Home

Citation: Li Deqian, Tu Yuanzhen. ON THE MECHANISM OF EXTRACTION OF IRON(Ⅲ) FROM HYDROCHLORIC ACID SOLUTION BY 2-ETHYL-HEXYLPHOSPHONIC ACID MONO-2-ETHYLHEXYL ESTER[J]. Chinese Journal of Applied Chemistry, ;2016, 4(5): 15-19. shu

ON THE MECHANISM OF EXTRACTION OF IRON(Ⅲ) FROM HYDROCHLORIC ACID SOLUTION BY 2-ETHYL-HEXYLPHOSPHONIC ACID MONO-2-ETHYLHEXYL ESTER

Li Deqian ,
Tu Yuanzhen

1.
Chanchun Institute of Applied Chemistry, Academia Sinica

Received Date: 4 May 1986
Available Online: 24 October 1986

The partition equilibrium of Fe(Ⅲ) between HCl and HEH[EHP] in n-C₃H₁₃ has been investigated. The proposed mechanism of the extraction is as follows:At low aqueous acidity, Fe(Ⅲ) is extracted by a cation-exchange reaction:Fe³⁺+3(HL)₂₍₀₎???19870505-1???Fe(HL₂)₃₍₀₎+3H⁺ and at high aqueous acidity by a solvatiott reaction similar to that when TBP is used as exfracfanf:Fe³⁺+H⁺+4Cl^-+2.5(HL)₂₍₀₎???19870505-2???HFeCl₄·5HL₍₀₎ Meanwhile, HCl is extracted simutaneously:H⁺+Cl^-+mH₂O+1/2(HL)_2(o)???19870505-3???HCl·(mH₂O)·HL_(o) The extractiou mechattism when the organic phase is saturated by Fe(1) at low aqueous acidity is likely as folIows:Fe³⁺+Cl^-+1.5(HL)_2(o)???19870505-4???FeClL₂·HL_(o)+2H⁺ The equilibrium concentration constant (lgK₁=2.435) and the thermodynamical functions (△H°, △Z° and △S°) are obtained. The proposed mechanisms were supported by 1R spectral measurements., The partition equilibrium of Fe(Ⅲ) between HCl and HEH[EHP] in n-C₃H₁₃ has been investigated. The proposed mechanism of the extraction is as follows:At low aqueous acidity, Fe(Ⅲ) is extracted by a cation-exchange reaction:Fe³⁺+3(HL)₂₍₀₎Fe(HL₂)₃₍₀₎+3H⁺ and at high aqueous acidity by a solvatiott reaction similar to that when TBP is used as exfracfanf:Fe³⁺+H⁺+4Cl^-+2.5(HL)₂₍₀₎HFeCl₄·5HL₍₀₎ Meanwhile, HCl is extracted simutaneously:H⁺+Cl^-+mH₂O+1/2(HL)_2(o)HCl·(mH₂O)·HL_(o) The extractiou mechattism when the organic phase is saturated by Fe(1) at low aqueous acidity is likely as folIows:Fe³⁺+Cl^-+1.5(HL)_2(o)FeClL₂·HL_(o)+2H⁺ The equilibrium concentration constant (lgK₁=2.435) and the thermodynamical functions (△H°, △Z° and △S°) are obtained. The proposed mechanisms were supported by 1R spectral measurements.
1. [1]
  Zhaoyang WANG , Chun YANG , Yaoyao Song , Na HAN , Xiaomeng LIU , Qinglun WANG . Lanthanide(Ⅲ) complexes derived from 4′-(2-pyridyl)-2, 2′∶6′, 2″-terpyridine: Crystal structures, fluorescent and magnetic properties. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1442-1451. doi: 10.11862/CJIC.20240114
2. [2]
  Mengyun Wu , Yuxin Deng , Wenhui Wang , Dongdong Xu , Langui Xie , Peipei Sun . 电化学合成4-氯-2-三异丙基硅基喹啉. University Chemistry, 2026, 41(5): 222-229. doi: 10.12461/PKU.DXHX202511044
3. [3]
  Liyang ZHANG , Dongdong YANG , Ning LI , Yuanyu YANG , Qi MA . Crystal structures, luminescent properties and Hirshfeld surface analyses of three cadmium(Ⅱ) complexes based on 2-(3-(pyridin-2-yl)-1H-pyrazol-1-yl)benzoate. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1943-1952. doi: 10.11862/CJIC.20240079
4. [4]
  Xiyuan Zhang , Rui Dong , Yang Yang , Jiapeng Ding , Zhiwei Miao . Palladium-Catalyzed Tandem Cyclization of 4-Vinylbenzoxazinone and Indene-2-carbaldehyde: A Comprehensive Organic Chemistry Experiment. University Chemistry, 2025, 40(9): 361-367. doi: 10.12461/PKU.DXHX202410062
5. [5]
  Sihan Wang , Chenxi Yu , Shuzhang Ran , Jiawei Chen , Shoutong Rao , Xinyi Liang , Ruiqi Dong , Guixiang Zeng , Guoqiang Wang , Jing Ma . 铁配合物合成与性质探究的数智化改进——大学化学实验中“磺基水杨酸合铁配合物的组成与稳定常数的测定”的创新设计. University Chemistry, 2026, 41(5): 36-49. doi: 10.12461/PKU.DXHX202511137
6. [6]
  Ranhui Fu , Shixin Zhou , Ran Ji , Feifei Gao , Hui Xu . 季膦盐合成实验的改进与拓展——水相一步法合成乙基三苯基溴化膦及其力致发光锰配合物的制备及表征. University Chemistry, 2026, 41(5): 252-263. doi: 10.12461/PKU.DXHX202510018
7. [7]
  Anqiu LIU , Long LIN , Dezhi ZHANG , Junyu LEI , Kefeng WANG , Wei ZHANG , Junpeng ZHUANG , Haijun HAO . Synthesis, structures, and catalytic activity of aluminum and zinc complexes chelated by 2-((2,6-dimethylphenyl)amino)ethanolate. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 791-798. doi: 10.11862/CJIC.20230424
