European Journal of Inorganic Chemistry最新文献_第10页

Solvatomorphism and Anion Effects in Fluorinated MnIII Spin Crossover Complexes 氟化MnIII自旋交叉配合物的溶剂异构和阴离子效应

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-13 DOI: 10.1002/ejic.202400796

Conor T. Kelly, Vibe Boel Jakobsen, Aizuddin Sultan, Ross Jordan, Brendan Twamley, Peter Nockemann, Solveig Felton, Helge Müller-Bunz, Grace Genevieve Morgan

{"title":"Solvatomorphism and Anion Effects in Fluorinated MnIII Spin Crossover Complexes","authors":"Conor T. Kelly, Vibe Boel Jakobsen, Aizuddin Sultan, Ross Jordan, Brendan Twamley, Peter Nockemann, Solveig Felton, Helge Müller-Bunz, Grace Genevieve Morgan","doi":"10.1002/ejic.202400796","DOIUrl":"https://doi.org/10.1002/ejic.202400796","url":null,"abstract":"Eight new MnIII salts of the [MnIII(3,5-diF-sal2323)]X complex are reported, of which four show thermal spin crossover (SCO): 1a [MnIII(3,5-diF-sal2323)]PF6·0.33CH3CN, 1b [MnIII(3,5-diF-sal2323)]PF6·CH3CN, 1c [MnIII(3,5-diF-sal2323)]PF6, 2 [MnIII(3,5-diF-sal2323)]AsF6, 3 [MnIII(3,5-diF-sal2323)]NO3, 4 [MnIII(3,5-diF-sal2323)]Br, 5 [MnIII(3,5-diF-sal2323)]BF4, and 6 [MnIII(3,5-diF-sal2323)]OTf·0.66H2O. Solvatomorphism is observed in the PF6− salt, revealing one complex which undergoes gradual SCO (1a·0.33CH3CN), one that is fully high spin (1b·CH3CN); a third solvent-free solvatomorph 1c is also recovered where structural data indicate a spin triplet at 100 K. In 1a, three independent MnIII sites with spin state ordering of HS:LS:LS at 100 K and HS:IS:IS at 293 K are observed, where HS = high spin (S = 2), LS = low spin (S = 1), and IS = intermediate spin (i.e., an equilibrium of S = 1 and S = 2). Structural data are presented for all complexes, and magnetic data for 1a, 1b, 2, and 3.","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 15","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ejic.202400796","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Economic and Straightforward Synthesis of Heteroleptic Silver(I) Complexes bearing NHC and Bidentate Ligands 含NHC和双齿配体的杂电性银(I)配合物的经济简便合成

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-13 DOI: 10.1002/ejic.202500030

Dr. Ginevra Giobbio, Anaïs Montrieul, Jean-François Lohier, Prof. Dr. Rubén D. Costa, Dr. Sylvain Gaillard

引用次数: 0

The Structural Characterisation of new Pyridinyl Alcohol Cu(II) Complexes and their Application as Catalysts in the Oxidation of n–octane 新型吡啶醇Cu（II）配合物的结构表征及其在正辛烷氧化催化剂中的应用

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-12 DOI: 10.1002/ejic.202400783

Nijal K. Singh, Mzamo L. Shozi, Lynette Soobramoney, Sizwe J. Zamisa, Holger B. Friedrich

