Article
Chemistry, Physical
Hao-yang Wang, Ying Jia
Summary: In order to reduce losses caused by propellant leakage accidents, water spraying devices have been applied in UDMH storage sites. However, this emergency measure results in the formation of toxic UDMH gas. To solve this problem, a magnetically recoverable sorbent for UDMH leakage is designed and prepared, which meets the requirements of environmental protection and recyclability. Dynamic spray experiments show that the use of this recoverable agent helps reduce UDMH gas leakage and environmental pollution caused by leakage accidents.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Environmental
Gaurav Bhattacharjee, Hari Prakash Veluswamy, Asheesh Kumar, Praveen Linga
Summary: Solidified Natural Gas (SNG) technology provides a compact and safe option for large-scale natural gas storage. Introducing thermodynamic promoters like THF into the classical methane-water system enables rapid gas uptake at moderate pressure and temperature. The study compares the stability of cylindrical mixed methane-THF (sII) and pure methane (sI) hydrate pellets, with results showing exceptional stability of sII hydrates and significant gas evolution from sI hydrates stored at different temperatures. Long-term stability testing of methane-THF (sII) hydrate pellets produced using fresh and seawater demonstrates the commercial viability of SNG technology.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Geosciences, Multidisciplinary
Qingchao Li, Difei Zhao, Junkai Yin, Xingyu Zhou, You Li, Peng Chi, Ying Han, Ubedullah Ansari, Yuanfang Cheng
Summary: Effective production of natural gas from hydrate-bearing sediments through various strategies is crucial in addressing the current global energy crisis. However, the dissociation of hydrates during gas production can weaken sediment strength and impact reservoir stability. This study thoroughly analyzed gas production, reservoir characteristics, and sediment deformation using the ABAQUS platform. The findings provide insights into the potential for commercial gas hydrate development and lay the groundwork for developing engineering measures to mitigate geological disasters in the hydrate production process.
NATURAL RESOURCES RESEARCH
(2023)
Article
Chemistry, Physical
Hao-yang Wang, Ying Jia, Xiao-meng Lv, Ke-ke Shen
Summary: This study addresses the issue of leakage in unsymmetrical dimethylhydrazine (UDMH) and finds that the use of carboxyl-rich graphene oxide can reduce the amount of leakage and provide valuable time for emergency operations.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Bhavya Joshi, Ahmed M. E. Khalil, Tanveer A. Tabish, Fayyaz A. Memon, Hong Chang, Shaowei Zhang
Summary: This study demonstrates the successful oxidation of graphite using ferrate(VI) compounds and the subsequent reduction to produce graphene. The results confirm the potential of ferrate(VI) compounds for environmentally-friendly oxidation of graphite and removal of contaminants from water.
Article
Energy & Fuels
Xiaochu Wang, Youhong Sun, Hangkai Chen, Saiyu Peng, Shuhui Jiang, Xiaolong Ma
Summary: In this study, a series of depressurization experiments were conducted in a triaxial hydraulic fracturing apparatus to investigate the fracturing behavior and gas production characteristics of methane hydrate-bearing sediments. The effects of hydrate saturation, fracturing fluid properties, and in-situ stress on fracturing behavior were analyzed. The results showed that sediments with low hydrate saturation could be fractured, and the fracture initiation pressure was positively correlated with the hydrate saturation. Additionally, the use of medium-viscosity fracturing fluid and inorganic salt-based clay stabilizer solution enhanced gas production rates and permeability, respectively.
Article
Geosciences, Multidisciplinary
Vanessa Monteleone, Hector Marin-Moreno, Gaye Bayrakci, Angus Best, Farhana Shaon, Mohammad Moinul Hossain, Ahmad Al Karim, Md Khurshed Alam
Summary: This study investigates the gas hydrate potential in the offshore Bangladesh, providing evidence for the first occurrence of natural gas hydrate in the area through analysis of seismic reflection profiles and modeling of the gas hydrate stability zone. The research reveals high amplitude reflections, Bottom Simulating Reflectors, and other features related to gas hydrate in the region.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Chemistry, Physical
Qiang Zhang, Yuying Yang, Huiqing Fan, Liu Feng, Guangwu Wen, Lu-Chang Qin
Summary: An improved Hummers method for synthesizing graphene oxide (GO) using boric acid has been developed, which can shorten the reaction time, inhibit effectively the generation of carboxyl groups, eliminate the emission of toxic gases, and increase the yield. The GO synthesized by this method has fewer structural defects compared to the traditional method.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Han Zhou, Xiuli Hu, Wei-Hai Fang, Neil Qiang Su
Summary: This research comprehensively studies the spin couplings between transition metal atoms doped on graphene and reveals their potential application in spintronic device design. It also verifies that the spin-coupling effect can exhibit a certain distance dependence and space propagation.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Engineering, Marine
Jiaxin Sun, Fulong Ning, Tianle Liu, Yanlong Li, Hongwu Lei, Ling Zhang, Wan Cheng, Ren Wang, Xinxin Cao, Guosheng Jiang
Summary: This study analyzed the challenging issue of horizontal well drilling in unconsolidated marine hydrate sediments through numerical simulations. The results show that increasing drilling fluid density and salinity may slightly accelerate hydrate dissociation, while a significant increase in drilling fluid temperature could lead to disasters in wellbore stability.
Review
Polymer Science
Alsu Venerovna Fakhreeva, Vasily Viktorovich Nosov, Alexander Iosifovich Voloshin, Vladimir Anatolyevich Dokichev
Summary: This review discusses the types and applications of chemical inhibitors of gas hydrate formation in the oil and gas industry. It analyzes the development of new types of environmentally safe green kinetic hydrate inhibitors (KHIs) based on biopolymers. The article considers the structure, physicochemical properties, efficiency, and commercial prospects of polysaccharides in preventing and controlling gas hydrate formation. It also presents recent research on cost-effective, efficient, and biodegradable KHIs for industrial applications in the oil and gas industry.
Article
Energy & Fuels
Chuanwen Sun, Shimin Liu, Shouding Li, Kai Wang, Yiming Sun, Xiao Li, Zhaobin Zhang
Summary: Nano-SiO2 particles can accelerate the formation of tetrahydrofuran hydrate and shorten the induction time, with an optimal mass concentration of 0.5 mg/mL.
Article
Environmental Sciences
Yingrui Song, Yuhong Lei, Likuan Zhang, Ming Cheng, Laicheng Miao, Chao Li, Naigui Liu
Summary: Studying the spatial-temporal variations of the gas hydrate stability zone (GHSZ) in the Dongsha region is important for understanding gas hydrate processes and proposing accumulation models. The research shows that bottom water temperature is a key factor influencing GHSZ thickness, and the current GHSZ thickness ranges from 110 m to 415 m.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Engineering, Environmental
Chun-Gang Xu, Wei Zhang, Hao-Yang Li, Chang-Wen Xiao, Xiao-Sen Li
Summary: This study combines macro experimental investigation, simulation calculation, and microscopic analysis to study the process of hydrate formation and the effects of gas molecules on hydrate nucleation. The results propose a more efficient hydrate formation method and provide directions for solving the key bottleneck of hydrate technology.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Ceramics
Jordi Aixart, Francesc Diaz, Jordi Llorca, Joan Rosell-Llompart
Summary: By increasing the reaction time, large-sized and well-exfoliated graphene oxide flakes can be obtained while maintaining chemical richness.
CERAMICS INTERNATIONAL
(2021)
