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Enhanced Steelmaking Slag Mineral Carbonation in Dilute Alkali Solution

Enhanced Steelmaking Slag Mineral Carbonation in Dilute Alka...

The 12th International Symposium on East Asian Recycling Technology(第十二届东亚资源回收技术国际研讨会)

作者： Chenye Wang Huiquan Li Kai Pan Weijun Bao Key Lab.Green Process and Engineering National Engineering Lab.for Hydrometallurgical Cleaner Production TechnologyInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Steelmaking slag mineral carbonation is a possible technology for the reduction of carbon dioxide(CO2)emissions to the atmosphere,which has been studied both in aqueous and dilute alkali medium.

关键词： Steelmaking slag Carbonation Carbon dioxide Sodium hydroxide

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Catalytic Asymmetric Total Synthesis of (+)-Chamaecydin and (+)-Isochamaecydin and their Stereoisomers

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Angewandte Chemie 2025年

作者： Yuan-He Zhang Le-Hua Deng Dong-Xing Tan Fu-She Han Jilin Province Key Lab of Green Chemistry and Process Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China School of Applied Chemistry and Engineering University of Science and Technology of China Hefei Anhui 230026 China

A modular approach was developed for the first catalytic asymmetric total syntheses of naturally occurring C 30 terpene quinone methides and their non-natural stereoisomers, which feature the presence of an unprecedented spiro[4.4]nonane-containing 6–6–6-5–5–3 hexacyclic skeleton. Resting on a chiral phosphinamide-catalyzed enantioselective reduction of 2,2-disubstituted cyclohexane-1,3-dione, a concise route for the synthesis of enantioenriched 6–6 bicyclic fragment was developed. The 6–6 ring fragment and the five-membered ring fragment were unified via a metal-halogen exchange/intermolecular addition reaction. Subsequently, the central 6–5 bicyclic ring system was constructed through a Michael/aldol cascade. The successful establishment of these strategic transformations allowed for an efficient and rapid construction of spiroannulated 6–6–6–5–5 pentacarbocyclic core via a convergent manner. Finally, the total syntheses of naturally occurring (+)-chamaecydin and (+)-isochamaecydin and their corresponding 1’,5’-stereoisomers have been achieved divergently by appropriately orchestrating the reaction sequence including isopropyl incorporation, oxidation state adjustment, and carbonyl group-directed regio- and stereoselective cyclopropanation at a late stage.

关键词： Natural product cryptoquinonemethide total synthesis modular synthesis Michael/aldol cyclization

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Construction of LSPR enhanced Ag/Cu2O/CuO Z-scheme heterojunction films and their superior photocatalytic redox activity

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Journal of Alloys and Compounds 2025年 1010卷

作者： Zhu, Mengran Hao, Liang Zhao, Qian Hu, Te Guan, Sujun Lu, Yun Tianjin Key Lab of Integrated Design and On-line Monitoring for Light Industry & Food Machinery and Equipment Tianjin300222 China College of Mechanical Engineering Tianjin University of Science & Technology No. 1038 Dagu Nanlu Hexi District Tianjin300222 China Tianjin International Joint Research and Development Center of Low-carbon Green Process Equipment Tianjin300222 China College of Materials Science and Hydrogen Energy Engineering Foshan University No. 18 Jiangwanyilu Guangdong Foshan528000 China Research Center for Space System Innovation Tokyo University of Science No. 2641 Yamazaki Chiba Prefecture Noda-shi278-8510 Japan School Technological University Chengdu Technological University No. 2 Huapaifang Street Chengdu610031 China Graduate School of Science and Engineering Chiba University No. 1-33 Yayoi-cho Chiba Inage-ku263-8522 Japan

Traditional methods, including wet chemistry, annealing, and photoreduction, were employed to prepare Ag/Cu2O/CuO composite films. Analysis indicates that the Cu2O/CuO heterojunction films were formed after wet chemical treatment and annealing. After the photoreduction reaction, Ag0 nanoparticles and nanosheets modified the Cu2O/CuO heterojunction films at the nano and micro scales. The Ag modification not only enhanced the absorption of solar light of the heterojunction but also improved the transfer and separation of photogenerated electrons within the heterojunction, primarily attributed to the localized surface plasmon resonance (LSPR) effect of elemental silver. Compared to Cu2O/CuO films, the performance of Ag/Cu2O/CuO films in the photocatalytic degradation of MB increased by up to two times, while the performance in the photocatalytic reduction of Cr6+ improved by up to 2.56 times. Through the analysis of the charge transfer pathways of photogenerated electrons and holes within this system, we propose that the heterojunction formed between Cu2O and CuO is of the Z-type. This study will provide valuable guidance for the design of highly efficient copper-based photocatalysts. © 2024 Elsevier B.V.

