Suppression of carbon formation in CH4–CO2 reforming by addition of Sr into bimetallic Ni–Co/γ-Al2O3 catalyst

被引：53

作者：

Al-Fatesh, Ahmed ^{[1
]}

机构：

[1] Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh

来源：

Journal of King Saud University - Engineering Sciences | 2015年 / 27卷 / 01期

关键词：

Bimetallic Ni–Co; CH[!sub]4[!/sub; CO[!sub]2[!/sub; Sr; γ-Al[!sub]2[!/sub]O[!sub]3[!/sub;

D O I：

10.1016/j.jksues.2013.09.006

中图分类号：

学科分类号：

摘要：

Bimetallic catalysts, containing 5 wt% Ni + 5 wt% Co supported on γ-Al2O3 combined with different amounts of Sr promoter ranging from 0 to 1 wt%, for dry reforming reaction were prepared by the impregnation method. The dry reforming reaction was carried out at atmospheric pressure using CO2/CH4/N2 feed ratio of 17/17/2, F/W = 60 mL/min gcat and reaction temperature range of 500–700 °C. The performance of the developed catalyst was evaluated by estimating the CH4 and CO2 conversions, and by performing a long run stability test. The fresh and spent catalysts were characterized by BET, TGA, TPD, TPR, and TPO. The bimetallic catalysts provided higher activity than the monometallic-catalysts. When the bimetallic was promoted with Sr, the activity decreased slightly however, the stability enhanced. The best stability, estimated by the deactivation factor, and less carbon deposition, measured by TGA, were obtained when 5Ni5CoSr0.75 catalyst was used. © 2013

引用

页码：101 / 107

页数：6

共 25 条

[1] Al-Fatish S.A., Development of catalysts for dry reforming of methane, (2010)
[2] Baker R.W., Lokhandwala K., Natural gas processing with membranes: an overview, Ind. Eng. Chem. Res., 47, pp. 2109-2121, (2008)
[3] Bradford M.C.J., Vannice M.A., CO2 reforming of CH4, Catal. Rev. Sci. Eng., 41, pp. 1-42, (1999)
[4] Choudhary V.R., Mamman A.S., Simultaneous oxidative conversion and CO2 or steam reforming of methane to syngas over CoO-NiO-MgO catalyst, J. Chem. Technol. Biot., 73, pp. 345-350, (1998)
[5] Foo S.Y., Cheng C.K., Nguyen T.H., Adesina A.A., Syngas production from CH4 dry reforming over Co–Ni/Al2O3 catalyst: Coupled reaction-deactivation kinetic analysis and the effect of O2 co-feeding on H2:CO ratio, Int. J. Hydrogen Energy, 36, pp. 17019-17026, (2011)
[6] Frontera P., Macario A., Aloise A., Crea F., Antonucci P.L., Nagy J.B., Frusteri F., Giordano G., Catalytic dry-reforming on Ni–zeolite supported catalyst, Catal. Today, 179, pp. 52-60, (2012)
[7] Hu Y.H., Ruckenstein E., Binary MgO-Based solid solution catalyst for methane conversion to syngas, 48, pp. 297-345, (2002)
[8] Jing Q., Lou H., Fei J., Hou Z., Zheng X., Syngas production from reforming of methane with CO2 and O2 over Ni/SrO–SiO2 catalysts in a fluidized bed reactor, Int. J. Hydrogen Energy, 29, pp. 1245-1251, (2004)
[9] Koh A.C.W., Chen L.W., Keeleong W., Johnson B.F.G., Khimyak T., Lin J.Y., Hydrogen or synthesis gas production via the partial oxidation of methane over supported nickel-cobalt catalysts, Int. J. Hydrogen Energy, 32, pp. 725-730, (2007)
[10] Koo K.Y., Roh H.S., Jung U.H., Seo D.J., Seo Y.S., Yoon W.L., Combined H2O and CO2 reforming of CH4 over nano-sized Ni/MgO-Al2O3 catalysts for synthesis gas production for gas to liquid (GTL): Effect of Mg/Al mixed ratio on coke formation, Catal. Today, 146, pp. 166-171, (2009)

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