Iron-silica nanocomposites as a catalyst for the selective conversion of syngas to light olefins

WEI Jian; MA Xian-gang; FANG Chuan-yan; GE Qing-jie; XU Heng-yong

Volume 42 Issue 07

Jul. 2014

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(07): 827-832

WEI Jian, MA Xian-gang, FANG Chuan-yan, GE Qing-jie, XU Heng-yong. Iron-silica nanocomposites as a catalyst for the selective conversion of syngas to light olefins[J]. Journal of Fuel Chemistry and Technology, 2014, 42(07): 827-832.

Citation:

WEI Jian, MA Xian-gang, FANG Chuan-yan, GE Qing-jie, XU Heng-yong. Iron-silica nanocomposites as a catalyst for the selective conversion of syngas to light olefins[J]. Journal of Fuel Chemistry and Technology, 2014, 42(07): 827-832.

Citation:

PDF( 3227 KB)

Iron-silica nanocomposites as a catalyst for the selective conversion of syngas to light olefins

1.
Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2014-01-22
Rev Recd Date: 2014-03-12
Publish Date: 2014-07-30

Abstract

Abstract

A series of Fe/SiO₂ catalysts were prepared by one-pot synthesis and conventional co-precipitation methods; they were characterized by N₂ physisorption, X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and temperature-programmed reduction. The performances of the Fe/SiO₂ catalysts in Fischer-Tropsch synthesis (FTS) were evaluated in a fixed-bed reactor for the production of light olefins from syngas. The results showed that in the Fe/SiO₂ catalyst prepared by one-pot synthesis method, the iron oxide is present as iron-silica nanocomposite in the form of Fe₃O₄ (magnetite). Compared with the catalyst prepared by conventional co-precipitation method, the magnetite-silica nanocomposite by one-pot synthesis exhibits a more uniform spherical-like morphology, narrower size distribution (30 nm in average) and better reducibility. In FTS, the Fe/SiO₂ catalyst prepared by one-pot synthesis method exhibits higher activity and selectivity to light olefin as well as lower selectivity to methane and better stability.
- syngas,
- Fischer-Tropsch synthesis,
- light olefins,
- magnetite,
- nanocomposites

FullText(HTML)

References(19)

References

杨学萍, 董丽. 合成气直接制低碳烯烃技术进展与经济性分析[J]. 化工进展, 2012, 31(8): 1726-1731. (YANG Xue-ping, DONG Li. Technical progress and economical ananysis on the direct production of light olefins from syngas[J]. Chemical Industry and Engineering Progress, 2012, 31(8): 1726-1731.)

TORRES GALVIS H M, DE JONG K P. Catalysts for production of lower olefins from synthesis gas[J]. ACS Catal, 2013, 3(9): 2130-2149.

DE SMIT E, WECKHUYSEN B M. The renaissance of iron-based Fischer-Tropsch synthesis: On the multifaceted catalyst deactivation behaviour[J]. Chem Soc Rev, 2008, 37(12): 2758-2781.

ABELLO S, MONTANE D. Exploring iron-based multifunctional catalysts for Fischer-Tropsch synthesis[J]. ChemSusChem, 2011, 4(11): 1538-1556.

MCDONALD M A, STORM D, BOUDART M. Hydrocarbon synthesis from CO-H₂ on supported iron: Effect of particle size and interstitials[J]. J Catal, 1986, 102(2): 386-400.

BOUDART M, MCDONALD M A. Structure sensitivity of hydrocarbon synthesis from carbon monoxide and hydrogen[J]. J Phys Chem, 1984, 88(11): 2185-2195.

DEN BREEJEN J P, SIETSMA J R A, FRIEDRICH H, BITTER J H, DE JONG K P. Design of supported cobalt catalysts with maximum activity for the Fischer-Tropsch synthesis[J]. J Catal, 2010, 270(1): 146-152.

