Xin-Yang Zeng

Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)

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Guangjin Chen

China University of Petroleum, Beijing

Chang‐Yu Sun

China University of Petroleum, Beijing

Jing‐Chun Feng

Guangdong University of Technology

Si Zhang

Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)

Guozhong Wu

Guangdong University of Technology

Jin‐Rong Zhong

Changsha University of Science and Technology

Ying Kong

Dalian University of Technology

Liwei Cheng

China University of Geosciences

Yan Xie

Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)

Jiang Wang

Wuhan University

Cooperative Institutions

China University of Petroleum, Beijing

Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)

Guangdong University of Technology

Chinese Academy of Sciences

Tsinghua University

Tianjin University

Tsinghua–Berkeley Shenzhen Institute

South China Sea Institute Of Oceanology

Central South University

University Town of Shenzhen

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Self-preservation and structural transition of gas hydrates during dissociation below the ice point: an in situ study using Raman spectroscopy

Scientific Reports (2016)

Jin‐Rong Zhong Xin-Yang Zeng Feng-He Zhou Qi-Dong Ran Chang‐Yu Sun

Abstract The hydrate structure type and dissociation behavior for pure methane and methane-ethane hydrates at temperatures below the ice point and atmospheric pressure were investigated using in situ Raman spectroscopic analysis. The self-preservation effect of sI methane hydrate is significant at lower temperatures (268.15 to 270.15 K), as determined by the stable C-H region Raman peaks and A L / A S value (Ratio of total peak area corresponding to occupancies of guest molecules in large cavities to small cavities) being around 3.0. However, it was reduced at higher temperatures (271.15 K and 272.15 K), as shown from the dramatic change in Raman spectra and fluctuations in A L / A S values. The self-preservation effect for methane-ethane double hydrate is observed at temperatures lower than 271.15 K. The structure transition from sI to sII occurred during the methane-ethane hydrate decomposition process, which was clearly identified by the shift in peak positions and the change in relative peak intensities at temperatures from 269.15 K to 271.15 K. Further investigation shows that the selectivity for self-preservation of methane over ethane leads to the structure transition; this kind of selectivity increases with decreasing temperature. This work provides new insight into the kinetic behavior of hydrate dissociation below the ice point.

Clathrate hydrate

10.1038/srep38855

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Citations (49)

“Self‐Preservation” of Methane Hydrate in Pure Water and (Water + Diesel Oil + Surfactant) Dispersed Systems

Xin-Yang Zeng Chang‐Yu Sun Guangjin Chen Feng-He Zhou Qi-Dong Ran

This chapter contains sections titled: Introduction Experiments Results and Discussion Conclusions Acknowledgement

Acknowledgement

Clathrate hydrate

10.1002/9781118938652.ch11

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Investigating the partial structure of the hydrate film formed at the gas/water interface by Raman spectra

Chemical Engineering Science (2016)

Xin-Yang Zeng Jin‐Rong Zhong Yi-Fei Sun Shengli Li Guangjin Chen

Mole fraction

Clathrate hydrate

Crystal (programming language)

Fraction (chemistry)

10.1016/j.ces.2016.11.012

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Citations (20)

Riddles of Lost City: Chemotrophic Prokaryotes Drives Carbon, Sulfur, and Nitrogen Cycling at an Extinct Cold Seep, South China Sea

Microbiology Spectrum (2022)

Yu Chen Yuanjiao Lyu Jian Zhang Qiqi Li Lina Lyu

This research paper uncovered the potential mechanisms for microbiota mediated geochemical cycling in extinct cold seep, advancing our understanding in deep sea microbiology ecology.

Cold seep

Petroleum seep

10.1128/spectrum.03338-22

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Citations (10)

Kinetics behaviors of CH4 hydrate formation in porous sediments: Non-unidirectional influence of sediment particle size on hydrate formation

Energy (2023)

Yan Xie Liwei Cheng Jing‐Chun Feng Tao Zheng Yujie Zhu

Clathrate hydrate

Saturation (graph theory)

Particle (ecology)

10.1016/j.energy.2023.130021

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Citations (11)

Location optimization of silicon carbide foam packings in the unstirred packing trays reactor for the enhancement of solidified natural gas storage

Chemical Engineering Science (2022)

Linqing Tian Li Ha Li Wang Guangjin Chen Frédéric Coulon

Clathrate hydrate

10.1016/j.ces.2022.117503

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Citations (7)

In-situ Raman study on kinetics behaviors of hydrated bubble in thickening

The Science of The Total Environment (2021)

Xin-Yang Zeng Guozhong Wu Si Zhang Liwei Sun Chang‐Yu Sun

Clathrate hydrate

10.1016/j.scitotenv.2021.152476

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Citations (16)

Hydrogen separation via forming hydrate in W/O emulsion

Fluid Phase Equilibria (2013)

Bei Liu Huang Liu Bo Wang Jin Wang Chang‐Yu Sun

Clathrate hydrate

Cyclopentanes

Aqueous two-phase system

10.1016/j.fluid.2013.10.019

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Citations (12)

Kinetic Behaviors of Methane Hydrate Formation with Bubble Seeping at Conditions of “Haima” Cold Seep

Energy & Fuels (2021)

Pian Li Jing‐Chun Feng Zhifeng Yang Si Zhang Xin-Yang Zeng

Marine methane sequestration pattern and potential play significant roles in climate change mitigation. It is essential to study the fate of methane bubbles migrating from the seafloor, given the widespread occurrence of methane seeping in the seafloor. We investigated the kinetics of methane hydrate formation in bubble flow, including the mass transfer of the CH4 gas and water molecules at different flow patterns, morphological evolution and gas consumption during hydrate formation in the reactor, at 277.2 K and 12 MPa corresponding to temperature and pressure in "Haima" cold seeping surroundings. We found that a critical-state flow rate existed between steady and unsteady flow patterns, which sharply shortened nucleation time in induction processes. Moreover, hydrates might be found not to form under high driving forces of pressure. This work can help to explore the hydrate formation mechanism and the assessment of the carbon content under the surrounding of the sub seafloor.

Petroleum seep

Clathrate hydrate

10.1021/acs.energyfuels.1c01835

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Citations (8)

Towards Green Development: How Digitalization Solve the Contradiction between Economy and Environment as Well as Ecology

Mao Wu Xin-Yang Zeng

Contradiction

Green Economy

10.2139/ssrn.4848210

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