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Capture and conversion of carbon oxides (CO&CO2) into urea by an innovative nanocomposite of doped iodine pentoxide and hydrazine hydrate onto Fullers earth clay

ヨウ素五酸化物とヒドラジン水和物をドープしたフラースアース粘土によるナノ複合材料を用いた炭素酸化物（COおよびCO2）の尿素への回収と変換 (AI 翻訳)

Gehan M. Nabil, Mohammed K. Obada, Mohamed E. Mahmoud

Scientific Reports📚 査読済 / ジャーナル2026-05-12#CCUS
DOI: 10.1038/s41598-026-45483-4
原典: https://doi.org/10.1038/s41598-026-45483-4
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🤖 gxceed AI 要約

日本語

本研究では、COとCO2を同時に回収し尿素に変換する新規ナノ複合材料Pal500@I2O5/N2H4を開発した。フラースアース粘土にヨウ素五酸化物とヒドラジン水和物を担持させ、実煙道ガスを用いて25°Cで試験。3段階プロセスで低流量時に95.43%の吸着と88%の変換率を達成した。

English

This study develops a novel nanocomposite (Pal500@I2O5/N2H4) using Fullers earth clay, iodine pentoxide, and hydrazine hydrate for simultaneous capture and conversion of CO and CO2 into urea. Tested with real flue gas at 25°C, it achieves 95.43% adsorptive binding and 88% conversion to urea at a low flow rate of 2.0 mL/min through a three-step process.

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

本研究成果は、二酸化炭素の回収・利用（CCUS）技術の一環として、日本が推進するGX政策における実用的な変換素材の開発に寄与する可能性がある。特に、産業排ガスからの直接的な尿素合成は、炭素循環型社会の実現に向けた有望なアプローチである。

In the global GX context

This paper presents an innovative nanocomposite for direct conversion of CO and CO2 into urea from flue gas, contributing to the global CCUS field. While still at lab scale, it demonstrates a potential pathway for industrial carbon utilization, aligning with net-zero emission goals.

👥 読者別の含意

🔬研究者:Novel nanocomposite for simultaneous CO/CO2 capture and conversion to urea offers a new route for carbon utilization.

🏢実務担当者:Potential for integration into industrial flue gas treatment systems for urea production.

🏛政策担当者:Support for CCUS innovation aligns with decarbonization policies.

📄 Abstract（原文）

Air pollution with carbonaceous greenhouse gases as CO&CO₂ is strongly impacting the atmospheric environment. Consequently, the capturing process of CO&CO₂ and their conversion reactions into valuable and sustainable products as fuel and other materials are representing a great challenge. Therefore, the current investigation is devoted to develop a novel nanocomposite for adsorptive conversion of CO&CO₂ gases into urea. An innovative nanocomposite was synthesized from the combination of Fullers earth clay (Pal500) with iodine pentoxide (I2O5) and hydrazine hydrate (N2H4) to form Pal500@I2O5/N2H4. The as-prepared nanocomposite was optimized to simultaneously capture CO&CO₂ and convert them into urea by applying a real industrial flue gas sample at 25 °C and high CO&CO₂ pressure. The initial step was related to capture and oxidative conversion of CO into CO2 by the directive adsorptive reaction with the loaded I2O5 onto Pal500@I2O5/N2H4. The second step was focused on the efficient adsorptive binding of CO2 on the surface of this nanocomposite. The third step is based on the instantaneous conversion of CO&CO₂ into urea. The adsorptive binding of CO&CO₂ was 95.43% and this was followed by 88.0% conversion to urea upon application of a lower gas flow rate at 2.0 mL/min.

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