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関連する概念動画

Entropy and Solvation02:05

Entropy and Solvation

8.6K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
8.6K
Solubility03:00

Solubility

21.4K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
21.4K
Enthalpy of Solution02:39

Enthalpy of Solution

31.4K
There are two criteria that favor, but do not guarantee, the spontaneous formation of a solution:
31.4K
Hydrogen Bonds01:04

Hydrogen Bonds

15.4K
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...
15.4K
Hydrogen Bonds00:26

Hydrogen Bonds

135.4K
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....
135.4K
Aqueous Solutions and Heats of Hydration02:42

Aqueous Solutions and Heats of Hydration

18.4K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
18.4K

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関連する実験動画

Updated: Feb 24, 2026

Experimental Study of the Relationship Between Particle Size and Methane Sorption Capacity in Shale
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Experimental Study of the Relationship Between Particle Size and Methane Sorption Capacity in Shale

Published on: August 2, 2018

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天然岩石における水素吸脱着の再訪

Mohammad Masoudi1,2, Ariel G Meyra3,4, Mohammad Nooraiepour2

  • 1Applied Geoscience Department, SINTEF Industry, 7465 Trondheim, Norway.

Industrial & engineering chemistry research
|February 23, 2026
PubMed
まとめ

岩石における水素の吸脱着は、地下応用において重要である。本レビューは、水素の挙動と地質貯留および輸送への影響を明らかにするための研究を統合する。

キーワード:
水素吸着岩石地下貯蔵地質

さらに関連する動画

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

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In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
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In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework

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関連する実験動画

Last Updated: Feb 24, 2026

Experimental Study of the Relationship Between Particle Size and Methane Sorption Capacity in Shale
07:23

Experimental Study of the Relationship Between Particle Size and Methane Sorption Capacity in Shale

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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
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In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
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In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework

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科学分野:

  • 地球化学
  • 環境科学
  • エネルギー科学

背景:

  • 岩石における水素の吸脱着は、地下エネルギーおよび環境応用にとって重要である。
  • これらの相互作用を理解することは、地下水素貯蔵や放射性廃棄物封じ込めなどの応用にとって不可欠である。
  • 地質材料におけるこれらの物理的相互作用が水素の挙動にどのように影響するかについての現在の知識は限られている。

研究 の 目的:

  • 天然岩石における水素の吸脱着に関する実験的研究および理論的研究をレビューすること。
  • 岩相による吸着容量、影響パラメータ、ヒステリシスを評価すること。
  • 水素吸着データの適合性が最も高い等温線モデルを特定すること。

主な方法:

  • 実験的研究および理論的研究の文献レビュー。
  • 原子シミュレーションおよび等温線モデリング。
  • 吸着容量、影響パラメータ、ヒステリシスのデータ分析。
  • 複数の等温線モデルを使用した利用可能なデータのモデリング。

主要な成果:

  • 岩石の種類（岩相）によって吸着容量は大きく異なる。
  • 吸着と脱着、およびヒステリシスに影響を与える主要なパラメータを特定した。
  • 水素吸着データを記述するのに最も適した等温線モデルを特定した。
  • 物理吸着・脱着が重要である場合と無視できる場合の状態を詳述した。

結論:

  • 物理吸着・脱着は、特定の地質環境における水素の輸送と保持に重要な役割を果たす。
  • これらのプロセスを理解することは、効果的な水素貯蔵、探査、廃棄物封じ込めにとって不可欠である。
  • 地質層における水素の挙動の理解を改善するためのデータギャップを特定し、将来の研究の方向性を提案した。