8. [8]
  Kangmin Wang , Liqiu Wan , Jingyu Wang , Chunlin Zhou , Ke Yang , Liang Zhou , Bijin Li . Multifunctional 2-(2′-hydroxyphenyl)benzoxazoles: Ready synthesis, mechanochromism, fluorescence imaging, and OLEDs. Chinese Chemical Letters, 2024, 35(10): 109554-. doi: 10.1016/j.cclet.2024.109554
9. [9]
  Danqing Wu , Jiajun Liu , Tianyu Li , Dazhen Xu , Zhiwei Miao . Research Progress on the Simultaneous Construction of C—O and C—X Bonds via 1,2-Difunctionalization of Olefins through Radical Pathways. University Chemistry, 2024, 39(11): 146-157. doi: 10.12461/PKU.DXHX202403087
10. [10]
  Yuexiang Liu , Xiangqiao Yang , Tong Lin , Guantian Yang , Xiaoyong Xu , Bubing Zeng , Zhong Li , Weiping Zhu , Xuhong Qian . Efficient continuous synthesis of 2-[3-(trifluoromethyl)phenyl]malonic acid, a key intermediate of Triflumezopyrim, coupling with esterification-condensation-hydrolysis. Chinese Chemical Letters, 2025, 36(1): 109747-. doi: 10.1016/j.cclet.2024.109747
11. [11]
  Xueting Feng , Ziang Shang , Rong Qin , Yunhu Han . Advances in Single-Atom Catalysts for Electrocatalytic CO₂ Reduction. Acta Physico-Chimica Sinica, 2024, 40(4): 2305005-0. doi: 10.3866/PKU.WHXB202305005
12. [12]
  Zhilian Liu , Wengui Wang , Hongxiao Yang , Yu Cui , Shoufeng Wang . Ideological and Political Education Design for the Synthesis of Irinotecan Drug Intermediate 7-Ethyl Camptothecin. University Chemistry, 2024, 39(2): 89-93. doi: 10.3866/PKU.DXHX202306012
13. [13]
  Aiyi Xin , Jiawei Li , Xinyang Ran , Chuanjiang Fu , Zhiguo Wang . Collaborative Science and Education Based Experimental Design in Organic Chemistry: A Case Study of the Nucleophilic Substitution Reaction of 2-Hydroxymethyl-4,6-Di-Tert-Butylphenol. University Chemistry, 2025, 40(5): 366-375. doi: 10.12461/PKU.DXHX202407031
14. [14]
  Xuyu WANG , Xinran XIE , Dengke CAO . Photoreaction characteristics and luminescence modulation in phosphine-anthracene-based Au(Ⅰ) and Ir(Ⅲ) complexes. Chinese Journal of Inorganic Chemistry, 2025, 41(8): 1513-1522. doi: 10.11862/CJIC.20250113
15. [15]
  Keying Qu , Jie Li , Ziqiu Lai , Kai Chen . Unveiling the Mystery of Chirality from Tartaric Acid. University Chemistry, 2024, 39(9): 369-378. doi: 10.12461/PKU.DXHX202310091
16. [16]
  Anqi LI , Wenjing YANG , Xueming LI , Yanfong REN . Performance and mechanism of a foam Ti/FeCo-Fe₂O₃-CoFe₂O₄/SnO₂-Sb anode for synergistic activation of peroxymonosulfate toward degradation of organic pollutants. Chinese Journal of Inorganic Chemistry, 2026, 42(5): 944-958. doi: 10.11862/CJIC.20250323
17. [17]
  Yue Li , Minghao Fan , Conghui Wang , Yanxun Li , Xiang Yu , Jun Ding , Lei Yan , Lele Qiu , Yongcai Zhang , Longlu Wang . 3D layer-by-layer amorphous MoS_x assembled from [Mo₃S₁₃]^2- clusters for efficient removal of tetracycline: Synergy of adsorption and photo-assisted PMS activation. Chinese Chemical Letters, 2024, 35(9): 109764-. doi: 10.1016/j.cclet.2024.109764
18. [18]
  Guang Huang , Lei Li , Dingyi Zhang , Xingze Wang , Yugai Huang , Wenhui Liang , Zhifen Guo , Wenmei Jiao . Cobalt’s Valor, Nickel’s Foe: A Comprehensive Chemical Experiment Utilizing a Cobalt-based Imidazolate Framework for Nickel Ion Removal. University Chemistry, 2024, 39(8): 174-183. doi: 10.3866/PKU.DXHX202311051
19. [19]
  Jun LUO , Baoshu LIU , Yunchang ZHANG , Bingkai WANG , Beibei GUO , Lan SHE , Tianheng CHEN . Europium(Ⅲ) metal-organic framework as a fluorescent probe for selectively and sensitively sensing Pb²⁺ in aqueous solution. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2438-2444. doi: 10.11862/CJIC.20240240
20. [20]
  Shiqian WEI , Xinyu TIAN , Hong LIU , Maoxia CHEN , Fan TANG , Qiang FAN , Weifeng FAN , Yu HU . Oxygen reduction reaction/oxygen evolution reaction catalytic performances of different active sites on nitrogen-doped graphene loaded with iron single atoms. Chinese Journal of Inorganic Chemistry, 2025, 41(9): 1776-1788. doi: 10.11862/CJIC.20250102

Get Citation

PDF

XML

Metrics

PDF Downloads(1)
Abstract views(1188)
HTML views(70)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return