DOI: 10.1016/j.jcou.2018.04.027
Scopus记录号: 2-s2.0-85046546322
论文题名: CO2 capture and electro-conversion into valuable organic products: A batch and continuous study
作者: Dixit R.J. ; Majumder C.B.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 26 起始页码: 80
结束页码: 92
语种: 英语
英文关键词: CO2 electro conversion
; Cu based electro-catalyst
; Faradaic efficiency
; Polyvinyl alcohol chemical hydrogel based electrode binder
Scopus关键词: Batch reactors
; Binders
; Carbon dioxide
; Catalysts
; Cathodes
; Copper plating
; Cost effectiveness
; Efficiency
; Electrolysis
; Electrolytes
; Formic acid
; Fossil fuels
; Global warming
; Hydrogels
; Methane
; Methanol
; Polyvinyl alcohols
; Potassium hydroxide
; Precipitation (chemical)
; Reduction
; Stainless steel
; Coprecipitation method
; Electrochemical process
; Electrode binders
; Electrolysis process
; Electrolyte concentration
; Faradaic efficiencies
; Stainless steel cathodes
; Stainless steel plate
; Copper
英文摘要: CO2 gas is present in trace amount in the environment, but it is one of the major causes of global warming. It is necessary to reduce the CO2 concentration as it is increasing day by day due to excessive use of fossil fuels. This paper consists of the electrochemical process for CO2 reduction. Batch and multi-compartment continuous reactors were fabricated for CO2 capture and electro-reduction by using KOH as an electrolyte as well as a sorbent to obtain organic products such as formic acid, methane, and methanol. In the batch study, stainless steel cathode was tested while for continuous study two different Cu based cathodes were analyzed (Cu plates and Cu based electro-catalyst deposited on stainless steel plates). In all the electrolysis processes, stainless steel was used as the anode. Cost effective polyvinyl alcohol chemical hydrogel (PCH) was used as electrode binder. Electro-catalyst was prepared by co-precipitation method. Our study consists of optimization of key variables such as voltage, electrolysis time, electrolyte concentration and faradaic efficiency. For the batch study, formic acid was observed as main product with the faradaic efficiency (FE) of 41.18% at optimized parameters. For the continuous reactor, methanol and methane were the main products with the faradaic efficiency of 20.1% and 16.15% respectively for Cu plate cathodes whereas 36% and 10.29% respectively for electro-catalyst based cathodes. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111889
Appears in Collections: 气候减缓与适应
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作者单位: Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
Recommended Citation:
Dixit R.J.,Majumder C.B.. CO2 capture and electro-conversion into valuable organic products: A batch and continuous study[J]. Journal of CO2 Utilization,2018-01-01,26