相关实验视频

Updated: Jul 19, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Rh-分散 Cu 纳米线催化剂,用于促进 5-氧甲基的电催化化

Wenfei Zhang¹, Yanbin Qi², Yuan Zhao³

¹Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.

Science bulletin

|August 14, 2023

概括

研究人员开发了一种-铜催化剂 (RhCu NWs),以有效地将生物质衍生的5-甲基 (HMF) 转化为使用可再生能源的2,5-bis-甲基 (BHMF).

科学领域:

绿色化学绿色化学
电触媒溶解是一种电触媒.
生物质转换生物质转换

背景情况:

5-基甲基 (HMF) 是一种主要的生物质衍生平台化学物质.
有效和选择性地将HMF转化为增值产品,如2,5-bis ((hydroxymethyl) furan (BHMF) 是一个挑战.
电催化为生物质利用提供了一条可持续的途径.

研究的目的:

设计一种催化剂,增强选择性电催化降低HMF到BHMF.
研究催化剂设计在调节活性 (H_ads) 生产中的作用.
从HMF提高BHMF生产的效率和选择性.

主要方法:

在铜 (Cu) 纳米线 (RhCu NWs) 催化剂上制造 (Rh) 纳米颗粒.
在 -20 mA cm^-2的电催化降低HMF到BHMF.
动力调查,电子自旋共振 (ESR) 光谱,以及在位减弱总反射表面增强红外吸收光谱 (ATR-SEIRAS).

主要成果:

在BHMF生产中实现了92.6%的高法拉达效率 (FE).
在8个周期内,证明了催化剂稳定性,没有性能退化.
加入Rh加速了水分离和H的产生,创造了一个H丰富的接口.
抑制了不需要的HMF二极管的形成.

结论:

该RhCu NWs催化剂有效地促进了选择性的HMF电还原到BHMF.
调节界面水环境和H_ads生产对于高效的电合成至关重要.
改变界面水环境是提高生物质衍生产品合成的有希望的策略.

关键词:

生物质是生物质中的一部分.电触媒溶解是一种电触媒.在化过程中,化增值产品是一种产品.水分离是指水分离的过程.

更多相关视频

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Published on: August 17, 2019

相关概念视频

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...