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鉱物触媒水熱反応を用いた二酸化炭素の地中資源化システム

利用矿物催化水热反应的二氧化碳地下资源回收系统

基本信息

批准号：
18J12695
负责人：
WANG JIAJIE
金额：
$ 1.22万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2018
资助国家：
日本
起止时间：
2018-04-25 至 2020-03-31
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18J12695/
关键词：
Olivine Serpentinization CO2 mineralization Hydrogen production serpentinization carbonation CO2 storage Hydrocarbon

项目摘要

In this research year, reaction pathways and Fe behaviors during water-olivine-CO2 reactions under different reaction conditions were further summarized and published in the conferences of "17th ICCDU (Germany, 2019)" and 日本地球惑星科学連合大会(2019).The influences of the most common coexisting minerals (i.e., pyroxenes and spinel) with olivine in peridotite in natural system were clarified. The presence of orthopyroxene or Mg-Al spinel can accelerate olivine alteration in CO2-rich hydrothermal environments and change Fe(II) behaviors without significant influence on the total H2 yield in terms of long-time reaction. However, the mineralization of CO2 could not be enhanced. The role of orthopyroxene and Mg-Al spinel also changed with the reaction time. These findings suggest that using peridotite that contains pyroxenes or spinels for H2 production is also possible; in general, peridotite contains <20 wt% orthopyroxene or >10 wt% Mg-Al spinel is more suitable for H2 production than monomineralic olivine. For another, several ways for elevating H2 production (e.g., including Al sources) were also suggested.This part of research is a step forward in large-scale application of the new negative-carbon H2 production system. The results have been summarized into 2 papers published in the journal of “International Journal of Hydrogen energy (IF: 4.229)”.

In this research year, reaction pathways and Fe behaviors during water-olive-CO2 reactions under different reaction conditions were further summarized and published in the conferences of "17th ICCDU (Germany, 2019)" and Japan Earth Science Federation Conference (2019).The influences of the most common coexisting minerals (i.e., pyroxenes and spinel) with olivine in peridotite in natural system were clarified. The presence of orthopyroxene or Mg-Al spinel can accelerate olivine alteration in CO2-rich hydrothermal environments and change Fe(II) behaviors without significant influence on the total H2 yield in terms of long-time reaction. However, the mineralization of CO2 could not be enhanced. The role of orthopyroxene and Mg-Al spinel also changed with the reaction time. These findings suggest that using peridotite that contains pyroxenes or spinels for H2 production is also possible; in general, peridotite contains <20 wt% orthopyroxene or >10 wt% Mg-Al spinel is more suitable for H2 production than monomineralic olivine. For another, several ways for elevating H2 production (e.g., including Al sources) were also suggested.This part of research is a step forward in large-scale application of the new negative-carbon H2 production system. The results have been summarized into 2 papers published in the journal of “International Journal of Hydrogen energy (IF: 4.229)”.