1、Thionyl Chloride

This paper focuses on exploring the performance characteristics of thionyl chloride-modified adsorption resins and their significance in practical applications.

2、Adsorption of perchlorate on different quaternary ammonium

The modified mesoporous resins had better ClO 4− adsorption characteristics than gel resin, including adsorption capacity, adsorption rate, resistance the influence of coexisting ions and regeneration performance.

3、A new chloromethylation method based on polystyrene–divinylbenzene

In this work, we try to synthesize Cl-PS–DVB using methylal, trioxane and thionyl chloride as reactants under the catalysis of Lewis acid. The mechanism of chloromethylation on PS–DVB was discussed and the reaction condition optimized for potential application in industry.

Adsorption of Ni (II) and Cu (II) by Thionyl Chloride and Ethylene

This study describes the preparation of a new adsorbent for heavy metal ions removal derived from coir fibres. Coir fibres was activated by using thionyl chloride and reacted with ethylene- 1,2-diamine in order to obtain modified coir fibres.

Thionyl Chloride Facilitated Polymerization of Xanthan Gum

The present report divulges that thionyl chloride facilitated cationic polymerization is a promising protocol for the preparation of vinyl monomers based XG grafted Copolymers which can serve as an effectual adsorbent for the environmental remediation.

Walnut Shell Modified by Thionyl Chloride and Triethylamine: Synthesis

A novel modified walnut shell (TWNS) was prepared through sequentially reacting the walnut shell (WNS) with thionyl chloride and triethylamine in N-methyl pyrrolidone to remove Reactive Brilliant Blue from dye wastewater.

An efficient method for activation and recycling of trityl resins

The used resin (10 g) was washed once with DMF (100 ml) and three times with dry methylene chloride (100 ml) and subsequently treated with thionyl chloride (1.7 ml) in methylene chloride (100 ml).

Development of the method of polystyrene chloromethylation using the

A new method for the preparation of poly (chloromethylstyrene) by synthesis in a gel via treating of linear polystyrene with cyclic formals in thionyl chloride has been developed. The method...

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In this work, a new adsorbent was obtained by modifying coir fibres with thionyl chloride and ethylene-1,2-diamine in sequence. As an evaluation, the adsorption studies of Ni2+ and Cu2+ ions by modified coir fibres and coir fibres were carried out at different contact times, pHs and initial metal ion concen-trations.

Thionyl Chloride Facilitated Polymerization of Xanthan Gum Grafted

The synthesized grafted Copolymers showed the appreciable adsorption capability towards synthetic dyes. The XAAM showed the 99% and 97% adsorption for cationic malachite green (MG) and anionic solochrome black T (SBT) with 119.27 mg/g and 122.67 mg/g adsorption capacity respectively.

In modern industry, adsorption technology is widely utilized as an effective method for material separation and purification across fields such as chemical engineering, environmental protection, and pharmaceuticals. As the primary material for adsorbents, the performance of adsorption resins directly impacts the efficiency and effectiveness of the adsorption process. This paper focuses on exploring the performance characteristics of thionyl chloride-modified adsorption resins and their significance in practical applications.

I. Preparation Methods for Thionyl Chloride-Modified Adsorption Resins

The preparation of thionyl chloride-modified adsorption resins typically involves the following key steps:

1. Selection of monomers and crosslinking agents: Polymerization reactions are used to synthesize high-molecular-weight adsorption resins with specific functional properties.
2. Surface modification: The resins undergo surface treatments, such as introducing specific functional groups or incorporating new functional moieties through chemical reactions, to enhance adsorption performance.
3. Post-treatment processes: Final products are obtained via appropriate post-processing steps, including drying, grinding, and other refinement techniques.

II. Performance Characteristics of Thionyl Chloride-Modified Adsorption Resins

1. High Adsorption Capacity: These resins exhibit excellent adsorption capacities for various pollutants, including organic compounds, inorganic substances, and heavy metal ions. This makes them highly promising for applications in water treatment and wastewater purification.

2. Selectivity and Regenerability: Thionyl chloride-modified resins demonstrate strong selectivity for target substances. Their stable structure ensures minimal degradation, enabling repeated regeneration and reuse, which reduces operational costs.

3. Thermal and Chemical Stability: The resins maintain robust adsorption performance under harsh conditions (e.g., high temperatures, pressures), making them valuable in industries such as petroleum and natural gas.

4. Environmental Friendliness: The adsorption process does not introduce secondary contaminants, and the resins are recyclable, aligning with sustainable environmental practices.

III. Application Fields of Thionyl Chloride-Modified Adsorption Resins

1. Water Treatment: Widely used for drinking water purification, industrial wastewater treatment, and municipal sewage filtration. They effectively remove contaminants, improving water quality and safeguarding public health.

2. Gas Adsorption: Applied in hydrogen purification, carbon dioxide removal, and other gas-phase adsorption processes. These applications enhance energy efficiency and reduce environmental pollution.

3. Catalyst Support: Due to their catalytic properties, these resins serve as carriers for catalysts, improving activity and selectivity in petrochemical and pharmaceutical industries.

Thionyl chloride-modified adsorption resins offer advantages such as high adsorption capacity, selectivity, regenerability, thermal/chemical stability, and environmental compatibility. These traits position them as highly promising materials in water treatment, gas adsorption, and catalysis. With advancements in technology and stricter environmental regulations, research and application of these resins will garner increasing attention.