Protonated Poly(ethylene imine)-Coated Silica Nanoparticles for Promoting Hydrogen Generation from the Hydrolysis of Sodium Borohydride.,ChemPlusChem

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Protonated Poly(ethylene imine)-Coated Silica Nanoparticles for Promoting Hydrogen Generation from the Hydrolysis of Sodium Borohydride.
ChemPlusChem ( IF 3.0 ) Pub Date : 2019-12-03 , DOI: 10.1002/cplu.201900609
Lijing Yang ₁ , Xiaoshan Huang ₁ , Jiapeng Zhang ₁ , Hua Dong ₁

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Nonmetal catalysts are attracting a great deal of attention because of their advantages including high activity, low cost, and environmental friendliness. In this work, a nonmetal catalyst for NaBH4 hydrolysis was fabricated through covalent modification of silica nanoparticles with protonated poly(ethylene imine). The successful formation of the catalyst was verified by transmission electron microscopy, thermogravimetric analysis, and Fourier transform infrared spectroscopy. The fabricated catalyst shows excellent activity in catalyzing NaBH4 hydrolysis reactions. The hydrolysis of 15 mg NaBH4 catalyzed by 50 mg catalyst could provide a hydrogen generation rate as high as 117.53 mL min-1 g cat - 1 at 20 °C. Although the catalytic activity decreased after use, it could be restored easily by regenerating in acetic acid solution.

中文翻译：

用于促进硼氢化钠水解产生氢的质子化聚乙烯亚胺涂层二氧化硅纳米粒子。

非金属催化剂由于其优点包括高活性，低成本和环境友好性而引起了广泛的关注。在这项工作中，通过质子化的聚乙烯亚胺对二氧化硅纳米粒子的共价修饰，制备了用于NaBH4水解的非金属催化剂。通过透射电子显微镜，热重分析和傅里叶变换红外光谱法验证了催化剂的成功形成。制备的催化剂在催化NaBH4水解反应中显示出优异的活性。50 mg催化剂催化15 mg NaBH4的水解可在20°C下提供高达117.53 mL min-1 g cat-1的氢气产生速率。尽管使用后催化活性降低，但是可以通过在乙酸溶液中再生而容易地恢复。

更新日期：2019-12-03

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