| 载体对负载型Ni-B催化剂催化2-乙基蒽醌加氢制H2O2反应性能的影响 |
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| 引用本文： | 陈雪莹,乔明华,贺鹤勇.载体对负载型Ni-B催化剂催化2-乙基蒽醌加氢制H2O2反应性能的影响[J].催化学报,2011,32(2):325-332. |
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| 作者姓名： | 陈雪莹 乔明华 贺鹤勇 |
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| 作者单位： | 复旦大学化学系上海市分子催化和功能材料重点实验室; |
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| 基金项目： | 国家自然科学基金(20803009,21073043); 国家高技术研究发展计划(2009AA033701); 上海市科学技术委员会项目(10JC1401800,10XD1400300) |
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| 摘 要： | 采用还原剂浸渍法将Ni-B非晶态合金负载到SiO2,γ-Al2O3和活性炭(AC)上,以2-乙基蒽醌选择加氧制H2O2为探针反应,系统研究了载体对Ni-B非晶态合金催化剂结构、热稳定性和催化性能的影响.结果表明,将Ni-B负载到载体上后,其晶化温度显著提高,各催化剂热稳定性依次为Ni-B/AC＞Ni-B/SiO2＞Ni...
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| 关 键 词： | 镍 硼 非晶态合金 二氧化硅 氧化铝 活性炭 负载型催化剂 2-乙基蒽醌 加氢 过氧化氢 |
Effects of Supports on Catalytic Properties of the Supported Ni-B Catalysts for Selective Hydrogenation of 2-Ethylanthraquinone to H2O2 |
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| CHEN Xueying,QIAO Minghua,HE Heyong.Effects of Supports on Catalytic Properties of the Supported Ni-B Catalysts for Selective Hydrogenation of 2-Ethylanthraquinone to H2O2[J].Chinese Journal of Catalysis,2011,32(2):325-332. |
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| Authors: | CHEN Xueying QIAO Minghua HE Heyong |
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| Institution: | CHEN Xueying,QIAO Minghua,HE Heyong Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Fudan University,Shanghai 200433,China |
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| Abstract: | Supported Ni-B amorphous alloy catalysts were prepared by a reductant-impregnation method using commercial SiO2,γ-Al2O3,and active carbon(AC) as supports. The effects of the supports on the texture,thermal stability,and catalytic properties of the supported Ni-B catalysts in selective hydrogenation of 2-ethylanthraquinone(eAQ) to H2O2 were studied. It was found that the crystallization tempera-ture of the supported Ni-B catalysts is much higher than ultrafine Ni-B and the stability sequence is Ni-B/AC > Ni-B/SiO2 > Ni-B/γ-Al2O3. The catalytic activity of the supported Ni-B catalysts is in the order Ni-B/SiO2 > Ni-B/γ-Al2O3 > Ni-B/AC,and the C=O selectivity is Ni-B/AC > Ni-B/SiO2 > Ni-B/γ-Al2O3. The different activity of the supported Ni-B catalysts can be attributed to the deviation in the active surface area of the catalysts and the different pore structure of the supports. The different selectivity can be attributed to the different uni-formity of the active sites on the catalysts and the different surface properties of the supports. |
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| Keywords: | nickel boron amorphous alloy silica alumina active carbon supported catalyst 2-ethylanthraquinone hydrogenation hy-drogen peroxide |
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