Graphene-supported Iron Phosphide Nanoparticles for Fischer-Tropsch Synthesis

doi:10.6023/A13060591

Acta Chimica Sinica ›› 2013, Vol. 71 ›› Issue (10): 1365-1368.DOI: 10.6023/A13060591 Previous Articles Next Articles

Communication

磷化铁/石墨烯纳米复合物的制备及其在F-T合成反应中的应用

杨敬贺^a, 赵博^b, 赵华博^b, 陆安慧^a, 马丁^b

a 大连理工大学化工与环境生命学部化工学院大连 116024;
b 北京大学化学与分子工程学院北京 100871

投稿日期:2013-06-04 发布日期:2013-07-19
通讯作者: 马丁,E-mail:dma@pku.edu.cn;Tel.:0086-010-62758603;Fax:0086-010-62758603 E-mail:dma@pku.edu.cn
基金资助:
项目受国家自然科学基金(Nos. 21176221, 21273224)和973项目基金(2011CB201402, 2013CB933100)资助.

Graphene-supported Iron Phosphide Nanoparticles for Fischer-Tropsch Synthesis

Yang Jinghe^a, Zhao Bo^b, Zhao Huabo^b, Lu Anhui^a, Ma Ding^b

a Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024;
b Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871

Received:2013-06-04 Published:2013-07-19
Supported by:
Project supported by the Natural Science Foundation of China (Nos. 21176221, 21273224) and 973 Project (Nos. 2011CB201402, 2013CB933100).

1. Graphene-supported Iron Phosphide Nanoparticles for Fischer-Tropsch Synthesis.PDF(499KB)

Abstract

Graphene (G) is a huge open π-electron system with a unique electronic structure, which ignites diverse applications such as electronics, photovoltaics, batteries, supercapacitors and so on. Because of the larger surface area, G can be used as the catalyst or the advantageous carrier for the catalytic active components for hydrogenation, oxidation and carbon-carbon coupling reactions. In the present study, we exploited G as a support for iron phosphide nanoparticles (FeP/G) by calcination the precursor iron phosphate-graphene oxide nanocomposite (FePO/GO) under hydrogen atmosphere. In the same method, we also prepared the control pure iron phosphide (FeP) by H₂ calcination the precursor iron phosphate (FePO). The FePO of FePO/GO existed in the form of porous spherical and the particle size ranges from 100 nm to 300 nm. After transforming into FeP, the average particle size of FeP is about 10 nm while the particles were uniformly dispersed on the G and no obvious aggregation was observed. While, not only the pure FePO but also the pure FeP was powerful aggregation. That meant GO and G could regulate the microstructure and morphology of FePO and FeP, respectively. The as-prepared products were investigated by X-ray diffraction, transmission electron microscopy, field emission environment scanning electron microscopy and XPS spectroscopy. XPS spectra showed that the electron binding energy of Fe in FeP/G increased slightly. The Fischer-Tropsch Synthesis (FTS) reaction has been selected as model reaction for evaluating FeP/G. When the reaction conditions were 15 mg catalyst (reduced in H₂at 623 K for 2 h prior to FTS reaction), 2 MPa syngas (CO:H₂:Ar=32:63:5), 5 mL·min^-1, 593 K, the remarkable catalytic discrepancies in FTS activity and product selectivity were observed. The activity toward the conversion of CO on FeP/G was about 70 times that of FeP. The result show that FeP/G catalysts are potential good catalysts for FTS.

Key words: graphene, iron phosphate, iron phosphide, Fischer-Tropsch synthesis, graphene oxide

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Yang Jinghe, Zhao Bo, Zhao Huabo, Lu Anhui, Ma Ding. Graphene-supported Iron Phosphide Nanoparticles for Fischer-Tropsch Synthesis[J]. Acta Chimica Sinica, 2013, 71(10): 1365-1368.

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磷化铁/石墨烯纳米复合物的制备及其在F-T合成反应中的应用

Graphene-supported Iron Phosphide Nanoparticles for Fischer-Tropsch Synthesis

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