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| 乙烷氧化脱氢用Ni/Al2O3催化剂中活性镍物种前驱体（英文） | |
| 引用本文： | Lucie Smoláková,árka Botková,Libor apek,Peter Priecel,Agnieszka Soltysek,Martin Kout,Lenka Matějová.乙烷氧化脱氢用Ni/Al2O3催化剂中活性镍物种前驱体（英文）[J].催化学报,2013,34(10):1905-1913. |
| 作者姓名： | Lucie Smoláková árka Botková Libor apek Peter Priecel Agnieszka Soltysek Martin Kout Lenka Matějová |
| 作者单位： | a Department of Physical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; b Nanotechnology Centre, V?B-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic |
| 基金项目： | financial support of the project ‘Router’ Development of Research Teams at the University of Pardubice(Project No.CZ.1.07/2.3.00/30.0058);the support in the framework of the project Opportunity for Young Researchers(CZ.1.07/2.3.00/30.0016);supported by Operational Programme Education for Competitiveness and co-financed by the European Social Fund and the state budget of the Czech Republic |
| 摘 要： | Ni/Al2O3 catalysts for oxidative dehydrogenation(ODH) of ethane were prepared by impregnation of Al2O3 with nickel acetate or nickel nitrate,and by mechanical mixing of NiO and Al2O3.The Ni-based catalysts were characterized by N2 adsorption-desorption,X-ray diffraction,diffuse reflectance UV-visible diffuse reflectance spectroscopy,and temperature-programmed reduction of hydrogen.The results showed that formation of crystalline NiO particles with a size of < 8 nm and/or non-stoichiometric NiO species in the Ni/Al2O3 catalysts led to more active species in ODH of ethane under the investigated reaction conditions.In contrast,tetrahedral Ni species present in the catalysts led to higher selectivity for ethene.Formation of large crystalline NiO particles(22-32 nm) over Ni/Al2O3 catalysts decreased the selectivity for ethene. |
| 关 键 词： | Alumina Ethane Oxidative dehydrogenation Nickel species |
| 收稿时间： | 2013-06-12 |
Precursors of active Ni species in Ni/Al2O3 catalysts for oxidative dehydrogenation of ethane |
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| Lucie Smol&#,kov&#,&#,&#,rka Botkov&#,Libor &#,apek,Peter Priecel,Agnieszka So&#,tysek,Martin Kout,Lenka Mat&#,jov&#.Precursors of active Ni species in Ni/Al2O3 catalysts for oxidative dehydrogenation of ethane[J].Chinese Journal of Catalysis,2013,34(10):1905-1913. | |
| Authors: | Lucie Smol&# kov&# &# &# rka Botkov&# Libor &# apek Peter Priecel Agnieszka So&# tysek Martin Kout Lenka Mat&# jov&# |
| Institution: | a Department of Physical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; b Nanotechnology Centre, V?B-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic |
| Abstract: | Ni/Al2O3 catalysts for oxidative dehydrogenation (ODH) of ethane were prepared by impregnation of Al2O3 with nickel acetate or nickel nitrate, and by mechanical mixing of NiO and Al2O3. The Ni-based catalysts were characterized by N2 adsorption-desorption, X-ray diffraction, diffuse reflectance UV-visible diffuse reflectance spectroscopy, and temperature-programmed reduction of hydrogen. The results showed that formation of crystalline NiO particles with a size of < 8 nm and/or non-stoichiometric NiO species in the Ni/Al2O3 catalysts led to more active species in ODH of ethane under the investigated reaction conditions. In contrast, tetrahedral Ni species present in the catalysts led to higher selectivity for ethene. Formation of large crystalline NiO particles (22-32 nm) over Ni/Al2O3 catalysts decreased the selectivity for ethene. |
| Keywords: | Nickel Alumina Ethane Oxidative dehydrogenation Nickel species |
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