An integrated air–POM syngas/dimethyl ether process from natural gas
作者： Meilin Jia , Wenzhao Li , Hengyong Xu , Shoufu Hou , Qingjie Ge
DOI: 10.1016/S0926-860X(02)00120-5
关键词: Partial oxidation 、 Methanol 、 Chemistry 、 Syngas 、 Methane 、 Inorganic chemistry 、 Dimethyl ether 、 Space velocity 、 Alkane 、 Catalysis
摘要: Abstract A Cu-Zn-Al methanol catalyst combined with HZSM-5 was used for dimethyl ether (DME) synthesis from a syngas containing nitrogen, which produced by air–partial oxidation of methane (air–POM). Air–POM occurred at 850 °C, 0.8 MPa, CH 4 /air/H 2 O/CO ratio 1/2.4/0.8/0.4 over Ni-based modified magnesia and lanthanum oxide 96% conversion constantly gave H /CO 2/1 during period 450 h. The obtained N -containing directly DME synthesis. About 90% CO per-pass conversion, 78% selectivity 70% yield could be achieved 450 h stability testing under the pressure 5.0 MPa, temperature 240 °C space velocity 1000 h −1 .
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J.-L. Li, X.-G. Zhang, T. Inui, Improvement in the catalyst activity for direct synthesis of dimethyl ether from synthesis gas through enhancing the dispersion of CuO/ZnO/γ-Al2O3 in hybrid catalysts Applied Catalysis A: General. ,vol. 147, pp. 23- 33 ,(1996) , 10.1016/S0926-860X(96)00208-6
X. D. Peng, A. W. Wang, B. A. Toseland, P. J. A. Tijm, Single-Step Syngas-to-Dimethyl Ether Processes for Optimal Productivity, Minimal Emissions, and Natural Gas-Derived Syngas Industrial & Engineering Chemistry Research. ,vol. 38, pp. 4381- 4388 ,(1999) , 10.1021/IE9901269
M.A. Pen˜a, J.P. Gómez, J.L.G. Fierro, New catalytic routes for syngas and hydrogen production Applied Catalysis A-general. ,vol. 144, pp. 7- 57 ,(1996) , 10.1016/0926-860X(96)00108-1
A. T. Ashcroft, A. K. Cheetham, J. S. Foord, M. L. H. Green, C. P. Grey, A. J. Murrell, P. D. F. Vernon, Selective oxidation of methane to synthesis gas using transition metal catalysts Nature. ,vol. 344, pp. 319- 321 ,(1990) , 10.1038/344319A0
D. A. Hickman, L. D. Schmidt, Production of Syngas by Direct Catalytic Oxidation of Methane Science. ,vol. 259, pp. 343- 346 ,(1993) , 10.1126/SCIENCE.259.5093.343
X.U. Hengyong, G.E. Qingjie, L.I. Wenzhao, H.O.U. Shoufu, Y.U. Chunying, J.I.A. Meilin, The synthesis of dimethyl ether from syngas obtained by catalytic partial oxidation of methane and air Studies in Surface Science and Catalysis. ,vol. 136, pp. 33- 38 ,(2001) , 10.1016/S0167-2991(01)80276-7
T. Shikada, Y. Ohno, T. Ogawa, M. Ono, M. Mizuguchi, K. Tomura, K. Fujimoto, Direct Synthesis of Dimethyl Ether form Synthesis Gas Studies in Surface Science and Catalysis. ,vol. 119, pp. 515- 520 ,(1998) , 10.1016/S0167-2991(98)80483-7
Alkeos C. Sofianos, Mike S. Scurrell, Conversion of synthesis gas to dimethyl ether over bifunctional catalytic systems Industrial & Engineering Chemistry Research. ,vol. 30, pp. 2372- 2378 ,(1991) , 10.1021/IE00059A002
V.R. Choudhary, B. Prabhakar, A.M. Rajput, Beneficial Effects of Noble Metal Addition to Ni/Al2O3 Catalyst for Oxidative Methane-to-Syngas Conversion Journal of Catalysis. ,vol. 157, pp. 752- 754 ,(1995) , 10.1006/JCAT.1995.1342
Yaying Ji, Wenzhao Li, Hengyong Xu, Yanxin Chen, Catalytic partial oxidation of methane to synthesis gas over Ni/γ-Al2O3 catalyst in a fluidized-bed Applied Catalysis A-general. ,vol. 213, pp. 25- 31 ,(2001) , 10.1016/S0926-860X(00)00887-5