关键词： Ag/Cu 2 O/CuO Heterojunction Film Photocatalytic redox

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Synergistic Catalysts for Lithium-Sulfur Batteries: Ni Single Atom and MoC Nanoclusters Composites

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Angewandte Chemie 2025年

作者： Chongchong Zhao Yanxia Liu Feng Huo Zhenzhen Guo Yurui Lu Bowen Sun Meng Li Hui Xu Min Zhang Hailin Fan Zixu Sun Andreu Cabot Yatao Zhang Henan Key Laboratory of Energy Storage Materials and Processes Zhengzhou Institute of Emerging Industrial Technology Zhengzhou 450000 China School of Chemical Engineering Zhengzhou University Zhengzhou 450000 China Longzihu New Energy Laboratory Zhengzhou 450000 China Beijing Key Laboratory of Solid State Battery and Energy Storage Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Key Lab for Special Functional Materials of Ministry of Education School of Nanoscience and Materials Engineering Henan University Kaifeng 475004 China Catalonia Institute for Energy Research – IREC Sant Adrià de Besòs Barcelona 08930 Spain Catalan Institution for Research and Advanced Studies – ICREA Pg. Lluís Companys 23 Barcelona 08010 Spain

The practical application of sulfur (S) cathodes in lithium-sulfur (Li-S) batteries is hindered by the shuttling of soluble lithium polysulfides (LiPSs) and sluggish sulfur redox kinetics. Addressing these challenges requires advanced catalytic host materials capable of trapping LiPSs and accelerating Li-S redox reactions. However, single-site catalysts struggle to effectively mediate the complex multi-step and multi-phase sulfur conversion processes. In this study, we present a novel dual-site catalyst, Ni-MoC-NC, featuring nickel single atoms anchored to nitrogen sites (Ni-N 4 ) within a carbon nitride (NC) matrix and molybdenum carbide (MoC) nanoclusters. Experimental and theoretical analyses reveal that MoC sites efficiently catalyze the reduction of long-chain LiPSs (Li₂S₈ to Li₂S₄), while Ni-N 4 sites drive the reduction of short-chain LiPSs (Li₂S₄ to Li₂S), resulting in a synergistic enhancement of the complete Li-S redox process. When incorporated as a coating on the cathode side of a commercial polypropylene (PP) separator, the Ni-MoC-NC catalyst enhances sulfur utilization, suppresses LiPSs shuttling, and facilitates a uniform Li + -ion distribution, effectively mitigating the uncontrolled growth of lithium dendrites. Thereby, Li-S batteries employing an S/Ni-MoC-NC cathode and a Ni-MoC-NC@PP separator demonstrate outstanding performance, including an initial capacity of 1624 mAh g⁻¹ at 0.2C and 1142 mAh g⁻¹ at 1C, retaining 590 mAh g⁻¹ after 800 cycles. At a sulfur loading of 8.3 mg cm⁻ 2 and an electrolyte/sulfur ratio of 6 µL mg⁻¹, the system achieves an initial areal capacity of 9.57 mAh cm⁻ 2 at 0.1C, showcasing significant promise for practical applications.

关键词： Dual active sites Li-S battery Lithium polysulfide Long-chain LiPSs Ni-MoC-NC catalysts Short-chain LiPSs

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CuCl2/8-Hydroxyquinoline-catalyzed α-Arylation of Diethyl Malonate with Aryl Bromides

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Chemical Research in Chinese Universities 2018年第5期34卷 727-731页

作者： YANG Jiuquan WU Guojie HE Yupeng HAN Fushe College of Chemistry Chemical Engineering and Environmental Engineering Liaoning Shihua University Fushun 113001 P. R. China Jilin Province Key Lab of Green Chemistry and Process Changehun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China

A general and efficient coupling of aryl bromides with diethyl malonate is presented. The reaction provided the α-arylated diethyl malonates in moderate to good yields with a low loading of CUC12（5%, molar fraction） and 8-hydroxyquinoline（5% , molar fraction）. This method has good compatibility for a wide range of aryl bromides.

