Article
Engineering, Environmental
Byeonggwan Lee, Kyuchul Shin, Sanehiro Muromachi, Igor L. Moudrakovski, Christopher I. Ratcliffe, John A. Ripmeester
Summary: Antifreezes such as methanol and ammonia can enhance methane storage in binary clathrate hydrates like THF and TBAB. Methanol acts as a catalyst for methane hydrate formation and induces TBAB hydrates to form an orthorhombic structure suitable for methane storage. These findings suggest that methanol could play a crucial role in hydrate-based methane storage systems.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Asheesh Kumar, Hari Prakash Veluswamy, Sanat Kumar, Rajnish Kumar, Praveen Linga
Summary: Clathrate hydrate-based sustainable technologies, such as solidified natural gas (SNG) technology, show great potential for storing natural gas. Experiments on mixed hydrates in a seawater environment reveal the promotional effect of seawater on hydrate formation and suggest the economic feasibility of using natural seawater to enhance SNG technology.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Energy & Fuels
Nithin B. Kummamuru, Geert Watson, Radu-George Ciocarlan, Sammy W. Verbruggen, Pegie Cool, Pascal Van der Voort, Patrice Perreault
Summary: This study explores the potential of two hydrophobic porous materials in promoting methane clathrate formation. The results show that both materials can facilitate the formation of methane clathrates under mild operating conditions and have high methane storage capacities. Overall, the study concludes that these materials are effective promoters of methane clathrates, making clathrate-based methane storage and transport technology industrially viable.
Article
Thermodynamics
Sanehiro Muromachi, Kiyofumi Suzuki, Norio Tenma
Summary: This study reports phase equilibrium data for urea + methane + water and urea + carbon dioxide + water systems, and finds that urea can be used as a thermodynamic hydrate inhibitor in subsea methane hydrate systems. The inhibition effect of urea is slightly weaker than that of methanol, but it can reach applicable hydrate inhibition temperatures under specific conditions. Based on the present equilibrium data and seafloor conditions, urea can be used for methane gas production and hydrate-based carbon capture and storage systems.
FLUID PHASE EQUILIBRIA
(2023)
Article
Astronomy & Astrophysics
Elodie Gloesener, Ozgur Karatekin, Veronique Dehant
Summary: The study investigated the distribution and stability depth of CH4-rich clathrate hydrates in the Martian soil, finding that they are shallower in high latitude regions and deeper at the equator. Factors influencing the stability of clathrates were considered, such as gas phase composition and presence of brines.
Article
Engineering, Environmental
Dong Woo Kang, Wonhyeong Lee, Yun-Ho Ahn, Jae W. Lee
Summary: The study investigated the use of confined tetrahydrofuran (THF) solution in a superabsorbent polymer for developing a reusable gas storage system based on hydrates. It was found that the THF-absorbed SAP could effectively initiate the nucleation and growth of hydrates, maintaining formation behavior over multiple cycles. Despite a slight decrease in methane storage capacity over cycles due to volatile THF loss, a tuning phenomenon occurred leading to a constant storage capacity, confirmed through spectroscopic analysis.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Peng Wang, Jun Wang, Ke Xu, Yanwen Lin, Qiao Shi, Tong Li, Yuequn Fu, Zhisen Zhang, Jianyang Wu
Summary: This study investigates the structure and stability of clathrate hydrates encapsulating fluorinated methane derivatives under mechanical load through molecular dynamics simulations. The study finds distinct structural and mechanical behaviors among different clathrate hydrates, and the lattice constant of clathrate hydrates is influenced by the size and dipole moment of the encapsulated fluorinated methane.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Environmental
Yongji Wu, Yurong He, Ming Zhai, Tianqi Tang
Summary: Research shows that using wet activated carbon samples and ice induction can effectively improve the synthesis rate and storage capacity of methane hydrates. By combining certain water content, appropriate particle size of activated carbon, and suitable pressure conditions, methane hydrates with high methane storage capacity can be obtained. This innovative technology is of great significance for the development of solidified natural gas technology.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Mechanical
Jinjie Liu, Ke Xu, Li Yang, Yanwen Lin, Tong Li, Xuezheng Gao, Zhisen Zhang, Jianyang Wu
Summary: This study used classic molecular dynamic simulations to investigate the fracture mechanics of three main methane clathrate hydrates, revealing different mechanical properties among them and degradation caused by nanocracks. Additionally, tip amorphization during crack propagation process was observed in the three methane clathrate hydrates.
