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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Self-Assembly of Mesoporous Ruthenium-Boron Amorphous Alloy Catalysts withEnhanced Activity in Maltose Hydrogenation to Maltitol
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Self-Assembly of Mesoporous Ruthenium-Boron Amorphous Alloy Catalysts withEnhanced Activity in Maltose Hydrogenation to Maltitol

机译:麦芽糖加氢制麦芽糖醇活性增强的介孔钌-硼非晶态合金催化剂的自组装

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摘要

Ru—B amorphous alloy nanospheres with mesoporous structure were synthesized by chemical reduction of Ru(III) ions with BH_4~- ions coassembling with Brij56 surfactant molecules in lyotropic liquid crystalline phase. During liquid-phase maltose hydrogenation, such mesoporous catalyst exhibited much higher activity than the regular Ru—B solid nanoparticles, obviously owing to the higher surface area. Meanwhile, the mesoporous structure in the Ru—B nanospheres could effectively retarded the agglomeration, leading to longer durability. Besides 100% selectivity to maltitol, its activity was nearly 24 times of industrial Raney Ni and could be used repetitively for many times, showing a good potential in practical applications. The formation of mesoporous Ru—B amorphous alloy and the correlation of the catalytic performance to the structural characteristics were discussed based on detailed characterizations.
机译:通过将BH_4〜-离子与Brij56表面活性剂分子共溶在液溶液晶相中还原Ru(III)离子,合成了具有介孔结构的Ru-B非晶态合金纳米球。在液相麦芽糖加氢过程中,这种介孔催化剂比常规的Ru-B固体纳米颗粒具有更高的活性,这显然是由于表面积较大。同时,Ru-B纳米球中的介孔结构可以有效地阻止团聚,从而导致更长的耐久性。除了对麦芽糖醇的100%选择性外,其活性几乎是工业阮内镍的24倍,可以重复使用多次,在实际应用中显示出良好的潜力。在详细表征的基础上,讨论了介孔Ru-B非晶态合金的形成以及催化性能与结构特征的关系。

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