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Updated: Jun 12, 2025

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand
08:01

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand

Published on: September 8, 2016

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通过改性离子交换树脂从脱硫离子液中去除离子的过程和机制的研究

Guibin Wang1, Lijuan Liu1, Yanlong He1

  • 1School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China.

ACS omega
|June 9, 2025
PubMed
概括

改性717树脂有效地从脱硫中使用的离子液体中去除离子 (Cl-) . 这种树脂具有良好的可再生性,为改善脱硫性能和减少设备腐蚀提供了有前途的解决方案.

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Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone08:06

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Ion Exchange01:17

Ion Exchange

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Carboxylic Acids to Acid Chlorides

Carboxylic acids react with SOCl2 or PCl5 to form acid chlorides. Amongst the carboxylic acid derivatives, acid chlorides are the most reactive and synthetically important derivatives. They are useful reagents for Friedel–Crafts acylation of some aromatic compounds.
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Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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