Article
Chemistry, Physical
Mehran Dadsetan, Mohammad Fawaz Khan, Mehdi Salakhi, Erin R. Bobicki, Murray J. Thomson
Summary: A new method of CO2-free hydrogen production via non-plasma methane pyrolysis using microwaves is introduced in this study. The modular pyrolysis system can be built anywhere with access to natural gas and electricity, enabling distributed hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Yong-Gyu Noh, Young Jae Lee, Jina Kim, Yu Kwon Kim, JungSeub Ha, Shankara S. Kalanur, Hyungtak Seo
Summary: The study proposed a new method for hydrogen production through catalytic methane pyrolysis using a multi-stage bubble column reactor with liquid metal alloy catalysts. The 3-stage bubble column reactor showed higher methane conversion rates compared to the 2-stage reactor at high temperatures. Analysis of the carbon products revealed that similar carbon-based materials can be obtained from both reactors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Guillermina Amica, Fabiana C. Gennari
Summary: The synergistic effect of nickel and carbon nanotubes addition on thermochemical processes for CO2 recycling using MgH2 as hydrogen source was demonstrated, leading to a significant increase in methane production. Nickel acts as a catalyst promoting the Sabatier reaction, while carbon nanotubes may help protect the hydride and slow down its oxidation process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Jeongwon Kim, Arim Seong, Yejin Yang, Sangwook Joo, Changmin Kim, Dong Hyup Jeon, Liming Dai, Guntae Kim
Summary: The newly-developed membrane-free Mg-CO2 battery operates based on the indirect utilization of CO2, achieving efficient carbon sequestration with the generation of electricity and valuable chemicals, while maintaining excellent cycling performance.
Article
Chemistry, Multidisciplinary
Mingyu Gao, Jiaxuan Fan, Xintao Li, Qian Wang, Dianqing Li, Junting Feng, Xue Duan
Summary: We reported a strategy for carbon-negative H-2 production by coupling CO2 capture with H-2 evolution at ambient temperature and pressure. This was achieved by using a carbonate-type CuxMgyFez layered double hydroxide (LDH), where a photocatalysis reaction of interlayer CO32- reduction with glycerol oxidation induced the storage of electrons on LDH layers. The system exhibited high efficiency with a decent CO evolution amount and stable operation capability under simulated flu gas condition, showing promising application prospects.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Energy & Fuels
Bashirul Haq, Nasiru Salahu Muhammed, Jishan Liu, Hui Tong Chua
Summary: This critical review comprehensively examines the technical aspects of carbon dioxide enhanced gas recovery (CO2-EGR) for hydrogen production. The study finds that high pressure and moderate injection rates can improve EGR, while heterogeneous reservoirs tend to yield lower recovery rates. Factors such as flow rate, pressure, temperature, connate water, brine saturation, shale content, and the type of fluid phase used for injection significantly affect the molecular diffusivity of the injected gas and subsequent recovery outcomes. Simulation studies highlight the potential of injecting various gases with proper reservoir operation timing to enhance recovery and enable sustainable hydrogen production.
Article
Engineering, Environmental
Guiyan Zang, Pingping Sun, Amgad Elgowainy, Michael Wang
Summary: CO2 capture and utilization provide an alternative pathway for low-carbon hydrocarbon production. The study found that the methanol production systems, including integrated and stand-alone systems, have different environmental impacts and prices that are influenced by the hydrogen price and CO2 abatement credits.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Green & Sustainable Science & Technology
George V. Belessiotis, Athanassios G. Kontos
Summary: This review discusses the recent developments in highly efficient photocatalytic composites containing plasmonic silver (Ag). It provides a detailed description of their Surface Plasmon Resonance (SPR) mechanisms, structural and electrochemical properties, and their application in renewable fuel production. The study shows that silver composites exhibit advantages in photocatalytic applications due to the localized SPR effect, which increases photo-charge production near the semiconductor surface and improves charge separation and light responsiveness. The effects of silver integration on the material properties of semiconductors are analyzed, and the photocatalysis applications of silver composites for hydrogen generation and carbon dioxide conversion are critically reviewed.
Article
Chemistry, Applied
Muhammad Masood Khan, Lijun Jin, Muhammad Mahmood Khan, Yang Li, Hammad Saulat, Yun Zhang, Muhammad Sarfraz, Jialong Zhu, Haoquan Hu
Summary: The addition of activated carbon to Ni/MgO-Al2O3 catalyst improved textural properties, increased surface area and pore volume, and decreased the size of metal Ni. The 10% activated carbon loading in 10AC-Ni/MgO-Al2O3 exhibited the best catalytic activity and stability.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Chaojun Cui, Ye Wang, Xiangze Du, Li Li, Mouxiao Song, Wenqing Zeng, Guiying Li, Changwei Hu
Summary: The study demonstrates the significant influence of nickel loading on the performance of CO2 reforming of methane catalysts. Lower nickel loading can lead to increased CH4 conversion stability without coke formation, while higher nickel loading results in decreased activity and carbon accumulation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Zaira Navas-Anguita, Diego Garcia-Gusano, Javier Dufour, Diego Iribarren
Summary: The study focuses on the potential role of different hydrogen production pathways in providing hydrogen for fuel cell electric vehicles in Spain from 2030 to 2050. The results show that steam methane reforming can meet the demand for hydrogen in the short term, while water electrolysis is a medium-to-long-term alternative, which is associated with carbon footprint considerations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
David Neuschitzer, David Scheiblehner, Helmut Antrekowitsch, Stefan Wibner, Andreas Sprung
Summary: This article discusses the research on methane pyrolysis in a liquid metal bubble column reactor. The study finds that temperature has a significant impact on methane conversion, while the effect of methane flow rate is relatively small. Additionally, the investigation on carbon layers covering the surface of the liquid metal column is conducted, and a comparative analysis between LMBCR and BTR is presented.
Article
Chemistry, Multidisciplinary
Jaeseo Lee, Wonhee Lee, Kyung Hwan Ryu, Joungho Park, Hyojin Lee, Jay H. Lee, Ki Tae Park
Summary: The study focuses on examining CO production performance using CF-ECO2R, which shows higher energy conversion efficiency and lower cell voltage compared to traditional methods. The developed mathematical model and techno-economic analyses suggest that the technology is feasible, economically competitive, and has the potential to reduce CO2 emissions significantly. Operating voltage of CF-ECO2R and regional factors strongly impact the cost and CO2 emissions of the system.
Article
Chemistry, Multidisciplinary
Jiawei Li, Yawen Jiang, Jiayi Li, Xinyu Wang, Hengjie Liu, Ning Zhang, Ran Long, Yujie Xiong
Summary: A pyrolysis-free method was developed to prepare a high-loading single-atom Cu catalyst with well atomic dispersion, which achieved efficient CO2-to-CH4 conversion with CH4 faradaic efficiencies over 70%.
Article
Chemistry, Physical
Justin Prabowo, Leo Lai, Benjamin Chivers, Declan Burke, An Huy Dinh, Linlin Ye, Yangyang Wang, Yanqing Wang, Li Wei, Yuan Chen
Summary: This review summarizes recent research findings related to solid carbon co-products from CH4 pyrolysis, including methods classification, carbon material formation mechanism, comparison of carbon materials produced by different methods, and application studies. Diverse carbon materials are currently produced in CH4 pyrolysis, but systematic studies on their purification and applications are still limited.