相关实验视频

Updated: May 15, 2025

Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy

Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy

Published on: February 20, 2020

在不对称的Bi─O_v─In MotifsDomino-Direct高效尿素电合成上定制的挫败的易斯对

Zhengyi Li¹, Yan Zhang², Hu Li¹

¹State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|May 14, 2025

概括

本研究提出了一种新的电合成策略,用于从废酸盐和二氧化碳中生产绿色尿素. 对双化In2O3的多米诺效应实现了高选择性和产量,克服了以前在尿素合成中的挑战.

科学领域:

电化学电化学电化学
催化剂是一种催化剂.
绿色化学绿色化学

背景情况:

从废酸盐和二氧化碳中合成尿素是可取的,但受选择性问题阻碍.
热力学和动力学挑战阻碍了多步转换过程.

研究的目的:

开发一种高度选择性的尿素生产电合成策略.
为了解决酸盐和二氧化碳联合电解中的动力学不匹配和热力学差异.

主要方法:

使用面向多米诺效应的电合成策略.
使用二氧化的In2O3与不对称的氧气空缺 (Ov).
在现场利用衍生*NH2中间体,形成表面丧的易斯对 (SFLP).

主要成果:

取得了前所未有的尿素法拉迪克效率80.2%.
获得了令人印象深刻的尿素产量,即2.38 × 10^3 μg h^-1 mg_cat.^-1 在 -0.4 V 和 RHE.
通过SFLP证明了二氧化碳的协同吸附和激活.

结论:

多米诺策略有效地引导高选择性尿素合成的级联反应.
原子分散的Bi位点和不对称的Ov对于中间稳定和C-N合至关重要.
这种方法为控制电合成中的选择性提供了一条途径.

关键词:

二氧化碳利用率的使用情况不对称的氧气空缺位置.这是一个多米诺效应.固化的方法固化的方法尿素电合成尿素的电合成.

更多相关视频

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration

Published on: March 29, 2019

相关概念视频

VSEPR Theory and the Effect of Lone Pairs

VSEPR Theory and the Effect of Lone Pairs

Effect of Lone Pairs of Electrons on Molecule Geometry

Lewis Structures of Molecular Compounds and Polyatomic Ions

Lewis Structures of Molecular Compounds and Polyatomic Ions

To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:

Resonance

Resonance

The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.

Hybridization of Atomic Orbitals I

Hybridization of Atomic Orbitals I

The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...

Predicting Molecular Geometry

Predicting Molecular Geometry

VSEPR Theory for Determination of Electron Pair Geometries

Resonance and Hybrid Structures

Resonance and Hybrid Structures

According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.