ACTA MECHANICA SINICA
(2021)
Article
Chemistry, Multidisciplinary
Feng Zhang, Hao Ni, Yi Wang, Fujun Xia, Baojun Wei, Xuefeng Liu
Summary: By using classical molecular dynamics simulations, the mechanical stability of CO2-N2 heteroclathrate hydrates (CNHHs) under uniaxial loading was investigated. The ratio of CO2 to N2 in the large and small water cages was found to have a crucial effect on the mechanical properties and fracture behaviors of CNHHs. The occupancy of small cages by CO2 was identified as a decisive factor affecting fracture position, leading to brittle or ductile fracture behavior. These findings provide insights into the deformation and fracture mechanisms of heteroclathrate hydrates and the impact of CO2 sequestration on the stability of gas hydrate reservoirs.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Energy & Fuels
Jiwoong Seol
Summary: The addition of propylene oxide (PO) and epoxyisobutane (EIB) significantly improves the thermodynamic stability of methane hydrates and enhances methane storage capacity. The microstructures of the methane hydrates containing both PO and EIB were identified as the sII type, showing stability even at ambient temperature and mild pressure. Both PO and EIB act as powerful promoters with good water miscibility, offering potential for sustainable and energy-efficient methane storage technologies.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Antoine Patt, Sylvain Picaud
Summary: This study used Monte Carlo simulations to investigate the competitive trapping of methane and ethane molecules into clathrate hydrates under Titan-like temperature conditions. The results show that ethane molecules can be trapped at lower pressures than methane, with a preference for the large cages of the clathrate lattice. Increasing pressure may lead to ethane molecules also occupying the small cages, potentially competing with methane molecules at high pressure.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Chemistry, Physical
Satoshi Takeya, Daisuke Yahagi, Akihiro Hachikubo
Summary: The crystallographic structure and dissociation kinetics of thermodynamically unstable structure I carbon monoxide (CO) hydrate were investigated, along with the dissociation of binary gas hydrates involving CO and other gases. The phase transition of ice formed by CO hydrate dissociation was found to be crucial for the kinetic stability of the hydrate.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Satoshi Takeya, Sanehiro Muromachi, Akio Yoneyama, Keiichi Hirano, Kazuyuki Hyodo, John A. Ripmeester
Summary: Methane hydrate in the superheated state can be stored for a long time, and by coating it with other hydrates, the need for a defect-free interface between different hydrates can be eliminated. This study found that liquid cyclopentane can keep gas hydrate crystals intact and convert the outer layer of methane hydrate into cyclopentane hydrate.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Shengli Liu, Wenxiu Zhang, Huanhua Wu, Jiaheng Wang, Yongqi Yuan, Sikai Wang, Jinxiang Liu
Summary: Clathrate hydrate is a promising candidate for hydrogen storage, and the addition of natural gas can reduce the formation pressure and improve energy density. Through calculations and simulations, we estimated the hydrogen storage capacity of H2-CH4 binary hydrate and studied its thermodynamical and mechanical stability. The binary hydrate can maintain its structure under moderate temperature and pressure, and exhibits a self-preservation effect at -270 K, making it suitable for hydrogen storage and transport. These findings enhance our understanding of mixed hydrate as a viable hydrogen storage technology for achieving a sustainable hydrogen economy.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Duo Sun, Peter Englezos
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2017)
Article
Thermodynamics
Duo Sun, John Ripmeester, Peter Englezos
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2016)
Article
Energy & Fuels
Duo Sun, Peter Englezos
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2016)
Article
Chemistry, Physical
Hassan Sharifi, Akio Yoneyama, Satoshi Takeya, John Ripmeester, Peter Englezos
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Thermodynamics
Jairo Eduardo Cendales, Mingsi Yin, Peter Englezos
Summary: The study compared the induction time and rate of hydrate crystal growth in cellulose nanocrystal suspensions and CO2 hydrate formation in pure water, finding that CNC did not significantly impact CO2 hydrate formation. This raises questions about previous claims regarding the effects of carbon nanotubes and nanoparticles on gas hydrate formation, which were based on small sample sizes without statistical data analysis.
