Intrinsic Kinetics of Dimethyl Ether Synthesis from Syngas

摘要/Abstract

摘要： The intrinsic kinetics of dimethyl ether (DME) synthesis from syngas over a methanol synthesis catalyst mixed with methanol dehydration catalyst has been investigated in a tubular integral reactor at 3-7 MPa and 220-260oC. The three reactions including methanol synthesis from CO and H2, CO2 and H2, and methanol dehydration were chosen as the independent reactions. The L-H kinetic model was presented for dimethyl ether synthesis and the parameters of the model were obtained by using simplex method combined with genetic algorithm. The model is reliable according to statistical analysis and residual error analysis. The synergy effect of the reactions over the bifunctional catalyst was compared with the effect for methanol synthesis catalyst under the same conditions based on the model. The effects of syngas containing N2 on the reactions were also simulated.

关键词: dimethyl ether, synthesis, kinetics, syngas

Abstract: The intrinsic kinetics of dimethyl ether (DME) synthesis from syngas over a methanol synthesis catalyst mixed with methanol dehydration catalyst has been investigated in a tubular integral reactor at 3-7 MPa and 220-260oC. The three reactions including methanol synthesis from CO and H2, CO2 and H2, and methanol dehydration were chosen as the independent reactions. The L-H kinetic model was presented for dimethyl ether synthesis and the parameters of the model were obtained by using simplex method combined with genetic algorithm. The model is reliable according to statistical analysis and residual error analysis. The synergy effect of the reactions over the bifunctional catalyst was compared with the effect for methanol synthesis catalyst under the same conditions based on the model. The effects of syngas containing N2 on the reactions were also simulated.

Key words: dimethyl ether, synthesis, kinetics, syngas

Zhaoguang Nie;Hongwei Liu;Dianhua Liu;Weiyong Ying;Dingye Fang. Intrinsic Kinetics of Dimethyl Ether Synthesis from Syngas[J]. 能源化学(英文), 2005, 14 (1): 22-28.

Zhaoguang Nie;Hongwei Liu;Dianhua Liu;Weiyong Ying;Dingye Fang. Intrinsic Kinetics of Dimethyl Ether Synthesis from Syngas[J]. Journal of Energy Chemistry, 2005, 14 (1): 22-28.

[1]	Karam Jabbour. Tuning combined steam and dry reforming of methane for "metgas" production: A thermodynamic approach and state-of-the-art catalysts[J]. 能源化学(英文版), 2020, 48(9): 54-91.
[2]	Dong Chen, Jingwei Shen, Xue Li, Shun-an Cao, Ting Li, Wei Luo, fei Xu. Ni_0.85Se hexagonal nanosheets as an advanced conversion cathode for Mg secondary batteries[J]. 能源化学(英文版), 2020, 48(9): 226-232.
[3]	Ziqun Wang, Longfeng Li, Mingzhu Liu, Tifang Miao, Xiangju Ye, Sugang Meng, Shifu Chen, Xianliang Fu. A new phosphidation route for the synthesis of NiP_x and their cocatalytic performances for photocatalytic hydrogen evolution over g-C₃N₄[J]. 能源化学(英文版), 2020, 48(9): 241-249.
[4]	You Li, Xiao Zhang, Guihua Liu, Ashton Gerhardt, Katelyn Evans, Aizhong Jia, Zisheng Zhang. Oxygen-deficient titanium dioxide supported cobalt nano-dots as efficient cathode material for lithium-sulfur batteries[J]. 能源化学(英文版), 2020, 48(9): 390-397.
[5]	Teng Lv, Wei Weng, Jing Zhou,dong Gu, Wei Xiao. Effects of K and Mn promoters over Fe₂O₃ on Fischer-Tropsch synthesis[J]. 能源化学(英文版), 2020, 47(8): 118-127.
[6]	Jianing Liang, Yun Lu, Jie Wang, Xupo Liu, Ke Chen, Weihao Ji, Ye Zhu,deli Wang. Well-ordered layered LiNi_0.8Co_0.1Mn_0.1O₂ submicron sphere with fast electrochemical kinetics for cathodic lithium storage[J]. 能源化学(英文版), 2020, 47(8): 188-195.
[7]	Junbiao Wu, Yu Wang, Yaopeng Zhang, Hao Meng, Yan Xu, Yide Han, Zhuopeng Wang, Yanfeng Dong, Xia Zhang. Highly safe and ionothermal synthesis of Ti₃C₂ MXene with expanded interlayer spacing for enhanced lithium storage[J]. 能源化学(英文版), 2020, 47(8): 203-209.
[8]	Xian Wang, Zelin Wang, Ya Bai, Ling Tan, Yanqi Xu, Xiaojie Hao, Jikang Wang, Abdul Hanif Mahadi, Yufei Zhao, Lirong Zheng, Yu-Fei Song. Tuning the selectivity of photoreduction of CO₂ to syngas over Pd/layered double hydroxide nanosheets under visible light up to 600 nm[J]. 能源化学(英文版), 2020, 46(7): 1-7.
[9]	Chengxiong Dang, Shijie Wu, Guangxing Yang, Yonghai Cao, Hongjuan Wang, Feng Peng, Hao Yu. Syngas production by dry reforming of the mixture of glycerol and ethanol with CaCO₃[J]. 能源化学(英文版), 2020, 43(4): 90-97.
[10]	Ya-Li Song, Zi-Chang Wang, Yong-De Yan, Mi-Lin Zhang, Gui-Ling Wang, Tai-Qi Yin, Yun Xue, Fan Gao, Min Qiu. Molten salt synthesis and supercapacitor properties of oxygen-vacancy LaMnO_3-δ[J]. 能源化学(英文版), 2020, 43(4): 173-181.
[11]	Jiarong Yang, Wei Weng, Wei Xiao. Electrochemical synthesis of ammonia in molten salts[J]. 能源化学(英文版), 2020, 43(4): 195-207.
[12]	Sanzhao Song, Hongliang Bao, Xiao Lin, Xian-Long Du, Jing Zhou, Linjuan Zhang, Ning Chen, Jun Hu, Jian-Qiang Wang. Molten salt-assisted synthesis of bulk CoOOH as a water oxidation catalyst[J]. 能源化学(英文版), 2020, 42(3): 5-10.
[13]	Fanfei Sun, Ruoou Yang, Zhaoming Xia, Yuqi Yang, Ziang Zhao, Songqi Gu, Dongshuang Wu, Yunjie Ding, Zheng Jiang. Effects of cobalt carbide on Fischer-Tropsch synthesis with MnO supported Co-based catalysts[J]. 能源化学(英文版), 2020, 42(3): 227-232.
[14]	Raúl Mateos, Adrián Escapa, María Isabel San-Martín, Heleen De Wever, Ana Sotres, Deepak Pant. Long-term open circuit microbial electrosynthesis system promotes methanogenesis[J]. 能源化学(英文版), 2020, 41(2): 3-6.
[15]	Srirat Chuayboon, Stéphane Abanades, Sylvain Rodat. Solar chemical looping reforming of methane combined with isothermal H₂O/CO₂ splitting using ceria oxygen carrier for syngas production[J]. 能源化学(英文版), 2020, 41(2): 60-72.