{"title":"The Structural Characterisation of new Pyridinyl Alcohol Cu(II) Complexes and their Application as Catalysts in the Oxidation of n–octane","authors":"Nijal K. Singh, Mzamo L. Shozi, Lynette Soobramoney, Sizwe J. Zamisa, Holger B. Friedrich","doi":"10.1002/ejic.202400783","DOIUrl":"https://doi.org/10.1002/ejic.202400783","url":null,"abstract":"In this study a series of pyridinyl alcohol ligands (2-pyridinyl-1-cyclohexanol (1), 2-pyridinyl-1,1-diphenyl methanol (2) and 2-pyridinyl-1-phenyl-1-isopropylmethanol (3) have been coordinated to Cu (Cu 1–3). These complexes have been characterised by single-crystal X-ray diffraction. The solid-state structures of the Cu complexes obtained were dependent on the temperature and method used to grow crystals. In the selective oxidation of n-octane the copper catalysts gave yields of up to 25 % towards C8 oxygenates with predominant selectivity to C2-C4 octanones. The exception was a chlorido-bridged dimer, which showed high selectivity to 1-octanol. Products from activation of the C-1 position predominately form in higher yield in the catalytic reactions of copper(II) complexes that exhibit narrower N−Cu−O bite angles. The activity of the Cu catalysts can be attributed to metal-ligand cooperative catalysis that involves the formation of Cu(II) peroxo intermediates. Characterisation of the recovered catalyst, in combination with the addition of a radical inhibitor during the partial oxidation reactions, indicated that the catalytic reaction progresses via a combination of an oxygen rebound mechanism and a radical chain reaction, with the latter mechanism usually dominating.","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 11","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ejic.202400783","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Flexible PVDF-HFP, Nickel MOF-based Hybrid Membrane as an Efficient Electrolyte for Lithium-Ion Batteries 柔性PVDF-HFP，镍mof基混合膜作为锂离子电池的高效电解质

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-12 DOI: 10.1002/ejic.202500075

Aparna Potdar, Dr. Soumava Biswas, Dr. Dev Kumar Thapa, Prof. Bharat Kale, Dr. Milind V. Kulkarni, Prof. Murthy Chavali

{"title":"Flexible PVDF-HFP, Nickel MOF-based Hybrid Membrane as an Efficient Electrolyte for Lithium-Ion Batteries","authors":"Aparna Potdar, Dr. Soumava Biswas, Dr. Dev Kumar Thapa, Prof. Bharat Kale, Dr. Milind V. Kulkarni, Prof. Murthy Chavali","doi":"10.1002/ejic.202500075","DOIUrl":"https://doi.org/10.1002/ejic.202500075","url":null,"abstract":"The present investigation demonstrates a highly stable composite polymer electrolyte (CPE) membrane (NiPF6), designed to enhance the performance of solid-state lithium-ion batteries. The new CPE membrane has been fabricated by the blending of Ni-BDC metal-organic framework (MOF) (BDC: 1,4-benzenedicarboxylate), lithium salt, and PVDF-HFP (poly (vinylidene fluoride-co-hexa fluoropropylene)). The XRD of the CPE membrane clearly shows the presence of 2D Ni-BDC MOF. The mechanical properties and flame test validate the robustness of the membrane. The detailed morphological study of the membrane shows the presence of a porous surface and a layered structure. The CPE membrane exhibits a high ionic conductivity i. e. 1.5×10−4 S/cm at room temperature, which has increased to 5.99×10−4 S/cm at 55 °C. Considering the high ionic conductivity of the CPE membrane it has been used as an electrolyte for Li-ion cells. The Li-ion cell fabricated using the Ni-BDC CPE membrane has achieved a discharge capacity of 169.52 mAh/g @ 0.1 C rate, with impressive capacity retention(97 %). The cell showed a 149 mAh/g discharge capacity @1 C with 85 % retention over 300 cycles. Further, it delivered a capacity of around 128.55 mAh/g @ 2 C with 81 % capacity retention at 200 cycles. This enhancement is attributed to the incorporation of 2D Ni-BDC MOF, which has a porous and layered structure that might significantly improve the Li-ion conduction path. Hence, the enhancement in ionic conductivity is self-explanatory. The stable Li-ion conduction path might be formed at a higher C rate, hence the retention capacity has been increased @2 C rate compared to 1 C. More significantly, this is a promising approach for advancing solid-state lithium-ion battery technology by using new composite polymer electrolytes with efficient performance at room temperature.","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 14","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Theoretical Study of Local Environmental Effect on Electronic Structure of M-Cluster 局部环境对m -簇电子结构影响的理论研究

