Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

10.7K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
10.7K
Catalysis02:50

Catalysis

27.4K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
27.4K
Radical Formation: Homolysis00:54

Radical Formation: Homolysis

3.7K
A bond is formed between two atoms by sharing two electrons. When this bond is broken by supplying sufficient energy, either two electrons can be taken up by one atom forming ions by the cleavage called heterolysis, or the two electrons are shared by two atoms, with one each creating radicals by the cleavage called homolysis.
3.7K
Limiting Reactant02:27

Limiting Reactant

59.8K
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in reality, the reactants are not always present in the stoichiometric amounts indicated by the balanced equation.
59.8K
Preparation of Alcohols via Addition Reactions02:15

Preparation of Alcohols via Addition Reactions

6.4K
Overview
The acid-catalyzed addition of water to the double bond of alkenes is a large-scale industrial method used to synthesize low-molecular-weight alcohols. An acidic atmosphere is required to allow the hydrogen in the water molecule to act as an electrophile and attack the double bond in an alkene. The addition of a proton to the double bond creates a carbocation intermediate. The proton preferentially bonds to the less substituted end of the double bond to create a more stable carbocation...
6.4K
Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis02:29

Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis

10.9K
Overview
Ethers can be prepared from organic compounds by various methods. Some of them are discussed below,
Preparation of Ethers by Alcohol Dehydration
In this method, in the presence of protic acids, alcohol dehydrates to produce alkenes and ethers under different conditions. For example, in the presence of sulphuric acid, dehydration of ethanol at 413 K yields ethoxyethane, whereas it yields ethene at 443 K.
10.9K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

High-Precision MEMS Resonant Pressure Sensor for Real-Time Barometric Monitoring.

Micromachines·2026
Same author

Global meta-analysis of neonicotinoid degradation in agricultural systems: Influence of environmental media and biological treatment strategies.

Journal of environmental management·2026
Same author

Molecular mechanisms of dissolved organic matter transformation and microbial interactions in composting.

Bioresource technology·2026
Same author

Accelerated Emergence of Self-Driving Laboratories for Accelerating Materials Discovery.

ACS central science·2026
Same author

Influence of alteration of foot progression angle on three-dimensional pelvic kinematics in individuals with knee osteoarthritis during walking: A randomized crossover study.

Medicine·2026
Same author

Electrochemical Loading of Palladium with Hydrogen Is Governed by Ambient Gas Species.

Journal of the American Chemical Society·2026

Video Experimental Relacionado

Updated: Sep 2, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.5K

Síntesis directa de H2O sin gas H2

Aoxue Huang1, Roxanna S Delima2,3, Yongwook Kim1

  • 1Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada.

Journal of the American Chemical Society
|August 2, 2022
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio introduce un nuevo método para la síntesis directa de peróxido de hidrógeno (H2O2) a partir de agua y oxígeno utilizando un reactor de membrana. Este proceso impulsado electroquímicamente evita la necesidad de gas de hidrógeno, mejorando la seguridad y la eficiencia.

Más Videos Relacionados

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

3.2K
An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation
08:36

An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation

Published on: November 3, 2016

10.1K

Videos de Experimentos Relacionados

Last Updated: Sep 2, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.5K
Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

3.2K
An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation
08:36

An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation

Published on: November 3, 2016

10.1K

Área de la Ciencia:

  • La electroquímica
  • Catálisis
  • Ingeniería Química

Sus antecedentes:

  • Los métodos tradicionales de producción de peróxido de hidrógeno (H2O2) consumen mucha energía y implican productos intermedios peligrosos.
  • Se necesitan vías de síntesis de H2O2 más seguras, eficientes y sostenibles.

Objetivo del estudio:

  • Desarrollar una síntesis electroquímica directa de H2O2 a partir de agua y oxígeno.
  • Investigar el uso de un reactor de membrana para la producción de H2O2 sin gas H2 externo.
  • Optimizar las condiciones de reacción y el diseño del catalizador para mejorar el rendimiento de H2O2.

Principales métodos:

  • Se utilizó un reactor de membrana con una lámina de paladio (Pd) permeable al hidrógeno.
  • Atomos de hidrógeno reactivos generados por electrólisis del agua en una cámara.
  • Facilitó la reacción de los átomos de H con O2 en una cámara separada para formar H2O2.
  • Se ha optimizado la relación metanol/agua y se han empleado catalizadores de aleación AuPd.

Principales resultados:

  • Se logró un aumento de aproximadamente 8 veces en la concentración de H2O2 (de 56,5 a 443 mg/L).
  • Se ha demostrado que la concentración de H2O2 es muy sensible a su velocidad de descomposición.
  • Los catalizadores de aleación AuPd identificados como eficaces para reducir al mínimo la descomposición de H2O2 en comparación con el Pd puro.

Conclusiones:

  • Se presentó una nueva vía para la síntesis directa de H2O2 utilizando la electrólisis del agua.
  • Produjo con éxito H2O2 sin el uso de gas H2, ofreciendo una alternativa más segura.
  • Destacó la importancia del diseño del catalizador y la optimización de los parámetros de reacción para una producción eficiente de H2O2.