关键词： Copper catalyst α-Arylation Malonate Ullmann reaction Hurtley reaction

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Highly active N,O-doped hierarchical porous carbons for high-energy supercapacitors

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Chinese Chemical Letters 2020年第5期31卷 1226-1230页

作者： Ziyang Zhou Hui Duan Zhiwei Wang Yaokang Lv Wei Xiong Dazhang Zhu Liangchun Li Mingxian Liu Lihua Gan Shanghai Key Lab.of Chemical Assessment and Sustainability School of Chemical Science and EngineeringTongji UniversityShanghai 200092China State Key Laboratory of Pollution Control and Resources Reuse Shanghai Institute of Pollution Control and Ecological SecuritySchool of Environmental Science and EngineeringTongji UniversityShanghai 200092China College of Chemical Engineering Zhejiang University of TechnologyHangzhou 310014China School of Chemistry and Environmental Engineering Key Laboratory for Green Chemical Process(Ministry of Education)Hubei Key Lab.of Novel Reactor&Green Chemical TechnologyWuhan Institute of TechnologyZhengzhou 450001China College of Chemistry and Molecular Engineering Zhengzhou UniversityWuhan 430205China

Highly active N,O-doped hierarchical porous carbons(NOCs)are fabricated through the in-situ polymerization and pyrolysis of o-tolidine and ***-prepared NOCs have a variety of faradaic-active species(N-6,N-5 and O-I),high ion-accessible platform(1799 m^2/g)and hierarchically micro-meso-macro porous ***,the resultant NOC electrode delivers an advantageous specific capacitance(311 F/g),with a pseudocapacitive contribution of 37%in a threeelectrode configuration,and an enhanced energy output of 18.0 Wh/kg@350 W/kg owing to the enlarged faradaic effect in an aqueous redox-active ***,a competitive energy density(74.9 Wh/kg)and high-potential durability(87.8%)are achieved in an ionic liquid(EMIMB F4)-assembled *** study sheds light on a straightforward avenue to optimize the faradaic activity and nanoarchitecture for advanced supercapacitors.

关键词： N.O-doped carbon Hierarchical porous structure Faradaic activity Supcrcapacitor High energy density

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Water-in-salt electrolyte ion-matched N/O codoped porous carbons for high-performance supercapacitors

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Chinese Chemical Letters 2020年第2期31卷 579-582页

作者： Jingjing Yan Dazhang Zhu Yaokang Lv Wei Xiong Mingxian Liu Lihua Gan Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and EngineeringTongji UniversityShanghai 200092China College of Chemical Engineering Zhejiang University of TechnologyHangzhou 310014China Key Laboratory for Green Chemical Process of Ministry of Education School of Chemistry and Environmental EngineeringWuhan Institute of TechnologyWuhan 430073China College of Chemistry and Molecular Engineering Zhengzhou UniversityZhengzhou 450001China

Pore size and distribution in carbon-based materials are regarded to be a key factor to affect the electrochemical capacitive performances of the resultant *** this study,nitrogen and oxygen codoped porous carbons(NOPCs) are fabricated based on a simple Schiff-base reaction between m-phenylenediamine and *** NOPCs have tunable morphologies,high surface areas,abundant heteroatom *** importantly,the carbons show a dominant micropores of 0.5-0.8 nm,comparable to the ionic sizes of LiTFSI(Li^+0.069 nm;TFSI-0.79 nm) water-in-salt electrolyte with a high potential window of 2.2 ***,the fabricated symmetric supercapacitor gives a high energy output of 30.5 Wh/kg at 1 kW/kg,and high stability after successive 10,000 cycles with ^96.8% *** study provides promising potential to develop high-energy supercapacitors.

关键词： N/O Codoped Porous carbon Water-in-salt electrolyte Pore/ion size matching Symmetrical supercapacitor High energy density

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Elongated Fe–N–C containing trace atomic Co dopants for high power density PEMFCs

Industrial Chemistry & Materials

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Industrial Chemistry & Materials 2024年第4期2卷 634-643页

作者： Jiayao Cui Junyong Min Hao Wang Jianglan Shui Lishan Peng Zhenye Kang Jieyuan Liu Qingjun Chen Shuo Bai Yanrong Liu CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and EngineeringBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial TechnologyHenan UniversityZhengzhou 450000China School of Materials Science and Engineering Beihang UniversityBeijingChina Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou 341000China State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China

