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Silica-decorated magnetic nanocomposites for catalytic applications

机译:二氧化硅修饰的磁性纳米复合材料,用于催化应用

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Stringent demands from society to address environmental issues and achieve an economically sustainable environment have placed tremendous pressure on industries to replace homogeneous catalyst with recoverable heterogeneous alternatives. Owing to recent advances in science and catalysis technology, these transformations have been revisited for the purpose of developing new nanocatalysts. In this review, we first discuss the background behind the huge interest in the important class of silica-coated magnetic nanoparticles (SMNPs) as nanocatalysts. Next, we discuss the importance of the unique arrangement of silica over magnetic nanoparticles (MNPs). Particular attention is given to recent developments and advances in spatial organization, functionalization and protection of these silica supported nanocatalysts. Synthetic protocols and applications of these nanomaterials for different organic transformations, such as carbon-carbon coupling reactions, acetylation, oxidation, hydrogenation, olefin-metathesis, asymmetric synthesis, photo-catalytic and other green reactions, are briefly discussed, providing a basic outline of the work performed to date. Exploration of the potential contribution of these nanoparticles (NPs) as recoverable, efficient and selective catalysts in various industrially significant organic transformations is the primary objective of these methodologies. (C) 2015 Elsevier B.V. All rights reserved.
机译:社会对解决环境问题和实现经济上可持续的环境提出了严格的要求,这给行业带来了巨大的压力,要求它们用可回收的非均质替代品代替均相催化剂。由于科学和催化技术的最新进展,为了开发新的纳米催化剂,已经重新考虑了这些转变。在这篇综述中,我们首先讨论对重要的一类二氧化硅涂层磁性纳米颗粒(SMNPs)作为纳米催化剂的巨大兴趣背后的背景。接下来,我们讨论二氧化硅在磁性纳米颗粒(MNP)上独特排列的重要性。特别关注这些二氧化硅负载的纳米催化剂在空间组织,功能化和保护方面的最新进展。简要讨论了这些纳米材料用于不同有机转化的合成方案和应用,例如碳-碳偶联反应,乙酰化,氧化,氢化,烯烃复分解,不对称合成,光催化和其他绿色反应,为迄今为止完成的工作。这些方法学的主要目的是探索这些纳米颗粒(NPs)在各种工业上重要的有机转化中作为可回收,高效和选择性催化剂的潜在贡献。 (C)2015 Elsevier B.V.保留所有权利。

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