Development of phase-change absorbent for hydrogen chloride with hydrogen and chlorine generation by electrolysis

Liu, Fen; Zhang, Jingcong; Bai, Wenxuan; Chen, Jinxiang; Gu, Zhiping; Yu, Jiang

doi:10.1016/j.cej.2023.142482

Cited by 6 publications

(2 citation statements)

References 47 publications

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“…Almost 50% of chemical processes involve chlorine, while 50% of the used chlorine is discharged in forms of side products like hydrogen chloride or chloride salts. , Thus, sustainable chlorine recycling becomes crucial for clean production in the chemical industry. To recycle chlorine from HCl, quite a few electrochemical processes has been developed. − For example, the reaction kinetics were well established for deep understanding of catalytic oxidation of HCl , ; a phase change absorbent (MDEA/NHD) was developed for HCl absorption to produce hydrogen and chlorine by electrolysis . However, as the generation of HCl is unavoidable in traditional chlorination processes, the recycling system requires intensive energy input and results in great emissions …”

Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis of Aryl Chlorides Using HCl as the Chlorine Source

Shen,

Xu,

Jiang

et al. 2024

ACS Sustainable Chem. Eng.

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Hydrochloric acid (HCl) is abundantly generated as the byproduct in the chemical industry. The recycling of chloride from HCl is related to intensive energy input and resource consumption. European Commission Joint Research Centre stated that the production and utilization of chlorine are indicative of the development level of the chemical industry. To utilize HCl in a green way, an unprecedented, straightforward, and simple electrosynthesis method has been employed to produce chlorinated aromatics. The control experiments indicated that the reaction underwent a free radical pathway and that the mass transfer was crucial for the reaction. Further, a microchannel flow electroreactor was further used to scale up the reaction. To overcome the hydrophobic obstacle of the graphite electrode surface, a hydrophilic modification method with nitric acid was used. After the modification, the content of the O element of the graphite increased from 1.1 to 2.3%, the C−O−C unit increased from 10.9 to 16.2%, and the O−C�O unit increased from 27.1 to 28.2%. Thus, the desired product was afforded with satisfactory yields under the modified electrode.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis of Aryl Chlorides Using HCl as the Chlorine Source

Shen,

Xu,

Jiang

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…The growth of chlorine-based products has shown an exponential increase in the utilization of chlorine for the formation of various commodity chemicals such as polyvinyl chloride (PVC), organic and inorganic chemicals, isocyanates, and pulp and paper. [4][5][6] However, chlorine production is a high energy consuming process, which is directly related to the cost of chlorine-based products. The production of chlorine is mainly dependent on chlor-alkali industry where each ton of Cl 2 production requires 2.1-3.0 MW h of electricity, resulting into 51-58% of total production cost.…”

Section: Introductionmentioning

confidence: 99%