2024年12月4日 · We developed an MEA electrolyzer that utilizes X-ray absorption spectroscopy to investigate the structural evolution of Cu 2 O-derived catalysts under CO 2 R and compare the same catalysts in a flow cell. Additionally, we study the influence of CO reduction and incorporating Ag on the reconstruction of the catalyst.

2022年12月5日 · This Perspective briefly discusses the mechanisms for salt formation, and recently reported strategies for preventing or reversing salt formation in zero-gap CO 2 reduction membrane electrode assemblies. We link these approaches to the solubility limit of potassium carbonate within the electrolyzer and describe how each strategy separately ...

2022年4月22日 · One promising configuration is a zero-gap electrolyzer, with the CO 2 reduction catalyst loaded onto a gas-diffusion electrode (GDE) in direct contact with a cation exchange membrane (CEM), bipolar membrane (BPM), or anion exchange membrane (AEM). Zero-gap structures have been proposed as a route to high current densities and reduced ...

17 小时之前 · Having a coronary artery calcium (CAC) score of zero has generally been accepted as a marker of a very low risk of having a cardiac event within the next five years. However, age is a strong ...

2025年1月14日 · Here, we systematically show the relationship between salt accumulation and four system parameters including cation species, anolyte concentration, membrane thickness, and operating temperature. To compare each metric, we quantified the cation accumulation rate at predefined operating times.

2023年5月30日 · This Viewpoint discusses the implications of the net zero energy transition on traditional chemical feedstocks and catalytic elements. While the full impact of the upcoming changes is difficult to assess, some trends from scenarios already underway can be mapped.

3 天之前 · The cycloaddition reactions of bicyclo[1.1.0]butanes with alkenes, imines, nitrones, or aziridines have served as an efficient platform to create conformationally restricted saturated bicyclic scaffolds. However, the use of readily available aromatics in such reactions, especially in an asymmetric manner, remains underexplored. Herein, we report a highly regio- and enantioselective dearomative ...

5 天之前 · This study analyzes greenhouse gas (GHG) emissions (carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O)) from 108 countries (1990–2020) using k-means clustering with a Dynamic Time Warping (DTW) metric, identifying high, medium, and low emission clusters based on total and per capita emissions. CO2, driven by fossil fuel use in energy, industry, and transportation, dominates ...

2024年9月23日 · We developed an MEA electrolyzer that utilizes X-ray absorption spectroscopy to investigate the structural evolution of Cu2O-derived catalysts under CO2R and compare the same catalysts in a flow cell. Additionally, we study the influence of CO reduction and incorporating Ag on the reconstruction of the catalyst.

To expand the analogy to chemical synthesis, we propose the processes to be “near Net Zero”, and all the parameters should be renewable and recyclable and result in zero effluents.