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Selective lithium leaching from spent Li(MnyFe1-y)PO4 cathodes with gradient in-situ-oxidation of Na2S2O8

Particuology 2025年 102卷 207-215页

作者： Lei, Hao Wang, Wei Jiang, Longjin Chang, Zhidong Anwar, Hira Dong, Bin Gao, Dekun Chen, Zhiyi Liu, Mingming School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing100083 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Anhui Chaoyue Environmental Protection Technology Co. Ltd Chuzhou239060 China Anhui Huihong Technology Co. Ltd Chuzhou239060 China

The recovery of lithium from spent lithium iron manganese phosphate batteries is crucial for the efficient utilization of lithium resources and for alleviating supply constraints. This study proposes a selective lithium recovery method using a Na2S2O8 leaching system for spent lithium iron manganese phosphate battery cathodes. Na2S2O8 was selected based on an analysis of the thermodynamic data of each component in the leaching system. Essential leaching parameters, including H2SO4 dosage, Na2S2O8 dosage, leaching time, and leaching temperature were systematically investigated. The results showed that under the optimized experimental conditions, the lithium leaching rate reached 97.4 % with a selectivity of 96.24 %. The recovered Li2CO3 product meets battery grade requirements. © 2025

关键词： Leaching

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Economic evaluation and prediction on typical lithium-ion battery recycling processes: A multi-objective assessment

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Resources, Conservation and Recycling 2025年 220卷

作者： Li, Huajie Tao, Runxin Hu, Yanyan Zhou, Bingxin Sun, Li Sun, Zhi Ren, Zhijun Gao, Wenfang Tianjin Key Laboratory of Clean Energy and Pollution Control School of Energy and Environmental Engineering Hebei University of Technology Tianjin 300401 China National Key Laboratory of Biochemical Engineering Beijing Engineering Research Centre of Process Pollution Control Institute of Process Engineering Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing 100190 China Suzhou Nuclear Power Research Institute Suzhou215004 China

With the increasing demand for lithium-ion batteries (LIBs), the recycling processes of LIBs have aroused more attention. However, benefits remain limited due to inadequate advanced recycling technologies and low volumes of spent LIBs. In this research, an muti-objective evaluation and prediction system is established for six typical LIBs recycling processes. The direct recycling process of LiNixCoyMn1-x-yO2 (NMC) obtains the highest benefits of 10.07 USD/kg. Recycling NMC can achieve benefits from 10 to 28 USD/kg which is higher than that of LiFePO4 (LFP) because it contains critical metals. The cathode remanufacturing processes generate revenue between 0.64 and 11.9 USD/kg. The contribution of Co and Ni in spent LIBs with the market sizes expected to 3.8-8 × 109 USD and 7.5-9.5 × 109 USD by *** high benefit scenario forecasts total recycling LIBs return to 14.15 × 106 USD by 2040 in China. This research provides guidance for selecting profitable recycling methods, improves sustainable development of metal resources. © 2025 Elsevier B.V.

关键词： Lithium-ion batteries

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Stable Cobalt–Zeolite Propane-Dehydrogenation Catalysts Enabled by Reaction-Driven Reconstruction

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Angewandte Chemie - International Edition 2025年第21期64卷 e202505628页

作者： Liu, Qiang Yao, Yongbin Li, Junmeng Wang, Jingnan Chen, Lili Li, Wenlin Guo, Yangyang Yao, Siyu Yang, Yongan Wang, Xi School of Chemical Engineering and Technology Collaborative Innovation Center of Chemical Science and Engineering Institute of Molecular Plus Department of Chemistry Tianjin University Tianjin300072 China Key Laboratory of Luminescence and Optical Information Ministry of Education School of Physical Science and Engineering Beijing Jiaotong University Beijing100044 China State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing102249 China Institute of Molecular Engineering Plus College of Chemistry Fuzhou University Fuzhou350108 China Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing100190 China College of Chemistry and Chemical Engineering State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of Technology Taiyuan030024 China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China College of Chemical and Biological Engineering Zhejiang University Hangzhou310027 China

