measurements, X-ray diffraction, X-ray photoelectron spectroscopy, laser Raman spectroscopy, in situ differential scanning calorimetry and in situ diffuse reflectance-absorption infrared Fourier transform spectroscopy).
Hong, Do-Young,Vislovskiy, Vladislav P.,Park, Sang-Eon,Park, Min-Seok,Yoo, Jin-S.,Chang, Jong-San Korean Chemical Society 2005 Bulletin of the Korean Chemical Society Vol.26 No.11
This work presents that carbon dioxide, which is a main contributor to the global warming effect, could be utilized as a selective oxidant in the oxidative dehydrogenation of ethylbenzene. The dehydrogenation of ethylbenzene over alumina-supported vanadium-antimony oxide catalyst has been studied under different atmospheres such as inert nitrogen, steam, oxygen or carbon dioxide as diluent or oxidant. Among them, the addition of carbon dioxide gave the highest styrene yield (up to 82%) and styrene selectivity (up to 97%) along with stable activity. Carbon dioxide could play a beneficial role of a selective oxidant in the improvement of the catalytic behavior through the oxidative pathway.
Hong, Do-Young,Jhung, Sung Hwa,Vislovskiy, V. P.,Chang, Jong-San,Yoo, Jin S.,Park, Sang-Eon,Park, Yeung-Ho 한국공업화학회 2004 응용화학 Vol.8 No.2
Over V-Sb-O/Al₂O₃ catalyst, substantially higher (~ 20 - 60% in relative) conversions of initial hydrocarbons and yields of corresponding alkenylbenzenes have been achieved under the dehydrogenation of ethylbenzene, iso- and n-propylbenzenes, 1,4-diethylbenzene and 4-ethyltoluene in the presence of carbon dioxide, compared to those in inert atmosphere, due to promotional oxidative functions of CO₂ to alleviate the dehydrogenation equilibrium as well as to maintain V-sites in active oxidation state, V^(5+).
N. T. Shamilov,V. P. Vislovskiy 대한화학회 2011 대한화학회지 Vol.55 No.1
V_(0.9)Sb_(0.1)O_x systems, bulk and deposited on different supports (five types of γ-aluminas, α-alumina, silica-alumina,silica gel, magnesium oxide), have been tested in the oxidative dehydrogenation (ODH) of iso-butane. Catalytic performance of VSb oxides has shown to be highly dependent on the support and the nature of the support decreasing in a series: γ-Al_2O_3 > α-Al_2O_3> Si-Al-O > SiO_2 ≈ MgO >> unsupported. Variation of the V-Sb-O-loading in the studied range of coverage (0.5-2 theoretical monolayer) only slightly influences the catalysts’ activity and selectivity. The best catalytic performance of γ-alumina-supported V_(0.9)Sb_(0.1)O_x systems can be explained by the optimal surface interaction between support and supported components resulting in the formation of well-spread amorphous active VO_x-component with vanadium in a high oxidation state.
Jong-San Chang,Vladislav P. Vislovskiy,박상언,Min-Seok Park,Jin S. Yoo,홍도영 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.11
This work presents that carbon dioxide, which is a main contributor to the global warming effect, could be utilized as a selective oxidant in the oxidative dehydrogenation of ethylbenzene. The dehydrogenation of ethylbenzene over alumina-supported vanadium-antimony oxide catalyst has been studied under different atmospheres such as inert nitrogen, steam, oxygen or carbon dioxide as diluent or oxidant. Among them, the addition of carbon dioxide gave the highest styrene yield (up to 82%) and styrene selectivity (up to 97%) along with stable activity. Carbon dioxide could play a beneficial role of a selective oxidant in the improvement of the catalytic behavior through the oxidative pathway.