Nickel nanoparticles (NPs) supported on different undoped or doped with N or B graphenes (Gs) have been tested as catalyst for the hydrosilylation of aldehydes to obtain the corresponding siloxanes with high conversion and good selectivity in short reaction time. The different Gs employed were obtained by pyrolysis under inert atmosphere of alginate or chitosan, modified or not with boric acid. Then the metal NPs obtained by polyol reduction method using ethylene glycol were adsorbed on Gs. The Ni-containing G catalysts were characterized by electron microscopy, XPS and Raman spectroscopy. The scope of the Ni/G catalyst includes aliphatic and aromatic aldehydes as well as a variety of hydrosilanes.

中文翻译：

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负载在石墨烯上的镍纳米颗粒作为醛加氢硅烷化的催化剂

已经测试了负载在不同的未掺杂或掺杂的N或B石墨烯（Gs）上的镍纳米颗粒（NPs）作为醛氢化硅烷化的催化剂，从而在短的反应时间内以高转化率和良好的选择性获得了相应的硅氧烷。通过在藻酸盐或脱乙酰壳多糖的惰性气氛下热解获得的所使用的不同G，用硼酸改性或不使用硼酸。然后将通过使用乙二醇的多元醇还原法获得的金属NPs吸附在Gs上。通过电子显微镜，XPS和拉曼光谱对含Ni的G催化剂进行了表征。Ni / G催化剂的范围包括脂族和芳族醛以及各种氢化硅烷。