Cobalt-based catalysts have emerged as promising substitutes for Pt- and Cr-based propane dehydrogenation (PDH) catalysts. However, controlling the distribution of Co species and achieving stable active centers remains challenging. Here, we report that reaction-driven reconstruction of metallic cobalt (Co0) species within pure silica MFI zeolite (S-1) into CoOx clusters within silanol nests during PDH yields efficient and durable performance. Atomically dispersed CoOx clusters exhibit exceptional durability and high propylene space-time yield (STY), maintaining an ultrahigh propylene STY of 17.2 mmolC3H6 gcat−1 h−1 for over 260 h under industrially relevant conditions, surpassing previous cobalt-based PDH catalysts. Moreover, the catalyst operates stably at 520 °C for 170 h with near-equilibrium propane conversions. Comprehensive characterizations indicate the dynamic evolution process from the silanol nests effectively capturing and stabilizing Co0 species within S-1 zeolite, thereby promoting the dynamic formation of CoOx clusters during the PDH process. We also demonstrate that stable Co─O active centers formed by this unique anchoring strategy improve catalyst stability by suppressing coke formation and promoting efficient propane dehydrogenation. © 2025 Wiley-VCH GmbH.

关键词： Cobalt

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Recent Advances of Sustainable UV Shielding Materials: Mechanisms and Applications

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ACS Applied Materials and Interfaces 2025年第21期17卷 30402-30422页

作者： Dai, Ke Cao, Shuai Yuan, Jiewei Wang, Zhiwei Li, Hong Yuan, Chengqian Yan, Xuehai Xing, Ruirui College of Chemistry and Chemical Engineering Xi’an Shiyou University Xi’an 710065 China State Key Laboratory of Biopharmaceutical Preparation and Delivery Chinese Academy of Sciences Beijing 100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 China Center for Mesoscience Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Department of Radiology Peking Union Medical College Hospital Chinese Academy of Medical Sciences Beijing 100730 China

The escalating global threat of ultraviolet (UV) radiation is manifested through multifaceted damage pathways including cutaneous carcinogenesis, photodegradation of organic substrates, marine ecosystem destabilization, and infrastructure weathering. These urgent challenges have catalyzed sustained interdisciplinary efforts toward advanced UV-shielding technologies spanning biomedical, environmental, and industrial domains. Current material arsenals include melanin, lignin, tannin, polydopamine, zinc oxide and titanium dioxide, etc. These materials can be applied to diverse fields such as food packaging, sunscreen fabrics, sunscreen creams, eyeglasses, and sunscreen films through tailored processing techniques and employing distinct photoprotective mechanisms. Notwithstanding significant progress, the development of an integrated selection framework that reconciles efficiency, durability, and environmental compatibility persists as a critical knowledge gap. In this context, the main mechanisms of various types of UV shielding materials and their applications in different fields are described systematically. Subsequently, a comparative analysis of the advantages and shortcomings of different materials is presented, focusing on their UV shielding efficiency and stability impact. Moreover, the review delves into their unique value in specific scenarios. Finally, building on these analyses, current challenges and future development prospects of UV shielding materials are further discussed, with emphasis on scalability, eco-friendly alternatives, and multifunctional integration, providing valuable insights and guidance for advancing research and promoting sustainable and functional innovations in this field. © 2025 American Chemical Society.

