| Issue |
Korean Journal of Chemical Engineering,
Vol.37, No.2, 209-215, 2020
Vol.37, No.2, 209-215, 2020
Efficient removal of the carbon deposits formed during the mixed methane reforming over Ni/Al2O3
This work investigates the process of elimination of carbon deposits formed during the mixed reforming of methane mixture. The mixed reforming of methane to synthesis gas was studied over Ni/Al2O3 catalyst in the 650-750 °C. The amount of carbon deposit on the surface of catalyst varied from 2.8 to 5.9%, depending on the reaction temperature. The reactivity of carbon species was evaluated in the oxygen, hydrogen, carbon dioxide, and water mixtures. The obtained results revealed the presence of highly active carbon form (etched at a temperature below 200 °C) and inactive form (gasification at a temperature above 500 °C). The SEM and Raman analyses confirmed the presence of carbon in the form of filaments. Among all investigated gasification agents, water vapor was found to be the most efficient in removing the carbon deposit due to better adsorption of water on the surface of aluminum oxide. The overall mechanism of mixed methane reforming along with carbon gasification was shown.
[References]
- Daza CE, Kiennemann A, Moreno S, Molina R, Appl. Catal. A: Gen., 364(1-2), 65, 2009
- Daza C, Gallego J, Mondragon F, Moreno S, Molina R, Fuel, 83, 592, 2010
- Schulz PG, Gonzalez MG, Quincoces CE, Gigola CE, Ind. Eng. Chem. Res., 44(24), 9020, 2005
- Bartholomew CH, Appl. Catal. A: Gen., 212, 17, 2001
- Rostrup-Nielsen JR, Catalysis, Science and Technology Springer, New York (1984).
- Solh E, Dry Reforming of Methane in a Fast Fluidized, Ph.D. Thesis, London: University of Western Ontario (2002).
- Wu H, Chang Y, Wu J, Lin J, Lin I, Chen C, Catal. Sci. Technol., 5, 4154, 2015
- Rahman M, Croiset E, Hudgins R, Top. Catal., 37, 137, 2006
- Rebel S, Guedes A, Szefczyk M, Pereira A, Phys. Chem. Chem. Phys., 18, 12784, 2016
- Yang HX, Song SQ, Rao RC, Wang XZ, Yu Q, Zhang AM, J. Mol. Catal. A-Chem., 323(1-2), 33, 2010
- Zhao X, Lu Y, Liao W, J. Fuel. Chem. Technol., 43, 581, 2015
- Yamasaki M, Komori M, Akiyama E, Habazaki H, Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process., 267, 220, 1999
- McCarty J, Hou P, Sheridan D, Wise H, SRI Int., 202, 253, 1983
- Saboktakin M, Tabatabaie R, Maharramov A, Ramazanov M, Synth. Commun., 41, 1455, 2011
- McCarty J, Hou P, Sheridan D, Wise H, Am. Chem. Soc, 202, 253, 1983
- Tamai Y, Watanabe H, Tomita A, Carbon, 15, 103, 1997
- Trimm D, Chem. Eng. Process., 18, 137, 1984
- Maier L, Schadel B, Delgado KH, Tischer S, Deutschmann O, Top. Catal., 54, 845, 2011
[Cited By]
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.