Song Xiaowei, Basheer Chanbasha, Xia Yu, Li Juan, Abdulazeez Ismail, Al-Saadi Abdulaziz A, Mofidfar Mohammad, Suliman Mohammed Altahir, Zare Richard N
Department of Chemistry, Stanford University, Stanford, California 94305, United States.
Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
J Am Chem Soc. 2023 Nov 29;145(47):25910-25916. doi: 10.1021/jacs.3c10784. Epub 2023 Nov 15.
Water (HO) microdroplets are sprayed onto a graphite mesh covered with a CuBiO coating using a 1:1 mixture of N and CO as the nebulizing gas. The resulting microdroplets contain urea [CO(NH)] as detected by both mass spectrometry and C nuclear magnetic resonance. This gas-liquid-solid heterogeneous catalytic system synthesizes urea in one step on the 0.1 ms time scale. The conversion rate reaches 2.7 mmol g h at 25 °C and 12.3 mmol g h at 65 °C, with no external voltage applied. Water microdroplets serve as the hydrogen source and the electron transfer medium for N and CO in contact with CuBiO. Water-gas and water-solid contact electrification are speculated to drive the reaction process. This strategy couples N fixation and CO utilization in an ecofriendly process to produce urea, converting a greenhouse gas into a value-added product.
使用氮气和一氧化碳的1:1混合物作为雾化气体，将水（H₂O）微滴喷到覆盖有CuBiO涂层的石墨网上。通过质谱和碳核磁共振检测发现，所得微滴含有尿素[CO(NH₂)₂]。这种气-液-固多相催化体系在0.1毫秒的时间尺度上一步合成尿素。在25℃且无外部电压施加的情况下，转化率达到2.7 mmol g⁻¹ h⁻¹，在65℃时为12.3 mmol g⁻¹ h⁻¹。水微滴作为与CuBiO接触的氮气和一氧化碳的氢源和电子转移介质。推测水-气和水-固接触起电驱动反应过程。该策略在一个生态友好的过程中将固氮和一氧化碳利用相结合以生产尿素，将一种温室气体转化为高附加值产品。
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