| Catalytic kinetics of dimethyl ether one-step synthesis over CeO_2–CaO–Pd/HZSM-5 catalyst in sulfur-containing syngas process |
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| 作者姓名： | Ruizhi Chu Wenxin Hou Xianliang Meng Tingting Xu Zhenyong Miao Guoguang Wu Lei Bai |
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| 作者单位： | 1.School of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China;2.High-Tech Research Institute of China University of Mining and Technology, Lianyungang 222000, China;3.Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown 26506, USA |
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| 基金项目： | Supported by the National Natural Science Foundation of China (51204179, 51204182, 51674256) and The Natural Science Foundation of Jiangsu Province, China (BK20141242). |
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| 摘 要： | CeO_2–CaO–Pd/HZSM-5 catalyst was prepared for the dimethyl ether(DME) one-step synthesis in a continuous fixed-bed micro-reactor from the sulfur-containing syngas. The catalytic stability over hybrid catalyst of CeO_2–CaO–Pd/HZSM-5 was investigated to ensure that the kinetics experimental results were not significantly influenced by induction period and catalytic deactivation. A large number of kinetic data points(40 sets) were obtained over a range of temperature(240–300 °C), pressure(3–4 MPa), gas hourly space velocity(GHSV)(2000–3000 L·kg~(-1)·h~(-1)) and H_2/CO mole ratio(2–3). Kinetic model for the methanol synthesis reaction and the dehydration of methanol were obtained separately according to reaction mechanism and Langmuir–Hinshelwood mechanism. Regression parameters were investigated by the method combining the simplex method and Runge–Kutta method. The model calculations were in appropriate accordance with the experimental data.
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| 关 键 词： | CeO2-CaO-Pd/HZSM-5 catalyst DME One-step synthesis Catalytic kinetics Sulfur-containing syngas |
| 收稿时间： | 2016-08-01 |
Catalytic kinetics of dimethyl ether one-step synthesis over CeO2-CaO-Pd/HZSM-5 catalyst in sulfur-containing syngas process |
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| Ruizhi Chu,Wenxin Hou,Xianliang Meng,Tingting Xu,Zhenyong Miao,Guoguang Wu,Lei Bai.Catalytic kinetics of dimethyl ether one-step synthesis over CeO2-CaO-Pd/HZSM-5 catalyst in sulfur-containing syngas process[J].Chinese Journal of Chemical Engineering,2016,24(12):1735-1741. |
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| Authors: | Ruizhi Chu Wenxin Hou Xianliang Meng Tingting Xu Zhenyong Miao Guoguang Wu Lei Bai |
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| Affiliation: | 1.School of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China;2.High-Tech Research Institute of China University of Mining and Technology, Lianyungang 222000, China;3.Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown 26506, USA |
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| Abstract: | CeO2-CaO-Pd/HZSM-5 catalyst was prepared for the dimethyl ether (DME) one-step synthesis in a continuous fixed-bed micro-reactor from the sulfur-containing syngas. The catalytic stability over hybrid catalyst of CeO2-CaO-Pd/HZSM-5 was investigated to ensure that the kinetics experimental results were not significantly influenced by induction period and catalytic deactivation. A large number of kinetic data points (40 sets) were obtained over a range of temperature (240-300℃), pressure (3-4 MPa), gas hourly space velocity (GHSV) (2000-3000 L·kg-1·h-1) and H2/CO mole ratio (2-3). Kinetic model for the methanol synthesis reaction and the dehydration of methanol were obtained separately according to reaction mechanism and Langmuir-Hinshelwood mechanism. Regression parameters were investigated by the method combining the simplex method and Runge-Kutta method. The model calculations were in appropriate accordance with the experimental data. |
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| Keywords: | CeO2-CaO-Pd/HZSM-5 catalyst DME One-step synthesis Catalytic kinetics Sulfur-containing syngas |
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