A novel low-thermal-budget approach for the co-production of ethylene and hydrogen via the electrochemical non-oxidative deprotonation of ethane
Abstract
Here, the oversupply of ethane, a major component of natural gas liquids, has stimulated the wide applications of ethylene since the shale gas revolution. However, ethylene production is energy-intensive and represents the most energy-consuming single process in the chemical industry. In this communication, we report, for the first time, a novel low-thermal-budget process for the co-production of ethylene and pure hydrogen using a proton-conducting electrochemical deprotonation cell. At a constant current density of 1 A cm–2, corresponding to a hydrogen production rate of 0.448 mol cm–2 per day, and 400 °C, a close to 100% ethylene selectivity was achieved under an electrochemical overpotential of 140 mV. Compared to an industrial ethane steam cracker, the electrochemical deprotonation process can achieve a 65% saving in process energy and reduce the carbon footprint by as much as 72% or even more if renewable electricity and heat are used. If the heating value of produced hydrogen is taken into account, the electrochemical deprotonation process actually has a net gain in processing energy. The electrochemical deprotonation process at reduced temperatures in the present study provides a disruptive approach for petrochemical manufacturing, shifting the paradigm from thermal chemical practice to a clean energy regime.
- Authors:
-
[1];
[1];
[1];
[2];
[1]
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Georgia Inst. of Technology, Atlanta, GA (United States)
- Publication Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1481737
- Alternate Identifier(s):
- OSTI ID: 1434113
- Report Number(s):
- INL/JOU-17-43375-Rev000
Journal ID: ISSN 1754-5692; EESNBY
- Grant/Contract Number:
- AC07-05ID14517
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Energy & Environmental Science
- Additional Journal Information:
- Journal Volume: 11; Journal Issue: 7; Journal ID: ISSN 1754-5692
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; 04 OIL SHALES AND TAR SANDS; Ethylene production; electrochemical deprotonation; low-thermal-budget; carbon footprint; proton conductors
Citation Formats
Ding, Dong, Zhang, Yunya, Wu, Wei, Chen, Dongchang, Liu, Meilin, and He, Ting. A novel low-thermal-budget approach for the co-production of ethylene and hydrogen via the electrochemical non-oxidative deprotonation of ethane. United States: N. p., 2018.
Web. doi:10.1039/C8EE00645H.
Ding, Dong, Zhang, Yunya, Wu, Wei, Chen, Dongchang, Liu, Meilin, & He, Ting. A novel low-thermal-budget approach for the co-production of ethylene and hydrogen via the electrochemical non-oxidative deprotonation of ethane. United States. https://doi.org/10.1039/C8EE00645H
Ding, Dong, Zhang, Yunya, Wu, Wei, Chen, Dongchang, Liu, Meilin, and He, Ting. Wed .
"A novel low-thermal-budget approach for the co-production of ethylene and hydrogen via the electrochemical non-oxidative deprotonation of ethane". United States. https://doi.org/10.1039/C8EE00645H. https://www.osti.gov/servlets/purl/1481737.
@article{osti_1481737,
title = {A novel low-thermal-budget approach for the co-production of ethylene and hydrogen via the electrochemical non-oxidative deprotonation of ethane},
author = {Ding, Dong and Zhang, Yunya and Wu, Wei and Chen, Dongchang and Liu, Meilin and He, Ting},
abstractNote = {Here, the oversupply of ethane, a major component of natural gas liquids, has stimulated the wide applications of ethylene since the shale gas revolution. However, ethylene production is energy-intensive and represents the most energy-consuming single process in the chemical industry. In this communication, we report, for the first time, a novel low-thermal-budget process for the co-production of ethylene and pure hydrogen using a proton-conducting electrochemical deprotonation cell. At a constant current density of 1 A cm–2, corresponding to a hydrogen production rate of 0.448 mol cm–2 per day, and 400 °C, a close to 100% ethylene selectivity was achieved under an electrochemical overpotential of 140 mV. Compared to an industrial ethane steam cracker, the electrochemical deprotonation process can achieve a 65% saving in process energy and reduce the carbon footprint by as much as 72% or even more if renewable electricity and heat are used. If the heating value of produced hydrogen is taken into account, the electrochemical deprotonation process actually has a net gain in processing energy. The electrochemical deprotonation process at reduced temperatures in the present study provides a disruptive approach for petrochemical manufacturing, shifting the paradigm from thermal chemical practice to a clean energy regime.},
doi = {10.1039/C8EE00645H},
journal = {Energy & Environmental Science},
number = 7,
volume = 11,
place = {United States},
year = {Wed Mar 28 00:00:00 EDT 2018},
month = {Wed Mar 28 00:00:00 EDT 2018}
}
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Figures / Tables:
Figure 1: Non-oxidative deprotonation process (NDP) and cell illustration. (a) Schematic of the co-production of ethylene and hydrogen via an NDP process of ethane in a proton conducting electrochemical cell. Ethane was fed into in the anode and deprotonated to produce ethylene and protons, which transferred through the electrolyte membranemore »
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Works referencing / citing this record:
Interfacial Enhancement by γ‐Al 2 O 3 of Electrochemical Oxidative Dehydrogenation of Ethane to Ethylene in Solid Oxide Electrolysis Cells
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