关键词： lignin melanin peptide glass polydopamine UV shielding

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Construction of Active Cs and Zr Sites for Selective Production of Methyl Methacrylate on Cs/Zr/Sio2 Catalyst

SSRN

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SSRN 2025年

作者： Yan, Tingting Deng, Senlin Wang, Gang Li, Jie Chang, Wei Zhang, Guoliang Li, Chunshan School of Chemical Engineering & Technology China University of Mining and Technology Jiangsu221116 China State Key Laboratory of Mesoscience and Engineering CAS Key Laboratory of Green Process and Engineering Beijing Key Laboratory of Solid-State Battery and Energy Storage Process Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Longzihu New Energy Laboratory Henan University Zhengzhou450046 China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Zhengzhou450046 China

Acid-base bifunctional Cs-Zr supported SiO2 exhibit high catalytic performance on aldol condensation of methyl propionate (MP) and formaldehyde (FA) toward methyl acrylate (MMA). However, the effect of structural configuration of surface active sites on the formation rate and selectivity of MMA remains unclear. In this study, a surface engineering strategy was proposed to directionally induce the formation of catalytically active centers. Comprehensive characterizations were performed to identify the structural configuration of surface active Cs and Zr sites and their influence on MMA production in combination with catalytic evaluation. It was discovered that the increased density of isolated hydroxyl groups (≡Si-OH) on SiO2 support after calcination treatment promoted the formation of well-defined Si-O-Zr and Si-O-Cs structures, corresponding to the medium strong acid and weak base sites. The acid-base properties and their balance of as-prepared Cs/Zr/SiO2 catalyst could be controllably modulated by the surface hydroxyl density and Cs (Zr) loading. These highly dispersed Cs and Zr species generated through the strong interaction with hydroxyl groups facilitated the production of MMA while suppressed the undesired MAL. Consequentially, the formation rate and selectivity of MMA could reach up to 0.91 mmol/h/gCat and 94.3% on the optimal 1.5Cs/0.25Zr/SiO2. Further mechanistic studies using in situ DRIFT revealed the catalytic pathway toward MMA and MAL, confirming the activation of MP was the kinetic-relevant step. © 2025, The Authors. All rights reserved.

关键词： Silicon compounds

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Wet oxidation of NO with NaClO2 in alkaline conditions: effects of acidic components in flue gas

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Environmental Research 2025年 278卷 121722页

作者： Wang, Huasheng Deng, Shuang Hu, Hongyun Fang, Can Luo, Guangqian Wang, Ze Li, Songgeng State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Coal Combustion School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan430074 China

Excessive ClO2 tends to be produced and escape, causing secondary pollution when wet oxidation of NO with NaClO2 is conducted under acidic conditions. NaClO2 alkaline oxidation has accordingly received a wide attention. In this work, NaClO2 alkaline oxidation of NO has been systematically studied in a self-built spray tower. Focus has been placed on the effects of acidic components contained in flue gas such as CO2, HCl and SO2. ClO2 and HClO2 are considered more effective for NO oxidation, which tend to be produced in an acidic environment. HCO3− has a relatively higher hydrolysis coefficient than ClO2−, leading to more HClO2 formation. Similarity is found with HCl although the effect is not as significant as CO2 due to its low concentration in flue gas. SO2 exhibits a negative effect on NO removal since HClO2 can be consumed by SO2. Nearly 100 % NO removal efficiency can be achieved although there is an initial time delay necessary for the neutralization of alkaline environment. A similar performance has been observed for HCl. On the contrary, SO2 exhibits a negative effect on NO removal due to the competition with NO in the consumption of NaClO2. Additives such as NaClO and CTAC were also used to enhance NaClO2 alkaline oxidation performance. Interesting to note that CTAC can nearly eliminate the time delay by intensifying the gas-liquid mass transfer. © 2025 Elsevier Inc.

