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Liu X, Zhu YQ, Li J, Wang Y, Shi Q, Li AZ, Ji K, Wang X, Zhao X, Zheng J, Duan H. Electrosynthesis of adipic acid with high faradaic efficiency within a wide potential window. Nat Commun 2024; 15:7685. [PMID: 39227577 PMCID: PMC11372150 DOI: 10.1038/s41467-024-51951-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 08/20/2024] [Indexed: 09/05/2024] Open
Abstract
Electrosynthesis of adipic acid (a precursor for nylon-66) from KA oil (a mixture of cyclohexanone and cyclohexanol) represents a sustainable strategy to replace conventional method that requires harsh conditions. However, its industrial possibility is greatly restricted by the low current density and competitive oxygen evolution reaction. Herein, we modify nickel layered double hydroxide with vanadium to promote current density and maintain high faradaic efficiency (>80%) within a wide potential window (1.5 ~ 1.9 V vs. reversible hydrogen electrode). Experimental and theoretical studies reveal two key roles of V modification, including accelerating catalyst reconstruction and strengthening cyclohexanone adsorption. As a proof-of-the-concept, we construct a membrane electrode assembly, producing adipic acid with high faradaic efficiency (82%) and productivity (1536 μmol cm-2 h-1) at industrially relevant current density (300 mA cm-2), while achieving >50 hours stability. This work demonstrates an efficient catalyst for adipic acid electrosynthesis with high productivity that shows industrial potential.
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Affiliation(s)
- Xiang Liu
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Yu-Quan Zhu
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, China
| | - Jing Li
- College of Carbon Neutrality Future Technology, Sichuan University, Chengdu, China.
| | - Ye Wang
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Qiujin Shi
- Department of Chemistry, Tsinghua University, Beijing, China
| | - An-Zhen Li
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Kaiyue Ji
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Xi Wang
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Xikang Zhao
- Sinopec Research Institute of Petroleum Processing Co., Ltd., Beijing, China
| | - Jinyu Zheng
- Sinopec Research Institute of Petroleum Processing Co., Ltd., Beijing, China
| | - Haohong Duan
- Department of Chemistry, Tsinghua University, Beijing, China.
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, China.
- Engineering Research Center of Advanced Rare Earth Materials, (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, China.
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Shen H, Gong Y, Chen W, Wei X, Li P, Cheng C. Anion Exchange Membrane Based on BPPO/PECH with Net Structure for Acid Recovery via Diffusion Dialysis. Int J Mol Sci 2023; 24:ijms24108596. [PMID: 37239945 DOI: 10.3390/ijms24108596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/29/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
In order to improve the performance of the anion exchange membrane (AEM) used in acid recovery from industrial wastewater, this study adopted a new strategy in which brominated poly (2,6-dimethyl-1,4-phenyleneoxide) (BPPO) and polyepichlorohydrin (PECH) were used as the polymer backbone of the prepared membrane. The new anion exchange membrane with a net structure was formed by quaternizing BPPO/PECH with N,N,N,N-tetramethyl-1,6-hexanediamine (TMHD). The application performance and physicochemical property of the membrane were adjusted by changing the content of PECH. The experimental study found that the prepared anion exchange membrane had good mechanical performance, thermostability, acid resistance and an appropriate water absorption and expansion ratio. The acid dialysis coefficient (UH+) of anion exchange membranes with different contents of PECH and BPPO was 0.0173-0.0262 m/h at 25 °C. The separation factors (S) of the anion exchange membranes were 24.6 to 27.0 at 25 °C. Compared with the commercial BPPO membrane (DF-120B), the prepared membrane had higher values of UH+ and S in this paper. In conclusion, this work indicated that the prepared BPPO/PECH anion exchange membrane had the potential for acid recovery using the DD method.
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Affiliation(s)
- Haiyang Shen
- School of Materials & Chemical Engineering, Anhui Jianzhu University, Hefei 230022, China
| | - Yifei Gong
- School of Materials & Chemical Engineering, Anhui Jianzhu University, Hefei 230022, China
| | - Wei Chen
- School of Materials & Chemical Engineering, Anhui Jianzhu University, Hefei 230022, China
| | - Xianbiao Wei
- Department of Mathematics & Physics, Anhui Jianzhu University, Hefei 230022, China
| | - Ping Li
- School of Materials & Chemical Engineering, Anhui Jianzhu University, Hefei 230022, China
| | - Congliang Cheng
- School of Materials & Chemical Engineering, Anhui Jianzhu University, Hefei 230022, China
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New high-performance bulky N-heterocyclic group functionalized poly(terphenyl piperidinium) membranes for HT-PEMFC applications. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.119884] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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