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-12 DOI: 10.1002/ejic.202500016

Kazuki Honjo, Taigo Kamimura, Kohei Tada, Ryohei Kishi, Yasutaka Kitagawa

引用次数: 0

Influence of Ce Doping on the Activity of Ce-Cr/S-1 Catalysts for the Oxidative Dehydrogenation of Propane with CO2 Ce掺杂对丙烷CO2氧化脱氢Ce- cr /S-1催化剂活性的影响

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-12 DOI: 10.1002/ejic.202400790

Limao Fan, Shuo Wang, Wanchang Li, Prof. Lei Zhang, Prof. Kai Huang

{"title":"Influence of Ce Doping on the Activity of Ce-Cr/S-1 Catalysts for the Oxidative Dehydrogenation of Propane with CO2","authors":"Limao Fan, Shuo Wang, Wanchang Li, Prof. Lei Zhang, Prof. Kai Huang","doi":"10.1002/ejic.202400790","DOIUrl":"https://doi.org/10.1002/ejic.202400790","url":null,"abstract":"A Ce-modified Cr-based catalyst supported on Silicalite-1 (S-1) zeolite was synthesized and used for CO2-ODP (CO2-assisted oxidative dehydrogenation of propane). Then, reaction and calcination temperature effects on catalytic performance were further studied. The structure of the catalyst was studied by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction of hydrogen (H2-TPR), and diffuse reflectance ultraviolet-visible spectroscopy (UV-vis). The results show that the distribution of Cr on the catalyst's surface and the amount of lattice oxygen can be changed by introducing Ce into the catalyst to modify the catalyst. After Ce modification, more polymerized Cr6+ sites and lattice oxygen were formed on the catalyst's surface, which was conducive to increasing the activity and selectivity of the catalyst and reducing the amount of carbon deposition on the catalyst surface. By decreasing the calcination temperature, the amount of polymerized Cr6+ sites and lattice oxygen can be further increased.","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 9","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Recent Advances in Efficient Seawater Hydrogen Evolution Electrocatalysts 高效海水析氢电催化剂研究进展

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-11 DOI: 10.1002/ejic.202400831

Yafu Wang, Houen Zhu, Ting Ou, TianXing Xing, Yan Liang, Rui Ren, Yulan Gu, Ligang Liu, Yanyong Su, Jiangwei Zhang

{"title":"Recent Advances in Efficient Seawater Hydrogen Evolution Electrocatalysts","authors":"Yafu Wang, Houen Zhu, Ting Ou, TianXing Xing, Yan Liang, Rui Ren, Yulan Gu, Ligang Liu, Yanyong Su, Jiangwei Zhang","doi":"10.1002/ejic.202400831","DOIUrl":"https://doi.org/10.1002/ejic.202400831","url":null,"abstract":"Hydrogen is widely recognized as a clean energy source with vast potential to facilitate the shift toward sustainable energy systems. Seawater electrolysis presents a promising approach for large-scale hydrogen production, capitalizing on the abundance of seawater and highlighting its significant role in future hydrogen applications. However, despite its scalability, major challenges persist—most notably, the development of high-performance, durable electrocatalysts capable of continuous operation while resisting the corrosive effects of chloride ions in seawater. In recent years, substantial progress has been achieved in the development of efficient electrocatalysts for seawater electrolysis. This review provides an in-depth analysis of recent developments in seawater hydrogen evolution catalysts, systematically discussing hydrogen production fundamentals, key reaction mechanisms, and persistent challenges. We compare the performance of noble metal and transition metal catalysts for seawater hydrogenation reactions and analyze their advantages and limitations. Subsequently, the focus is on exploring new ways to enhance catalytic performance through strategies such as improving catalyst conductivity, optimizing electronic effects, and enhancing catalyst synergies to facilitate efficient and stable progress in electrocatalyst design, and concludes with insights into future prospects in this field.","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 11","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reaction Chemistry of Zirconocene(II) with Ferrocenyl Carbonyls§ 二茂锆（II）与二茂铁羰基的反应化学

