Ultra-large-scale Synthesis of Fe3O4 Nanoparticles and Their Application for Direct Coal Liquefaction

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• 作者：Yizhao Li ; Fengyun Ma ; Xintai Su ; Longjiao Shi ; Beibei Pan ; Zhiqiang Sun ; Yanglong Hou
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：April 23, 2014
• 年：2014
• 卷：53
• 期：16
• 页码：6718-6722
• 全文大小：279K
• 年卷期：v.53,no.16(April 23, 2014)
• ISSN：1520-5045

文摘

Ultra-large-scale synthesis of iron oxide nanoparticles (875 g) has been achieved in a single reaction via a facile solution-based dehydration process. The obtained nanoparticles capped with hydrophobic oleic acid ligands are magnetite with the average size of 5 nm. The synthesized samples exhibit a higher catalytic activity toward the direct coal liquefaction (DCL) than the commercial Fe₃O₄ powders. The conversion, oil yield, and liquefaction degree with the synthesized Fe₃O₄ nanoparticles are 89.6, 65.1, and 77.3%, respectively. The excellent catalytic performance of the synthesized Fe₃O₄ nanoparticles can be attributed to their extremely small size and high dispersity. This facile approach to prepare highly active nanocatalyst for the DCL will be applicable for future industrial processes.