Article
Thermodynamics
Rod Burgass, Antonin Chapoy
Summary: This paper presents experimental equipment, methods and new results for the water content of carbon dioxide and impure carbon dioxide in equilibrium with hydrates. The experimental data are compared with predictions from two thermodynamic models, showing that the hydrate-forming conditions are modelled by the solid solution theory of van der Waals and Platteeuw.
FLUID PHASE EQUILIBRIA
(2023)
Article
Engineering, Marine
Vladimir Pelic, Ozren Bukovac, Radoslav Radonja, Nastia Degiuli
Summary: Modern marine propulsion systems need to be reliable, energy efficient, environmentally friendly, and economical. Slow steaming is an effective way to reduce fuel consumption and CO2 emissions, particularly for large container ships with a design speed of over 20 knots. This paper analyzes the effects of slow steaming on a container ship with diesel-engine propulsion and investigates different propulsion systems using low-speed and medium-speed marine diesel engines. The analysis concludes that slow steaming can effectively reduce fuel consumption and emissions, but the choice of propulsion system depends on maritime market conditions.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Thermodynamics
Mark R. Fleming, Benjamin M. Adams, Jonathan D. Ogland-Hand, Jeffrey M. Bielicki, Thomas H. Kuehn, Martin O. Saar
Summary: CPG-F facility can generate more power than CPG power plant, but with less daily energy production. The capital cost of a CPG-F facility designed for varying durations of energy storage is 70% higher than a CPG power plant, but costs only 4% to 27% more than most CPG-F facilities designed for a specific duration, producing significantly more power than a CPG power plant.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Anastasis Giannousakis, Jerome Hilaire, Gregory F. Nemet, Gunnar Luderer, Robert C. Pietzcker, Renato Rodrigues, Lavinia Baumstark, Elmar Kriegler
Summary: This study evaluates the impact of energy supply costs and CDR availability on mitigation using a sensitivity analysis with the REMIND model. It highlights the importance of renewable energy deployment in climate policy and the increasing sensitivity of economic indicators to costs with stricter policies.
Article
Chemistry, Physical
Christopher James Fetrow, Cameron Carugati, Xiao-Dong Zhou, Shuya Wei
Summary: This review provides an overview of the fundamental electrochemistry and mechanisms of metal-CO2 batteries, including material selection, design considerations, electrochemical charge and discharge mechanisms, and catalyzed behaviors. Understanding the underlying electrochemistry of metal-CO2 batteries can lead to the development of battery technologies applicable to a wide range of carbon capture and energy storage applications.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ali Hemmatifar, Jin Soo Kang, Nil Ozbek, Kai-Jher Tan, T. Alan Hatton
Summary: A novel electrochemically mediated direct air capture (DAC) system using quinone-based chemistry for CO2 capture and release is reported. The system relies solely on the affinity of quinone moieties towards CO2 molecules, without requiring temperature or pH swing. The performance of the system is evaluated with small- and meso-scale cells, demonstrating high CO2 capture efficiency and low energy consumption.
Article
Chemistry, Physical
Wenpeng Yang, Lihua Qian, Rui Zheng, Dapeng Yang, Xiyuan Lu
Summary: The electrochemical reduction of CO2 to value-added chemicals using renewable electricity is a promising and environmentally friendly strategy to achieve carbon neutrality and address the greenhouse effect. This study investigates the CO2 electroreduction on nanoporous gold films of varying thicknesses. It highlights the importance of mass transfer effects in determining product selectivity and activity. The findings suggest that considering mass transfer effects is crucial for designing efficient electrocatalysts for CO2ER and understanding the relationship between the geometric structure and performance.
