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相关概念视频

Analyte Adsorption and Distribution01:09

Analyte Adsorption and Distribution

597
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...
597
Extraction: Partition and Distribution Coefficients01:14

Extraction: Partition and Distribution Coefficients

1.7K
The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an...
1.7K
Arrhenius Plots02:34

Arrhenius Plots

38.5K
The Arrhenius equation relates the activation energy and the rate constant, k, for chemical reactions. In the Arrhenius equation, k = Ae−Ea/RT, R is the ideal gas constant, which has a value of 8.314 J/mol·K, T is the temperature on the kelvin scale, Ea is the activation energy in J/mole, e is the constant 2.7183, and A is a constant called the frequency factor, which is related to the frequency of collisions and the orientation of the reacting molecules.
The Arrhenius equation can be used...
38.5K
Calculating Equilibrium Concentrations02:05

Calculating Equilibrium Concentrations

47.4K
Being able to calculate equilibrium concentrations is essential to many areas of science and technology—for example, in the formulation and dosing of pharmaceutical products. After a drug is ingested or injected, it is typically involved in several chemical equilibria that affect its ultimate concentration in the body system of interest. Knowledge of the quantitative aspects of these equilibria is required to compute a dosage amount that will solicit the desired therapeutic effect.
A more...
47.4K
The Equilibrium Binding Constant and Binding Strength02:18

The Equilibrium Binding Constant and Binding Strength

12.8K
The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
12.8K
Calculating the Equilibrium Constant02:46

Calculating the Equilibrium Constant

30.8K
The equilibrium constant for a reaction is calculated from the equilibrium concentrations (or pressures) of its reactants and products. If these concentrations are known, the calculation simply involves their substitution into the Kc expression.
For example, gaseous nitrogen dioxide forms dinitrogen tetroxide according to this equation:
30.8K

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相关实验视频

Updated: Jun 1, 2025

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method
09:43

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method

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介绍两个组件的竞争性吸附同热量数据的吸附能量分布计算.

Abdul Haseeb1, Yosief Wondmagegne2, Miguel X Fernandes1

  • 1Department of Engineering and Chemical Sciences, Karlstad University, SE-651 88 Karlstad, Sweden.

Analytical chemistry
|January 21, 2025
PubMed
概括
此摘要是机器生成的。

本研究引入了一种新方法来计算两个组件系统的吸附能量分布 (AED). 这种方法可视化了竞争性吸附,有助于选择精确的染色学模型.

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Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
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Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

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Monitoring Protein Adsorption with Solid-state Nanopores
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Monitoring Protein Adsorption with Solid-state Nanopores

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相关实验视频

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Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
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科学领域:

  • 物理化学 物理化学
  • 化学工程是化学工程的重要组成部分.
  • 分析化学 分析化学

背景情况:

  • 吸附能量分布 (AED) 是理解吸附过程的关键.
  • 当前的方法经常与多组件系统相斗争.
  • 精确的建模对于色谱优化至关重要.

研究的目的:

  • 开发一种新的方法来计算两个组件的同时AED.
  • 提供对竞争性吸附机制的见解.
  • 在不假定异质性的情况下提供替代的吸附异热模型.

主要方法:

  • 使用竞争性吸附异热数据进行AED计算.
  • 开发了一个由两个组件组成的AED模型.
  • 在合成和实验数据上测试了模型.

主要成果:

  • 成功启用了两个组件的同时AED计算.
  • 展示了竞争性吸附过程的可视化.
  • 展示了该模型在协助吸附模型选择方面的有效性.

结论:

  • 两组件的AED是理解多组件相互作用的强大工具.
  • 这种方法增强了准备性色谱的机械建模.
  • 这种方法提供了一个可行的替代传统的异热模型.