FLUID PHASE EQUILIBRIA
(2021)
Article
Chemistry, Multidisciplinary
Sanehiro Muromachi, Hassan Sharifi, Saman Alavi, John A. Ripmeester, Peter Englezos
Summary: This study investigated the structural characteristics of clathrate hydrates formed with the cyclic amine pyrrolidine and the structurally related THF. The inclusion of pyrrolidine led to an expansion of cage sizes in the hydrate, while the cages without pyrrolidine did not expand to the same degree. The refined X-ray diffraction structure suggested that pyrrolidine was incorporated in the large cage without forming hydrogen bonds with the cage water molecules, supported by molecular dynamics simulations showing weak hydrogen bond interactions between pyrrolidine and water molecules.
CRYSTAL GROWTH & DESIGN
(2021)
Review
Energy & Fuels
Xi-Yue Li, Bin-Bin Ge, Jin Yan, Yi-Yu Lu, Dong-Liang Zhong, Peter Englezos, Bao-Yong Zhang
Summary: The consumption of natural gas is vital for optimizing China's energy structure towards reduced CO2 emissions. Coalbed methane is recognized as a significant energy resource to supplement conventional fossil fuels. The hydrate-based gas separation technology has shown promise for purifying low-concentration coalbed methane, but challenges remain in achieving milder pressure conditions and enhancing hydrate formation rates. Further research is needed to bridge the gap between gas separation science and technology.
Article
Mechanics
Mehr Negar Mirvakili, Savvas G. Hatzikiriakos, Peter Englezos
Summary: By casting MF suspensions on hydrophobic and hydrophilic substrates under controlled conditions, opaque films were found to form on the hydrophilic surface, while translucent films formed on the hydrophobic one. The physical and mechanical properties of MF films were comparable to those of nano-fibrillated cellulose and microfibrillated cellulose films. The observations from MF film formation on substrates of different wettability are discussed in relation to water evaporation from sessile droplets containing nanoparticles.
Article
Thermodynamics
Feng-Mei Xie, Xi-Yue Li, Dong-Liang Zhong, Peter Englezos, Guo-Xiang Lu
Summary: This study demonstrates the phase behavior of TBPB and CO2 hydrates at different concentrations, with the addition of surfactant affecting phase equilibrium and CO2 consumption during formation. Further research should focus on increasing the CO2 storage capacity of TBPB semiclathrate hydrate.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Review
Engineering, Chemical
Anil K. Mehrotra, Peter Englezos
Summary: This paper reviews the research contributions of Professor Bishnoi in the field of chemical engineering. With a productive and illustrious career spanning over four decades, Prof. Bishnoi has made significant contributions to understanding thermodynamics, kinetics, and process design in chemical engineering. The review highlights his academic achievements and the impact of his research in various areas, including gas hydrates and hydrocarbon systems.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Liang-Meng Wu, Xi-Yue Li, Feng-Mei Xie, Dong-Liang Zhong, Peter Englezos, Jin Yan
Summary: This study presents a review of kinetic studies on the enhancement of hydrate-based CO2 capture using additives, porous media, nanofluids, etc. Future research directions are also discussed. The aim of this review is to aid understanding of the mechanism of the hydrate-based CO2 capture process and provide references for its industrial applications in the near future.
Article
Energy & Fuels
Hassan Sharifi, Peter Englezos
Summary: This article introduces a new apparatus designed to demonstrate the use of the hydrate process in CO2 capture and gas separations. The apparatus consists of two fixed-bed hydrate crystallizers that can operate at a scale of several kilograms per day. The concept of a dual-bed cyclic gas hydrate process is also described, along with its operating mode.
Editorial Material
Engineering, Chemical
Peter Englezos, Anil K. Mehrotra
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Danial Arab, Steven L. Bryant, Ole Torsaeter, Peter Englezos, Bhushan Gopaluni, Apostolos Kantzas
Summary: This study investigates the mechanisms of AS floods augmented with polymer solutions in viscous oil systems. The results show that emulsification and oil entrainment play a critical role in enhancing oil recovery.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Thermodynamics
Peter Englezos
Summary: This article discusses the research progress and challenges in the field of canonical clathrate or gas hydrate phase equilibria, as well as the application of computational methods and models. It also explores the potential of machine learning techniques in hydrate and thermodynamic calculations.
FLUID PHASE EQUILIBRIA
(2024)