马利海, 张建利, 范素兵, 赵天生. 水热法Fe-Mn催化剂制备及其合成气制低碳烯烃催化活性[J]. 燃料化学学报, 2013, 41(11): 1356-1360. (MA Li-hai, ZHANG Jian-li, FAN Su-bing, ZHAO Tian-sheng. Preparation of Fe-Mn catalyst by hydrothermal methodand its catalytic activity for the synthesis of light olefins from CO hydrogenation[J]. Journal of Fuel Chemistry and Technology, 2013, 41(11): 1356-1360.)

KANG S H, BAE J W, SAI PRASAD P S, PARK S J, WOO K J, JUN K W. Effect of preparation method of Fe-based Fischer-Tropsch catalyst on their light olefin production[J]. Catal Lett, 2009, 130(3/4): 630-636.

LAURENT S, FORGE D, PORT M, ROCH A, ROBIC C, VANDER ELST L, MULLER R N. Magnetic iron oxide nanoparticles: Synthesis, stabilization, vectorization, physicochemical characterizations, and biological applications[J]. Chem Rev, 2008, 108(6): 2064-2110.

GOLE A, STONE J W, GEMMILL W R, ZUR LOYE H C, MURPHY C J. Iron oxide coated gold nanorods: Synthesis, characterization, and magnetic manipulation[J]. Langmuir, 2008, 24(12): 6232-6237.

XIONG Y, YE J, GU X, CHEN Q W. Synthesis and assembly of magnetite nanocubes into flux-closure rings[J]. J Phys Chem C, 2007, 111(19): 6998-7003.

RODULFO-BAECHLER S M, GONZÁ LEZ-CORTÉS S L, OROZCO J, SAGREDO V, FONTAL B, MORA A J, DELGADO G. Characterization of modified iron catalysts by X-ray diffraction, infrared spectroscopy, magnetic susceptibility and thermogravimetric analysis[J]. Mater Lett, 2004, 58(20): 2447-2450.

ZHANG C H, WAN H J, YANG Y, XIANG H W, LI Y W. Study on the iron-silica interaction of a co-precipitated Fe/SiO₂ Fischer-Tropsch synthesis catalyst[J]. Catal Commun, 2006, 7(9):733-738.

SUO H Y, WANG S G, ZHANG C H, XU J, WU B S, YANG Y, XIANG H W, LI Y W. Chemical and structural effects of silica in iron-based Fischer-Tropsch synthesis catalysts[J]. J Catal, 2012, 286: 111-123.

JOZWIAK W K, KACZMAREK E, MANIECKI T P, IGNACZAK W, MANIUKIEWICZ W. Reduction behavior of iron oxides in hydrogen and carbon monoxide atmospheres[J]. Appl Catal A: Gen, 2007, 326(1): 17-27.

REDL F X, BLACK C T, PAPAEFTHYMIOU G C, SANDSTROM R L, YIN M, ZENG H, MURRAY C B, O'BRIEN S P. Magnetic, electronic, and structural characterization of nonstoichiometric iron oxides at the nanoscale[J]. J Am Chem Soc, 2004, 126(44): 14583-14599.

WAN H J, WU B S, ZHANG C H, XIANG H W, LI Y W. Promotional effects of Cu and K on precipitated iron-based catalysts for Fischer-Tropsch synthesis[J]. J Mol Catal A: Chem, 2008, 283(1/2): 33-42.

沈菊李, 刘化章, 李小年, 胡樟能, 国海光, 张天明. 费-托合成Fe_1-_xO基熔铁催化剂的研究[J]. 催化学报, 2004, 25(10): 785-788. (SHEN Ju-li, LIU Hua-zhang, LI Xiao-nian, HU Zhang-neng, GUO Hai-guang, ZHANG Tian-ming. Study on Fe_1-_xO-based fused iron catalyst for Fischer-Tropsch synthesis[J]. Chinese Journal of Catalysis, 2004, 25(10): 785-788.)

Relative Articles

Supplements(0)

Cited By

Proportional views