吸附动力学和粘土扩散:对的地质储存和天然勘探的影响
Qian Zhang1, Jiguang Wang1, Lunxiang Zhang2
1Key Laboratory of Ocean Energy Utilization and Energy Conservation of the Ministry of Education, Dalian University of Technology, Dalian 116024, China.
Journal of colloid and interface science
|July 18, 2025
概括
粘土矿物质对于地下 (H2) 储存至关重要. 石的H2吸附和扩散率高于蒙莫里隆石,表明其在地质H2应用中的潜力.
科学领域:
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
- 能源科学 能源科学
背景情况:
- (H2) 储存对于能源转型和缓解气候变化至关重要.
- 了解H2的地下行为对于地下储存和勘探等应用至关重要.
- 储水池和岩中的粘土矿物质显著影响H2吸附和扩散.
研究的目的:
- 为了研究粘土矿物质 (蒙莫里隆石和石) 中的吸附和扩散.
- 在不同温度和压力下建模H2吸附平衡和动力学.
- 评估不同吸附和动力学模型对H2粘土相互作用的适用性.
主要方法:
- 在蒙特莫里隆石和石上进行了H2异热吸附和动力实验.
- 测试条件: 30°C,40°C,50°C和0-9.8 MPa压力范围.
- 应用了Langmuir,Freundlich,BET,DA,伪第一阶,伪第二阶,Bangham,以及拉伸指数模型.
主要成果:
- 布鲁纳uer-Emmett-Teller (BET) 模型最适合于H2吸附等热体.
- 班哈姆运动模型准确地预测了压力阶段的实验动力学.
- 在 sepiolite 中,H2 的吸附能力和扩散率比在 montmorillonite 中更高.
- 温度和压力的增加降低了班哈姆吸附率常数.
- 粘土矿物中的H2扩散系数随着压力增加而下降.
结论:
- 与蒙特莫里隆石相比,石具有更高的H2吸附能力和扩散特性.
- BET和Bangham模型有效地描述了粘土矿物中的H2吸附和动力学.
- 这些发现凸显了 sepiolite 在地质构成中增强 H2 运输和运输的潜力.
更多相关视频
14:11Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
Published on: March 29, 2016
26.9K
09:46Protocol for Measuring the Thermal Properties of a Supercooled Synthetic Sand-water-gas-methane Hydrate Sample
Published on: March 21, 2016
9.0K
相关概念视频
02:13Reduction of Alkenes: Catalytic Hydrogenation
12.6K
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...
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...
12.6K
02:19Physical Properties Affecting Solubility
23.5K
Solutions of Gases in Liquids
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
23.5K
01:09Analyte Adsorption and Distribution
867
In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...
867
01:04Hydrogen Bonds
10.6K
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...
10.6K
02:05Entropy and Solvation
7.2K
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...
7.2K
02:14SN2 Reaction: Kinetics
8.8K
Kinetic Studies and Significance
In a chemical reaction, a relationship exists between the concentration of reactants and the rate at which the reaction proceeds. The study to measure this relationship is known as the kinetics of a chemical reaction. Kinetic studies are used to deduce the rate law of a chemical reaction, which provides information about the species involved during the transition state of the rate-determining step. Thus, kinetic studies help to derive the mechanism of a...
In a chemical reaction, a relationship exists between the concentration of reactants and the rate at which the reaction proceeds. The study to measure this relationship is known as the kinetics of a chemical reaction. Kinetic studies are used to deduce the rate law of a chemical reaction, which provides information about the species involved during the transition state of the rate-determining step. Thus, kinetic studies help to derive the mechanism of a...
8.8K