Developing single-atom Fe–N_(4)/C catalysts is crucial for the large-scale implementation of proton exchange membrane fuel cells(PEMFCs).While Fe–N_(4)/C catalysts are inherently active in accelerating the slow ORR process,their performance is still inferior to that of Pt/***,a trace Co-doped Fe single-atom catalyst(Fe(tCo)–N–C)containing more active Fe_(2)N_(8) sites has been ***,compared with typical FeN4 sites in an Fe–N–C electrocatalyst,the Fe_(2)N_(8) sites generate a larger Fe–N bond length due to *** elongated Fe–N bond in Fe_(2)N_(8) lowers the d-band center and charge density of iron sites,enhancing the ORR process by facilitating the formation of*OOH and generation and desorption of****(tCo)–N–C manifested excellent acidic and alkaline ORR activity,with a half-wave potential(E_(1/2))of 0.80 V in HClO_(4) solution and 0.89 V in KOH *** importantly,high peak power densities(Pmax)were realized by applying Fe(tCo)–N–C in PEMFCs,with the Pmax reaching 890 mW cm^(-2) in H_(2)–O_(2) and 380 mW cm^(-2) in H_(2)–***,trace Co dopants in the catalyst improved carbon graphitization and provided high ORR catalytic *** research introduces an innovative approach to engineering highly active Fe_(2)N_(8) sites,providing valuable insights for the sustainable progress of PEMFC technology.

关键词： Proton exchange membrane fuel cells Oxygen reduction reaction Platinum-group-metal-free catalysts Single-atom catalysts Bimetallic active sites

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Phase transfer-based high-efficiency recycling of precious metal electrocatalysts

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green Chemical engineering 2024年第1期5卷 68-74页

作者： Qing Zeng Shaonan Tian Yu Zhang Hui Liu Dong Chen Xinlong Tian Chaoquan Hu Jun Yang State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing100190China State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikou570228China Nanjing IPE Institute of Green Manufacturing Industry Nanjing211100China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China

Recycling precious metals with high-efficiency is undoubtedly beneficial to optimize resource utilization for environmental remediation and sustainable ***,we report an efficient route to recycle the palladium(Pd)and platinum(Pt)electrocatalysts using a phase transfer *** strategy involves acidic dissolution of deactivated precious metal(Pd/Pt)electrocatalysts from their loading substrates,mixing with an ethanolic solution of dodecylamine(DDA),subsequent extraction of metal ions into a non-polar organic phase,and final reduction by sodium borohydride to reproduce high-performance electrocatalysts towards typical electrochemical reactions,e.g.,oxygen reduction reaction(ORR)and ethanol oxidation reaction(EOR).In specific,the transfer efficiencies are up to 98%and the final recovery rate is over 85%for Pd and Pt electrocatalysts in each *** approach symbolizes a facile and efficient way to recover precious metals,which might be applied to recycling a wide range of metals in various realms after appropriate modifications.

关键词： Precious metal Phase transfer Extraction Recovery Electrocatalyst

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Acetic acid-assisted mild dealloying of fine CuPd nanoalloys achieving compressive strain toward high-efficiency oxygen reduction and ethanol oxidation electrocatalysis

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Carbon Energy 2023年第7期5卷 112-120页

作者： Danye Liu Yu Zhang Hui Liu Peng Rao Lin Xu Dong Chen Xinlong Tian Jun Yang State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijingChina State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikouChina Jiangsu Key Laboratory of New Power Batteries School of Chemistry and Materials ScienceJiangsu Collaborative Innovation Centre of Biomedical Functional MaterialsNanjing Normal UniversityNanjingChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina Nanjing IPE Institute of Green Manufacturing Industry NanjingJiangsuChina

Dealloying by which the transition metal is partially or completely leached from an alloy precursor is an effective way to optimize the fundamental effects for further enhancing the electrocatalysis of a ***,to address the deficiencies associated with the commonly used dealloying methods,for example,electrochemical and sulfuric acid/nitric acid treatment,we report an acetic acid-assisted mild strategy to dealloy Cu atoms from the outer surface layers of CuPd alloy nanoparticles to achieve high-efficiency electrocatalysis for oxygen reduction and ethanol oxidation in an alkaline *** leaching of Cu atoms by acetic acid exerts an additional compressive strain effect on the surface layers and exposes more active Pd atoms,which is beneficial for boosting the catalytic performance of a dealloyed catalyst for the oxygen reduction reaction(ORR)and the ethanol oxidation reaction(EOR).In particular,for ORR,the CuPd nanoparticles with a Pd/Cu molar ratio of 2:1 after acetic dealloying show a half-wave potential of 0.912 V(***)and a mass activity of 0.213 AmgPd^(-1) at 0.9 V,respectively,while for EOR,the same dealloyed sample has a mass activity and a specific activity of 8.4 Amg^(-1) and 8.23 mA cm^(-2),respectively,much better than their dealloyed counterparts at other temperatures and commercial Pd/C as well as a Pt/C catalyst.

关键词： compressive strain effect dealloying electrocatalysis ethanol oxidation reaction oxygen reduction reaction

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