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Related Concept Videos

A Single-Component System01:24

A Single-Component System

In the field of chemistry, the terms "component" and "phase" hold significant importance. A component refers to a chemically distinct substance in a system that has specific properties. It is chemically homogeneous, meaning it has the same properties throughout. For example, in a mixture of salt and water, both salt and water are considered separate components because they have different chemical properties.On the other hand, a phase is a form of matter that has a consistent chemical...
Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...
Hydrogen Bonds00:26

Hydrogen Bonds

Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared.
Hydrogen Bonds01:04

Hydrogen Bonds

A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the surface of...
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride01:26

Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride

Radical substitution reactions can be used to remove functional groups from molecules. The hydrogenolysis of alkyl halides is one such reaction, where the weak Sn–H bond in tributyltin hydride reacts with alkyl halides to form alkanes. Here, the reagent Bu3SnH yields tributyltin halide as a byproduct.
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation reactions,...

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Updated: May 27, 2026

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

A single-component liquid-phase hydrogen storage material.

Wei Luo1, Patrick G Campbell, Lev N Zakharov

  • 1Department of Chemistry, University of Oregon, Eugene, Oregon 97403-1253, USA.

Journal of the American Chemical Society
|November 11, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel liquid-phase hydrogen storage material. This recyclable material offers a stable, efficient, and cost-effective alternative to compressed hydrogen gas.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Energy Storage

Background:

  • Current hydrogen storage relies on compressed gas (700 bar), limiting infrastructure compatibility.
  • Liquid-based hydrogen storage could leverage existing distribution networks.
  • Developing stable, recyclable liquid hydrogen carriers is crucial for widespread adoption.

Purpose of the Study:

  • To introduce a novel liquid-phase hydrogen storage material.
  • To evaluate its properties for practical hydrogen energy applications.
  • To demonstrate its potential as an alternative to compressed hydrogen gas.

Main Methods:

  • Characterization of a liquid material stable at ambient conditions (20 °C, 1 atm).
  • Assessment of air and moisture stability and recyclability.
  • Evaluation of controlled hydrogen release using abundant catalysts below 80 °C.

Main Results:

  • The material is liquid under ambient conditions, air- and moisture-stable, and recyclable.
  • Controlled hydrogen release occurs below 80 °C using inexpensive catalysts.
  • The material exhibits reasonable gravimetric and volumetric storage capacity without phase change during desorption.

Conclusions:

  • This liquid-phase hydrogen storage material presents a viable alternative to compressed hydrogen.
  • Its properties align with existing liquid-based infrastructure and fuel cell requirements.
  • The material offers a promising pathway for efficient and cost-effective hydrogen energy storage and distribution.