Article
Chemistry, Multidisciplinary
Xian Suo, Yuqing Fu, Chi-Linh Do-Thanh, Li-Qi Qiu, De-en Jiang, Shannon M. Mahurin, Zhenzhen Yang, Sheng Dai
Summary: Superbase-derived task-specific ionic liquids (STSILs) are an attractive and extensively studied system for carbon capture. In this work, carbanion-derived STSILs were developed for efficient CO2 chemisorption via a carboxylic acid formation pathway. The results demonstrate the importance of extended conjugation in the CO2-integrated product for achieving efficient CO2 chemisorption.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Xingyu Wang, Sanjubala Sahoo, Jose Gascon, Mikhail Bragin, Fangyuan Liu, Julia Olchowski, Samuel Rothfarb, Yuankai Huang, Wenjun Xiang, Pu-Xian Gao, S. Pamir Alpay, Baikun Li
Summary: In this study, the effects of polymer physical binding on the performance and selectivity of CO2RR were investigated. The addition of polytetrafluoroethylene (PTFE) was found to enhance the CO2 reduction process, modify the CO2RR pathway, and ultimately increase the average CH4 production by 10%. Despite an increase in ohmic resistance, the addition of PTFE lowered the energy barrier for CO protonation.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Mariana C. O. Monteiro, Stefan Dieckhoefer, Tim Bobrowski, Thomas Quast, Davide Pavesi, Marc T. M. Koper, Wolfgang Schuhmann
Summary: This research evaluates the CO2 reduction activity of GDEs using gold nanoelectrodes, demonstrating that the optimal local catalyst loading depends on the CO2 back pressure.
Article
Multidisciplinary Sciences
Zeshu Zhang, Chengliang Mao, Debora Motta Meira, Paul N. Duchesne, Athanasios A. Tountas, Zhao Li, Chenyue Qiu, Sanli Tang, Rui Song, Xue Ding, Junchuan Sun, Jiangfan Yu, Jane Y. Howe, Wenguang Tu, Lu Wang, Geoffrey A. Ozin
Summary: It has been found that the thermal catalyst Cu/ZnO/Al2O3 can enhance the catalytic performance of CO2 hydrogenation for the reverse water-gas shift and methanol synthesis reactions. However, due to direct competition between these reactions, high pressure and high hydrogen concentration are required to shift the thermodynamic equilibrium towards methanol synthesis. In this study, a new black indium oxide with photothermal catalytic activity was prepared, and it enabled the tandem synthesis of methanol at a low hydrogen concentration and ambient pressure by utilizing by-product CO as feedstock. The methanol selectivities achieved 33.24% and 49.23% at low and high hydrogen concentrations, respectively.
NATURE COMMUNICATIONS
(2022)
News Item
Chemistry, Multidisciplinary
Jennifer Strunk
Summary: Although light-driven conversion of carbon dioxide receives widespread attention, the challenge of distinguishing true product formation from impurities has been a criticism. However, advanced guidelines for proper product identification have been developed, allowing for greater trust in the observed outcomes.
Article
Chemistry, Applied
Chenyang Zhou, Yunsong Yu, Chen Zhang, Jingfeng Zhang, Zaoxiao Zhang, Geoff G. X. Wang
Summary: The development of an advanced solvent CuH/PANI/TEMPO has been shown to reduce energy consumption and enhance CO2 desorption efficiency. The decomposition of metal hydride CuH intensifies the thermoelectric effect between PANI and TEMPO, with the potential to significantly improve the efficiency of CO2 capture processes.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Aditya M. Limaye, Joy S. Zeng, Adam P. Willard, Karthish Manthiram
Summary: The authors introduce a Bayesian data analysis approach to estimate the Tafel slope of electrochemical catalysts, providing robust uncertainty estimates and alleviating the need for human intervention. By re-analyzing data from the CO2 reduction literature, they find no systematic preference for certain cardinal Tafel slopes.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Donghuan Wu, Feng Jiao, Qi Lu
Summary: This article introduces the importance of electroreduction of CO2 and CO in addressing carbon emissions and closing the carbon cycle. It also discusses how flow electrolyzers can overcome the low solubility of CO2 and CO and improve reaction rates and product selectivity.
