Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Preparation of Amines: Alkylation of Ammonia and Amines

Preparation of Amines: Alkylation of Ammonia and Amines

Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation.
Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...

Dehydration Synthesis

Dehydration Synthesis

Overview
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.
Synthesis of carbohydrates
Sugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from...

Synthesis and Decomposition Reactions

Synthesis and Decomposition Reactions

Synthesis and decomposition are two types of redox reactions. Synthesis means to make something, whereas decomposition means to break something. The reactions are accompanied by chemical and energy changes.

Lagging Strand Synthesis

Lagging Strand Synthesis

During replication, the complementary strands in double-stranded DNA are synthesized at different rates. Replication first begins on the leading strand. Replication starts later, occurs more slowly, and proceeds discontinuously on the lagging strand.
There are several major differences between synthesis of the leading strand and synthesis of the lagging strand. 1) Leading strand synthesis happens in the direction of replication fork opening, whereas lagging strand synthesis happens in the...

Lagging Strand Synthesis

Lagging Strand Synthesis

Reduction of Alkynes to trans-Alkenes: Sodium in Liquid Ammonia

Reduction of Alkynes to trans-Alkenes: Sodium in Liquid Ammonia

Alkynes can be reduced to trans-alkenes using sodium or lithium in liquid ammonia. The reaction, known as dissolving metal reduction, proceeds with an anti addition of hydrogen across the carbon–carbon triple bond to form the trans product. Since ammonia exists as a gas (bp = −33°C) at room temperature, the reaction is carried out at low temperatures using a mixture of dry ice (sublimes at −78°C) and acetone.
When dissolved in liquid ammonia, an alkali metal, such as sodium,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Creation of an air-stable surface electrene and its application to ammonia synthesis.

Nature communications·2026

Same author

Active-Metal-Rich Intermetallics as a Platform for Tiered Interstitial Electronic States.

Advanced materials (Deerfield Beach, Fla.)·2026

Same author

Electron-rich dianion vacancies boost diazenide intermediates for efficient chemical looping ammonia synthesis.

Nature communications·2026

Same author

Hydrophobic Microenvironment on Cu-Co Oxides for Dual Promotion of Mass Transfer and Electronic Regulation in Alkyl Aromatic Oxidation.

Inorganic chemistry·2026

Same author

Constructing Intermediate Encapsulation on Ru/CeO<sub>2</sub> Nanocatalysts to Enhance Ammonia Synthesis.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same author

Ce/Gd Co-doping in NiFe LDH engineered oxygen vacancies for enhanced oxygen evolution.

Chemical communications (Cambridge, England)·2026

Search research articles

Related Experiment Video

Updated: Feb 2, 2026

Ammonia Synthesis at Low Pressure

Ammonia Synthesis at Low Pressure

Published on: August 23, 2017

Intermetallic Electride Catalyst as a Platform for Ammonia Synthesis.

Jiazhen Wu¹, Jiang Li¹, Yutong Gong¹

¹Materials Research Center for Element Strategy, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan.

Angewandte Chemie (International Ed. in English)

|November 23, 2018

Summary

New intermetallic electrides like LaRuSi show superior performance for ammonia (NH3) synthesis. These materials overcome nanoparticle aggregation issues, offering a promising pathway for efficient catalytic ammonia production.

Keywords:

ammonia synthesis catalysis electrides hydride ions intermetallic compounds

More Related Videos

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Published on: July 18, 2017

HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin

HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin

Published on: July 23, 2016

Related Experiment Videos

Last Updated: Feb 2, 2026

Ammonia Synthesis at Low Pressure

Ammonia Synthesis at Low Pressure

Published on: August 23, 2017

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Published on: July 18, 2017

HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin

HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin

Published on: July 23, 2016

Area of Science:

Materials Science
Catalysis
Inorganic Chemistry

Background:

Electrides with transition-metal (TM) nanoparticles are promising for catalytic ammonia (NH3) synthesis.
Nanoparticle growth and aggregation are significant challenges for these materials.

Purpose of the Study:

To investigate TM-containing intermetallic electrides as single-phase catalysts for NH3 synthesis.
To demonstrate the catalytic advantages of LaRuSi as an intermetallic electride.

Main Methods:

Synthesis and characterization of isostructural compounds (LaRuSi, CaRuSi, LaRu2Si2).
Evaluation of catalytic activity for NH3 synthesis through synthesis rate measurements.
Investigation of reaction mechanisms using N2 isotope-exchange reactions.

Main Results:

LaRuSi exhibits superior activity for NH3 synthesis compared to isostructural analogs.
Direct evidence links electride-character to enhanced catalytic performance.
Lattice hydride ions are crucial for promoting NHx formation via reversible electron exchange.

Conclusions:

TM-containing intermetallic electrides offer a stable and active alternative for NH3 synthesis.
The mechanism highlights the indispensable role of lattice hydride ions and anionic electrons.
Findings provide new guidelines for designing advanced NH3 synthesis catalysts.