关键词： Diffusion in solids

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Triphenylphosphine directly knitted porous coordinating hyper crosslinked poly(ionic liquid)s for efficient CO2 fixation into cyclic carbonates

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Chemical engineering Journal 2025年 513卷

作者： Fu, Mengqian Guo, Tianyu Liu, Shuaifei Liu, Wen Li, Yong Qiao, Cui Li, Yunong Yang, Zifeng Hua, Wei Su, Qian Cheng, Weiguo Zhang, Suojiang CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and Engineering Beijing Key Laboratory of Ionic Liquids Clean Process Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Advanced Energy Science and Technology Guangdong Laboratory Guangdong Huizhou516003 China Sinopec Beijing Yanshan Petrochemical Company Beijing102500 China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Zhengzhou450000 China Henan University Zhengzhou450000 China

CO2 is converted to carbonate via a cycloaddition reaction with epoxides under mild conditions. This process is a promising approach for reducing carbon emissions due to its atom-economical reactions and high-value products. However, the design strategies and preparation methods of catalysts are complex and unclear. In this study, we present a novel approach for directly knitting porous hyper crosslinked poly(ionic liquid)s (HPILs) containing nucleophilic Br- sites and Lewis acid Zn2+ sites. Firstly, the monomer knits the HPIL with the Br- site through quaternary phosphine ionization reaction and Friedel Crafts alkylation reaction. Subsequently, a series of ZnX2 salts (X=Cl, Br, I) were anchored into the HPIL-ZnX2 (HPIL coordinated with ZnX2) skeleton structure via a facile coordination reaction. The catalytic performance of HPIL-ZnX2 was evaluated using CO2 and propylene oxide (PO) under optimized conditions (70 °C, 1 MPa CO2, 3 h). Results showed that HPIL-ZnX2 exhibited significantly enhanced activity compared to HPIL. Notably, HPIL-ZnBr2 achieved the highest efficiency (yield = 96.2 %) and demonstrated excellent reusability. Based on in-situ diffuse reflectance infrared fourier transform spectroscopy (DRIFTS) analyses, the catalytic mechanism proposed for the synergistic activation of PO by Br- and Zn2+, which facilitated the cycloaddition reaction. This work provides a new strategy for synthesizing multifunctional HPIL-ZnX2 catalysts, expanding their applications in producing high-value chemicals. © 2025

关键词： Fourier transform infrared spectroscopy

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In-situ formation of inorganic-rich solid electrolyte interphase by using antimony and fluorine-modified Cu foam for dendrite-free sodium metal anodes

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Nano Energy 2025年 138卷

作者： Zheng, Xiang Zhang, Zining Li, Zhiqian Shi, Chaohong Yamauchi, Yusuke Tang, Jing State Key Laboratory of Petroleum Molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai200062 China and School of Chemical Engineering The University of Queensland BrisbaneQLD4072 Australia Department of Materials Process Engineering Graduate School of Engineering Nagoya University Nagoya464−8603 Japan Institute of Eco-Chongming Shanghai202162 China

The practical application of sodium metal batteries (SMB) is hindered by severe dendrite formation. In-situ growth of an artificial inorganic-rich solid electrolyte interphase (SEI) to mitigate dendrite formation has garnered significant attention. This study reports the design and fabrication of an antimony and fluorine-modified 3D Cu foam current collector (Sb-CuF2@Cu), which induces the in-situ forming of inorganic-rich SEI layer during Na metal deposition. As investigated by X-ray depth profiles and ex-situ transmission electron microscopy, the SEI consists of a Sb3 + (Na2Sb4O7)-containing external layer and a NaF-rich internal layer. Theoretical calculations and in-situ optical microscopy have demonstrated that the inorganic-rich SEI facilitates rapid Na+ transfer across the entire 3D framework, resulting in densely packed and dendrite-free Na metal anodes. The external layer facilitates Na+ conduction, stabilizes Na+ flux, and acts as a buffer layer;whereas the inner layer inhibits ongoing reduction reactions and equalizes the electric field, further suppressing dendrite growth. Consequently, the symmetrical cells exhibit an extended cycle life of 1000 hours at 2 mA cm−2 and 1 mAh cm−2. Moreover, the Sb-CuF2@Cu/Na anode combined with the Na3V2(PO4)3 cathode results in a full battery with a long service life of 1000 cycles at 5 C. © 2025

