研究チームは、鉄分を豊富に含む岩石から水素を生成すると同時に二酸化炭素を固定できることを実験で実証した。この成果は先日の地球科学関連の会議で発表されたもので、クリーンエネルギーの創出と気候変動対策の両立を目指している。現在は、この手法の大規模な実証に向けたフィールド試験が計画されている。
テキサス大学オースティン校の科学者らは、加圧容器内に火山岩のサンプルを入れ、地下環境を模した圧力1.2～1.7メガパスカル、温度90度の条件下で実験を行った。二酸化炭素を含む水を加えたところ、不活性ガスを用いた対照実験よりも多くの水素が放出された。これは炭酸が岩石表面の分解を促進したためと考えられる。
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Researchers at ETH Zurich have engineered a catalyst using isolated indium atoms on hafnium oxide to convert CO2 and hydrogen into methanol more efficiently than previous methods. This single-atom design maximizes metal use and enables clearer study of reaction mechanisms. The breakthrough could support sustainable chemical production if powered by renewables.
Researchers have found that ancient rocks beneath Ontario are naturally producing hydrogen gas in measurable quantities. The discovery could offer a new domestic source of clean energy for Canada.
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An analysis suggests that spreading crushed silicate rocks on agricultural fields could remove up to 1.1 billion tonnes of carbon dioxide from the atmosphere each year by 2100, while boosting crop yields. The method, known as enhanced rock weathering, accelerates natural processes to lock away CO2. However, researchers highlight uncertainties about its scalability and potential side effects.
China has started a project in Shandong province to blend hydrogen into natural gas, providing energy to 100,000 households while cutting gas use. The equipment can handle up to 30,000 cubic metres of hydrogen-blended gas with up to a 10 per cent hydrogen mix, according to state broadcaster CCTV. The initiative forms part of a national green energy push.
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New research from Rutgers University reveals that meltwater from Antarctic ice shelves contributes far less iron to surrounding ocean waters than scientists had assumed. Instead, most iron originates from deep ocean water and continental sediments. The findings challenge expectations about iron fertilization and its role in carbon absorption.