用于合成气制备低碳醇的铑基纳米催化剂的研制
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摘要
低碳醇是重要的化工中间体、优良的燃料以及汽油添加剂,其合成主要依赖于发酵法和乙烯水合法。从合成气出发直接制低碳醇,符合我国能源供应多样化的需求,对缓解我国原油短缺和确保我国能源安全具有重要的战略意义~([1,2])。本课题主要通过对碳管(CNTs)表面改性并针对如何利用氮杂原子与金属Rh之间的潜在强相互作用来有效调控制费托合成催化性能这一关键的科学问题,以及利用碳管表面的氮杂原子来锚定金属Rh以及加入助剂(Fe、Mn和Co)并提高其稳定性。目前合成出的催化剂中金属Rh在碳管上分布均匀,纳米粒子团聚较少,达到预期效果,部分表征手段以及催化活性还需进一步测试。
Nowadays the production of fuels and chemicals around the world largely depends on crude oil. Preparation of higher alcohols from Fischer-Tropsch synthesis is one of the key steps to make use of coal, natural gas, biomass and other non-oil-based resources.~([1,2]) A systematic study of the catalytic performance of the Fischer-Tropsch synthesis reaction to higher alcohols has been done on the carbon nanotubes(CNTs) supported rhodium catalysts by the surface modification of CNTs and how to make use of the strong interaction between nitrogen heteroatom and rhodium. And taking advantage of nitrogen heteroatom on the surface of the CNTs to anchor the metal Rh and its promoters(eg. Fe,Mn and Co) can improve its stability. At present, the synthesis of the catalysts distributes uniformly about Rh nano particles on the CNTs, the reunion of nano particles is not abvious, to achieve the desired effect, part of the characterization and catalytic activity still need further testing.
引文
[1]丁云杰.《煤制乙醇技术》化学工业出版社,2014.
    [2]王野,成康,张庆红.中国科学:化学,2012,42(4),363.

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