关键词： High resolution transmission electron microscopy

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Utilizing Ca3(PO4)2 and calcium superphosphate fertilizer for the passage of heavy metals in coal gangue: Mechanical insights and efficiency evaluation

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Environmental engineering Research 2025年第4期30卷

作者： Zhang, Hualin Bai, Wenlong Tian, Shaojing Zhao, Mengfei Yang, Youming Jiang, Xiaoliang Li, Tinggang School of Metallurgical engineering Jiangxi University of Science and Technology Ganzhou341099 China Key Laboratory of Rare Earth Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths Jiangxi Institute of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou341003 China CAS Key Laboratory of Green Process and Engineering Innovation Academy for Green Manufacture National Engineering Research Center of Green Recycling for Strategic Metal Resources Beijing Engineering Research Centre of Process Pollution Control Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Inner Mongolia Dongyuan Environmental Protection Technology Co. Ltd Ordos014300 China State Key Laboratory of Biochemical Engineering Key Laboratory of Biopharmaceutical Preparation and Delivery Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China

Coal gangue is a typical industrial waste, which will bring environmental challenges and resource depletion when piled up in large quantities, and heavy metal pollution is a prominent problem. In this study, Ca3(PO4)2 and calcium superphosphate fertilizer (CSF) were utilized to passivate coal gangue at different pollution levels, and its passivation mechanism was discussed. The results show that both Ca3(PO4)2 and CSF can effectively passivate coal gangue and effectively reduce moderate or high levels of coal gangue pollution to a slight or clean level. The passivation effect of CSF is slightly better than that of Ca3(PO4)2. Through characterization of coal gangue before and after passivation and simulation with Visual MINTEQ and PHREEQC software, it is found that Ca3(PO4)2 can provide PO3 2−, while CSF releases HPO3 –, which is ionized to generate more PO3 2−, and finally forms insoluble or slightly soluble phosphate with heavy metals. Leaching experiments show that the treated samples contain obviously more stable heavy metal components, and the leaching risk is lower than that of untreated coal gangue. In summary, this method proves its effectiveness in fixing heavy metals in coal gangue and provides an effective method for the harmless treatment of coal gangue. © 2025, Korean Society of Environmental Engineers. All rights reserved.

关键词： Coal tailings

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Synergistic Separation Mechanisms of Impurities in Ionic Liquid Aqueous Solution from the Cellulose Regeneration process

SSRN

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SSRN 2025年

作者： Zou, Shengwang Wang, Junfeng Wu, Yingqiu Dong, Yanan Wang, Huijao Nie, Yi Xu, Hongxiang Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing100190 China Beijing100083 China

Ionic liquids (ILs) have shown significant potential for industrial application in the cellulose regeneration process. However, the accumulation of impurities, especially phosphorus (P) from the raw materials, in the ionic liquid (IL) aqueous solutions generated during the cellulose regeneration process, seriously affects the performance of IL and the quality of the final products. In this study, a crystallization precipitation method was employed to investigate the removal of impurities from IL aqueous solutions. The results demonstrated that the presence of IL accelerated the phase transformation of amorphous calcium phosphate to hydroxyapatite, although it prolonged the time to reach equilibrium. The highest P removal efficiency was achieved at a Ca/P molar ratio of 1.67:1, with an increase in pH further enhanced the removal efficiency. The morphology and size of crystallization precipitates were significantly influenced by the reaction time, pH, IL concentration, and temperature. By optimizing the reaction conditions, a P removal efficiency of 88.82% was achieved in IL aqueous solutions generated during the established hundred-ton-scale cellulose regeneration demonstration production line, with the process also exhibited synergistic removal capabilities for NO3-, SO42-, and Mg2+. These findings suggested that this method effectively removed the P and other inorganic impurities from the IL aqueous solutions generated during the cellulose regeneration process. © 2025, The Authors. All rights reserved.

关键词： Molar ratio

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