Synthesis of intermetallic transition metal-main group metal nanoparticles in ionic liquids

离子液体中金属间过渡金属-主族金属纳米颗粒的合成

• 批准号: 253312285
• 负责人: Professor Dr. Roland A. Fischer
• 金额: --
• 依托单位: Lehrstuhl für nanoporöse und nanoskalierte Materialien
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/253312285?language=en
• 关键词: Synthesis; intermetallic; transition; metal; main

The synthesis of intermetallic, i.e. bi-metallic, nanoparticles (NPs) with transition metal/main group metal combinations TM/E (TM = Fe, Ni; E = Al, Ga, In) based on organometallic precursor chemistry will be investigated with special emphasis on the reaction control given by ionic liquids (ILs) as a non-conventional medium. The deposition of the NPs onto supports will be done. Applications in hydrogenation catalysis will be investigated.The expected progress beyond the state of the art is seen in the specific opportunities offered by ILs for reaction control of precursor decomposition and cluster/nanoparticle growth kinetics without the need of additional stabilizers by low-temperature, fast and energy-saving hydrogenolysis or microwave heating techniques. Thereby ILs should help to overcome limitations of existing chemical strategies using conventional solvents and techniques for bottom-up nanoalloy and nanoparticle synthesis. The chemical and physical properties of IL derived nanoalloys, e.g., in catalysis, are expected to be different from similar nanoalloys obtained by conventional wet-chemical methods in the presence of additional stabilizers.

基于有机金属前驱体化学合成过渡金属/主族金属组合Tm/E(Tm=Fe，Ni；E=Al，Ga，In)的金属间化合物，即双金属纳米颗粒(NPs)，重点研究离子液体(ILS)作为非常规介质对反应的控制。将NPs沉积到载体上。通过低温、快速和节能的氢解或微波加热技术，ILS为控制前体分解的反应和团簇/纳米颗粒的生长动力学提供了独特的机会，而不需要额外的稳定剂。因此，ILS应该有助于克服使用传统溶剂和自下而上的纳米合金和纳米颗粒合成技术的现有化学策略的局限性。离子液体衍生的纳米合金的化学和物理性质，例如在催化方面，有望不同于通过传统的湿化学方法在存在额外稳定剂的情况下获得的类似纳米合金。