Elucidation of gas uptake performance of clathrate hydrates for storage of low-carbon resources using natural cold energy

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K12269
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 64050:Sound material-cycle social systems-related
• Research Institution: Kitami Institute of Technology
• Principal Investigator: Kida Masato 北見工業大学, 工学部, 准教授 (90635814)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: クラスレートハイドレート / バイオガス / 天然ガス / CO2分離 / メタン

Outline of Final Research Achievements

This study elucidated a principle for utilizing clathrate hydrates (CHs) as storage/purification media for low-carbon resources such as natural gas and biogas. Three types of CHs, which can be generated by using outside temperatures in cold regions or other sustainable energies, were investigated. In this study, we clarified that the CHs showed selective CO2 incorporation, and revealed temperature and pressure conditions for capturing methane and CO2. This study provide knowledge for utilizing CHs as storage/purification media for low-carbon resources.

Free Research Field

物理化学

Academic Significance and Societal Importance of the Research Achievements

本研究で示すクラスレートハイドレート（CH）の低炭素資源の貯蔵・精製技術構築のためのCHの結晶特性を活用するための知見は、今後多様化すると考えられる「地域の低炭素資源の利活用」に向け、従来の大規模技術の概念にとらわれない新しい低炭素資源の貯蔵・精製技術の創出に貢献することが期待される。本研究では、自然冷熱を活用した省エネルギー的な低炭素資源の貯蔵・精製システムの構築の足がかりとなる基礎原理を提供する。