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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Nickel-alumina composite aerogel catalysts with a high nickel load: a novel fast sol-gel synthesis procedure and screening of catalytic properties
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Nickel-alumina composite aerogel catalysts with a high nickel load: a novel fast sol-gel synthesis procedure and screening of catalytic properties

机译：高镍负载量的镍铝复合气凝胶催化剂：新型快速溶胶-凝胶合成工艺和催化性能筛选

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摘要

Nickel-alumina composite aerogels with large nickel loading were synthesized using a novel complexing agent-assisted sol-gel procedure to obtain materials displaying very large and open internal surface area, easily accessible for large molecules and demonstrating excellent catalytic properties. They were tested in the following reactions: (i) hydrogenation of propene and 1-butene, (ii) methanization of carbon dioxide, (iii) isometization of 1-butene, (iv) dehydrogenation of cyclohexane, (v) conversion of equimolar mixture of CO and NO to CO2 and N-2 Full conversions and 100% selectivities were obtained in reactions (i), (ii), (iv) and (v) and an equilibrium composition in reaction (iii). These catalysts showed no pyrophoric activity on exposing to air even at Ni content as large as 50 wt%. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 23]
机译：使用新型络合剂辅助溶胶-凝胶法合成了具有较大镍负载量的镍铝复合气凝胶，得到的材料显示出非常大和开放的内表面积，大分子易于接近并显示出优异的催化性能。在以下反应中对它们进行了测试：（i）丙烯和1-丁烯的氢化，（ii）二氧化碳的甲烷化，（iii）1-丁烯的异构化，（iv）环己烷的脱氢，（v）等摩尔混合物的转化CO和NO转化为CO2和N-2的反应在反应（i），（ii），（iv）和（v）中获得了完全转化率和100％的选择性，并在反应（iii）中获得了平衡组成。这些催化剂即使暴露在高达50wt％的Ni含量下，也没有表现出自燃活性。 （C）2003 Elsevier Science B.V.保留所有权利。 [参考：23]

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