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相关概念视频

Ion Exchange01:17

Ion Exchange

1.4K
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
1.4K
Hydrolysis of Chlorobenzene to Phenol: Dow Process01:10

Hydrolysis of Chlorobenzene to Phenol: Dow Process

4.2K
Simple aryl halides do not react with nucleophiles under normal conditions. However, the reaction can proceed under drastic conditions involving high temperatures and high pressure to give the substituted products. For example, chlorobenzene is converted to phenol using aqueous sodium hydroxide at 350 °C under high pressure by the Dow process. The reaction follows an elimination-addition mechanism involving a benzyne intermediate. Here, the chloride ion is...
4.2K
Physical Properties of Alcohols and Phenols02:32

Physical Properties of Alcohols and Phenols

17.2K
Alcohols are organic compounds in which a hydroxy group is attached to a saturated carbon. Phenols are a class of alcohols containing a hydroxy group attached to an aromatic ring. The physical properties of the alcohols and phenols are influenced by hydrogen bonding due to the oxygen–hydrogen dipole in the hydroxy functional group and dispersion forces between alkyl or aryl regions of alcohol and phenol molecules.
Alcohols possess a higher boiling point than aliphatic hydrocarbons of similar...
17.2K
Acidity and Basicity of Alcohols and Phenols02:36

Acidity and Basicity of Alcohols and Phenols

22.6K
Like water, alcohols are weak acids and bases. This is attributed to the polarization of the O–H bond making the hydrogen partially positive. Moreover, the electron pairs on the oxygen atom of alcohol make it both basic and nucleophilic. Protonation of an alcohol converts hydroxide, a poor leaving group, into water—a good one. The two acid–base equilibria corresponding to ethanol are depicted below.
22.6K

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相关实验视频

Updated: Mar 9, 2026

Extraction of Lignin with High β-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield
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素功能化超交联聚合物用于从水溶液中去除.

Xiaoru Xie1, Manying Li1, Dexuan Xiang2

  • 1College of Chemistry and Materials, Huaihua University, Huaihua, 418000, PR China.

International journal of biological macromolecules
|March 7, 2026
PubMed
概括

研究人员开发了素功能化的超交联聚合物 (HCP) 来有效地从废水中去除. 这些新型吸附剂表现出高容量和可重复使用性,为净化水提供了环保的解决方案.

关键词:
弗里德尔 - 工艺化化超交叉连接的聚合物.在Lignin的基础上.醇吸附方式 醇吸附方式

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相关实验视频

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科学领域:

  • 材料科学 材料科学 材料科学
  • 环境化学环境化学
  • 聚合物化学 聚合物化学

背景情况:

  • 水中的污染对环境和健康构成重大风险.
  • 开发有效和可持续的吸附剂来去除对于废水处理至关重要.

研究的目的:

  • 为了合成和表征素功能化的超交联聚合物 (HCPs-Fe和HCPs-Al) 以有效的吸附.
  • 评估开发材料的吸附性能,动力学,热力学和可重复使用性.

主要方法:

  • 在甲基化聚钢上进行红素接种,随后进行Friedel-Crafts化.
  • 使用FT-IR,XPS,XRD,TGA,SEM,TEM和N2吸附-脱附的特性.
  • 吸附实验,动力学,异热学和热力学研究以及再生试验.

主要成果:

  • HCPs-Fe和HCPs-Al表现出具有高表面积 (421 m2/g和215 m2/g) 的层次性多孔性.
  • 吸附能力达到172.8 mg/g (HCPs-Fe) 和135.3 mg/g (HCPs-Al) 在293 K.
  • 吸附遵循伪二次动力学和弗洛伊德利希异热模型,表明外热吸附.
  • 在5个再生周期后,HCPs-Fe保持了90.8%的容量.

结论:

  • 素功能化HCP是有效的,可重复使用的吸附剂,用于从水性介质中去除.
  • 结合,π-π堆叠和微孔填充的协同效应有助于高吸附能力.
  • 这种方法提供了一种可持续和环保的解决方案,用于处理受污染的废水.