气候变化领域集成服务门户(CCPortal): Assessing the viability of K-Mo2C for reverse water-gas shift scale-up: Molecular to laboratory to pilot scale

CCPortal

DOI	10.1039/d0ee01457e
	Assessing the viability of K-Mo2C for reverse water-gas shift scale-up: Molecular to laboratory to pilot scale
	Juneau M.; Vonglis M.; Hartvigsen J.; Frost L.; Bayerl D.; Dixit M.; Mpourmpakis G.; Morse J.R.; Baldwin J.W.; Willauer H.D.; Porosoff M.D.
发表日期	2020
ISSN	17545692
起始页码	2524
结束页码	2539
卷号	13 期号:8
英文摘要	Conversion of CO2 to value-added chemicals and fuels is a potentially valuable route for renewable energy storage and a future CO2-neutral economy. The first step is CO2 conversion to CO via the reverse water-gas shift (RWGS) reaction. Effluent CO can then be hydrogenated to chemicals and fuels via Fischer-Tropsch (FT) synthesis over a tandem catalyst or within a second reactor. To implement this process on an industrial scale, low-cost, scalable and highly-selective catalysts are required, prompting investigations into materials that meet these design constraints. Potassium-promoted molybdenum carbide supported on gamma alumina (K-Mo2C/?-Al2O3) has recently been shown to be a highly active and selective RWGS catalyst in the laboratory, prompting us to investigate the viability of K-Mo2C/?-Al2O3 for scale-up. In this report, laboratory-scale (~100 mg catalyst) reactor studies are extended to the pilot-scale (~1 kg catalyst), and viability for scale-up is tested further with density functional theory (DFT) calculations, detailed characterization and reactor experiments under a range of temperatures (300-600 °C) and flow conditions. The pilot-scale experiments illustrate K-Mo2C/?-Al2O3 is a highly active and selective catalyst (44% CO2 conversion, 98%+ CO selectivity at GHSV = 1.7 L kg-1 s-1 and T = 450 °C) that exhibits no signs of deactivation for over 10 days on stream. Together, experiments across the molecular, laboratory and pilot scales demonstrate that K-Mo2C/?-Al2O3 is an economically-viable RWGS catalyst with promising future applications in the US Naval Research Laboratory's seawater-to-fuel process, downstream methanol synthesis and FT. © 2020 The Royal Society of Chemistry.
英文关键词	Alumina; Aluminum oxide; Carbides; Carbon dioxide; Catalyst selectivity; Chemical shift; Costs; Density functional theory; Design for testability; Economics; Effluents; Energy storage; Fischer-Tropsch synthesis; Fuel storage; Hydrogen fuels; Molybdenum compounds; Potassium compounds; Research laboratories; Economically viable; Future applications; Pilot-scale experiments; Renewable energy storages; Reverse water gas shift; Selective catalysts; US Naval Research Laboratory; Value-added chemicals; Water gas shift; alternative energy; aluminum oxide; catalyst; economic analysis; energy storage; methanol; molecular analysis; molybdenum; potassium
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189594
作者单位	Department of Chemical Engineering, University of Rochester, Rochester, NY 14627, United States; OxEon Energy, LLC, North Salt Lake, UT 84054, United States; Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15261, United States; Materials Science and Technology Division, Naval Research Laboratory, Washington, DC 20375, United States; Acoustics Division, Naval Research Laboratory, Washington, DC 20375, United States
推荐引用方式 GB/T 7714	Juneau M.,Vonglis M.,Hartvigsen J.,et al. Assessing the viability of K-Mo2C for reverse water-gas shift scale-up: Molecular to laboratory to pilot scale[J],2020,13(8).
APA	Juneau M..,Vonglis M..,Hartvigsen J..,Frost L..,Bayerl D..,...&Porosoff M.D..(2020).Assessing the viability of K-Mo2C for reverse water-gas shift scale-up: Molecular to laboratory to pilot scale.Energy & Environmental Science,13(8).
MLA	Juneau M.,et al."Assessing the viability of K-Mo2C for reverse water-gas shift scale-up: Molecular to laboratory to pilot scale".Energy & Environmental Science 13.8(2020).