CARBON DIOXIDE INCORPORATION INTO SODALITE–LAZURITE GROUP MINERALS
ソーダライト–ラズライト系鉱物への二酸化炭素の取り込み (AI 翻訳)
V. L. Tauson, А.Н. САПОЖНИКОВ, С.В. ЛИПКО, R. Yu. Shendrik, Д.Н. БАБКИН
🤖 gxceed AI 要約
日本語
ラズライト系鉱物へのCO2取り込みを実験的に検討し、500℃で最大となる温度依存性を明らかにした。CO2吸収材としての可能性に言及するが、実用化には遠い基礎研究。
English
Experimental study on CO2 incorporation into lazurite-type minerals, showing temperature-dependent CO2 content with a maximum at 500°C. The authors suggest these minerals as promising CO2 absorbers, but practical CCS applications remain distant.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
鉱物へのCO2固定は国内CCS研究の一部と関連するが、本論文は基礎鉱物学に留まり、SSBJや有報など日本のGX実務への直接的な示唆は限定的。
In the global GX context
This paper adds fundamental geochemical data on CO2 mineral incorporation, relevant to the long-term stability of mineral carbonation in CCS. The sodalite-based materials concept may interest niche capture-material researchers but does not directly inform current disclosure or transition finance frameworks.
👥 読者別の含意
🔬研究者:Provides experimental conditions (temperature, CO2 fugacity) that could guide the development of mineral-based CO2 sorbents.
📄 Abstract（原文）
The first experimental data on the relationship between the carbon dioxide content in lazurite-type minerals (LTM) and its partial pressure in the gas phase and temperature in the range corresponding to the lazurite formation process at deposits in the Southern Baikal region have been obtained. The content of structural CO2 species was determined by IR-Fourier spectroscopy. It depends more on temperature than on the partial pressure of CO2 and is maximum for cubic lazurites at 500 °C (0.05–0.07 formula units, f.u.), decreasing to 0.01–0.03 f.u. both when the temperature decreases (460 °C) and when it increases (560 °C). A positive dependence of CO2 content on O2 fugacity in the system has been noted. LTM with an orthorhombic structure (vladimirivanovite) retains CO2 less effectively, with its content decreasing from the initial (natural) 0.08 to 0.01–0.02 f.u. in the specified temperature range of 460–560 °C. The experiments with exposure at 560 °C and subsequent cooling to 460 or 360 °C show the lack of retrograde CO2 solubility in LTM under saturation from gas phase. According to data on CO2 content, cubic lazurites with incommensurate 3D modulation of the structure could have formed at a temperature of about 500 °C, a partial CO2 pressure of ~1.4–2.2 bar, and fO2 at the level of the magnetite-hematite buffer. The high CO2 contents (0.15–0.3 f.u.) recorded in some LTMs may not be related to the direct absorption of CO2 from the gas (fluid) phase but are the product of relatively low-temperature (<400 °C) transformations of carbon forms, leading to the association of CO2 and molecular forms of sulphur. This temperature range and the fugacity of volatile compounds corresponding to such forms of sulphur should be considered as possible conditions for the synthesis or modification of materials based on sodalite, nosean and LTMs, which are promising as carbon dioxide absorbers or indicators.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.2113/rgg20264991first seen 2026-08-02 05:39:28
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