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
Chemistry, Multidisciplinary
Yong Chen, Chen Chen, Amadeu K. Sum
Summary: Through systematic molecular dynamic simulations, this study provides detailed insights into the nucleation and crystal growth mechanism of mixed type II clathrate structures, revealing uncorrelated uptake rates of methane and propane molecules in different solution compositions. The coexistence of type I and type II structures in the solid phase has been captured, indicating that type I patterns appear earlier than thermodynamically preferred type II structures.
CRYSTAL GROWTH & DESIGN
(2021)
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
Energy & Fuels
Sebastian Ovalle, Camilo Martinez, Juan G. Beltran
Summary: Gas hydrates are a major concern in oil and gas pipelines as they can cause blockages and pose safety risks. Understanding the surface behavior of gas hydrates is crucial in flow assurance. The study presents observations on the morphology and phase boundary behavior of hydrates formed by different gas compositions. It was found that the growth and propagation of hydrates were influenced by the gas composition and driving force, with liquid water playing a significant role in halo growth.
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
Chun-Yu Lai, Mengxiong Wu, Xuanyu Lu, Yulu Wang, Zhiguo Yuan, Jianhua Guo
Summary: This study demonstrates that microbially reducing perchlorate in groundwater can be driven by ethane or propane under oxygen-limiting conditions, offering a cost-effective strategy for ex situ groundwater remediation. Analysis of transcript abundance and high-throughput sequencing revealed the key microorganisms involved in the process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Sebastian Ovalle, Camilo Martinez, Juan G. Beltran
Summary: The HLV equilibrium conditions of two ternary gas mixtures were investigated in this study, and it was found that the long experimental times pose a challenge for multicomponent systems. The technique used in this research bypasses these limitations and provides fast and reproducible HLV equilibrium data for gas-dominated systems.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
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
Chemistry, Physical
Naoki Noguchi, Yui Shiraishi, Maho Kageyama, Yuu Yokoi, Saki Kurohama, Natsuki Okada, Hidekazu Okamura
Summary: The pressure-induced amorphization of ice and clathrate hydrates with methane and ethane as guest molecules was investigated. The study used Raman and infrared spectroscopy to analyze the changes in structure. The results showed that methane hydrate underwent amorphization at 2-3.5 GPa, while ethane hydrate underwent amorphization at 4.0-5.5 GPa. This study contributes to a better understanding of the changes in local structure and dynamics of the guest molecules during amorphization.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Engineering, Environmental
Anna A. Lysova, Konstantin A. Kovalenko, Anton S. Nizovtsev, Danil N. Dybtsev, Vladimir P. Fedin
Summary: This study thoroughly investigated the adsorption and separation of light saturated hydrocarbons (methane, ethane, and propane) on a series of metal-organic frameworks. The impact of the size and nature of the glycol moiety on the adsorption parameters was revealed. The studied metal-organic frameworks showed exceptional performance in the practical separation of natural gas or other relevant mixtures of light alkanes.
CHEMICAL ENGINEERING JOURNAL
(2023)
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
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
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)