LAPSE:2023.29548
Published Article
LAPSE:2023.29548
The Relationship between Thermal Characteristics and Microstructure/Composition of Carbon Dioxide Hydrate in the Presence of Cyclopentane
April 13, 2023
Abstract
Hydrate-based carbon dioxide (CO2) separation and capture is a new technology for achieving CO2 emission reduction. However, it is still not commercially applied for the ambiguity of microscopic hydrate formation mechanism. In a constant volume experiment of hydrate formation, there are two or more pressure platforms, indicating that there might be two or more different hydrates formation in succession. In order to reveal the relationship between the microscopic process and the gas consumption in the process of hydrate formation, hydrate composition and formation mechanism of cyclopentane-CO2 (CP-CO2) system was investigated using a differential scanning calorimeter (DSC) and Raman spectroscopy. The results indicated CO2-CP binary hydrate and CO2 hydrate are formed successively, and they coexist in the final hydrate. CP-CO2 binary hydrates forms preferentially, and as crystal seeds, inducing the formation of CO2 hydrates. The two hydrates formation processes cause the two pressure-drops. The results provide a scientific basis for increasing the gas consumption in different stages of gas hydrate formation in the presence of hydrate formation promoter.
Hydrate-based carbon dioxide (CO2) separation and capture is a new technology for achieving CO2 emission reduction. However, it is still not commercially applied for the ambiguity of microscopic hydrate formation mechanism. In a constant volume experiment of hydrate formation, there are two or more pressure platforms, indicating that there might be two or more different hydrates formation in succession. In order to reveal the relationship between the microscopic process and the gas consumption in the process of hydrate formation, hydrate composition and formation mechanism of cyclopentane-CO2 (CP-CO2) system was investigated using a differential scanning calorimeter (DSC) and Raman spectroscopy. The results indicated CO2-CP binary hydrate and CO2 hydrate are formed successively, and they coexist in the final hydrate. CP-CO2 binary hydrates forms preferentially, and as crystal seeds, inducing the formation of CO2 hydrates. The two hydrates formation processes cause the two pressure-drops. The results provide a scientific basis for increasing the gas consumption in different stages of gas hydrate formation in the presence of hydrate formation promoter.
Record ID
Keywords
binary hydrate, carbon emission reduction, DSC, hydrate, microscopic mechanism
Subject
Suggested Citation
Xu CG, Wang M, Xu G, Li XS, Zhang W, Cai J, Chen ZY. The Relationship between Thermal Characteristics and Microstructure/Composition of Carbon Dioxide Hydrate in the Presence of Cyclopentane. (2023). LAPSE:2023.29548
Author Affiliations
Xu CG: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou [ORCID]
Wang M: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Nano Science and Technology Institute, University of Sciences and Technology of China, Suzhou 215123, China
Xu G: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; School of Engneering Sciences, University of Sciences and Technology of China, Hefei 230023, China
Li XS: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou
Zhang W: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; School of Engneering Sciences, University of Sciences and Technology of China, Hefei 230023, China
Cai J: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou
Chen ZY: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou [ORCID]
Wang M: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Nano Science and Technology Institute, University of Sciences and Technology of China, Suzhou 215123, China
Xu G: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; School of Engneering Sciences, University of Sciences and Technology of China, Hefei 230023, China
Li XS: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou
Zhang W: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; School of Engneering Sciences, University of Sciences and Technology of China, Hefei 230023, China
Cai J: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou
Chen ZY: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou [ORCID]
Journal Name
Energies
Volume
14
Issue
4
First Page
870
Year
2021
Publication Date
2021-02-07
ISSN
1996-1073
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Original Submission
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PII: en14040870, Publication Type: Journal Article
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LAPSE:2023.29548
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https://doi.org/10.3390/en14040870
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Apr 13, 2023
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