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-11 DOI: 10.1002/ejic.202500022

Sebastian Notz, Alexander Voigt, Marcus Weber, Simon H. F. Schreiner, Tobias Rüffer, Heinrich Lang

{"title":"Reaction Chemistry of Zirconocene(II) with Ferrocenyl Carbonyls§","authors":"Sebastian Notz, Alexander Voigt, Marcus Weber, Simon H. F. Schreiner, Tobias Rüffer, Heinrich Lang","doi":"10.1002/ejic.202500022","DOIUrl":"https://doi.org/10.1002/ejic.202500022","url":null,"abstract":"Treatment of {Zr}(η2-Me3SiC≡CSiMe3)(py) ({Zr}=Zr(η5-C5H5)2; py=C5H5N) (1) with FcC(O)H (Fc=Fe(η5-C5H5)(η5-C5H4)) (2 a) gives dimeric [{Zr}(η2-OCHFc)]2 (3), while the reaction of 1 with ketone FcC(O)Ph (2 b) produces monomeric metallaoxiran [{Zr}(η2-OCPhFc)(Ph)] (4). In contrast, compound 1 forms [{Zr}(O=CFc2)2] (5) in presence of FcC(O)Fc (2 c). The structures of 3–5 in the solid state were determined by single crystal X-ray analysis. In 3 two {Zr}(η2-OCHFc) building blocks are connected to each other over oxygen bridges with the aldehydes being η2-coordinated. By exchanging aldehyde 2 a by ketone 2 b, monomeric 4 is accessible with a σ-bonded phenylate ligand and a ketone bonded in a η2-fashion to Zr(IV). In contrast, within 5 two Fc2C=O ketones are datively bonded to a zirconocene unit with Zr in the oxidation state II, demonstrating a new family of compounds in which metallocene ketones are coordinated to a group 4 metal. Further, compounds 3–5 were characterized by IR spectroscopy and 3, 4 were investigated by matrix assisted laser desorption/ionization mass spectrometry. In case of 5, its crystallisation was tracked by NMR spectroscopy and its reaction towards CH2Cl2 was investigated by high resolution mass spectrometry.","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 14","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ejic.202500022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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From Framework to Extra-framework, Synthesis of Encapsulated Fe-ZSM-5 Zeolite with Enhanced Catalytic Cracking 从框架到外框架：包封Fe-ZSM-5沸石的催化裂化合成

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-09 DOI: 10.1002/ejic.202400817

Yunpeng Zhang, Ying Ouyang, Longxiao Yang, Ne Ni, Enhui Xing, Yibin Luo, Xingtian Shu

{"title":"From Framework to Extra-framework, Synthesis of Encapsulated Fe-ZSM-5 Zeolite with Enhanced Catalytic Cracking","authors":"Yunpeng Zhang, Ying Ouyang, Longxiao Yang, Ne Ni, Enhui Xing, Yibin Luo, Xingtian Shu","doi":"10.1002/ejic.202400817","DOIUrl":"https://doi.org/10.1002/ejic.202400817","url":null,"abstract":"With the diversification of hydrocarbon feedstocks, improving selectivity of light olefins at high conversion has become a technical bottleneck in Fluid Catalytic Cracking (FCC) processes. The rational design of bifunctional catalysts, which possess both acidic sites and dehydrogenation sites is crucial for enhancing the activity for catalytic cracking of naphtha to selectively produce light olefins. In this study, we synthesized ZSM-5 zeolite (SiO2/Al2O3=35~40) with Fe incorporated into ZSM-5 framework, as confirmed by XPS and H2-TPR characterizations, in the presence of triethanolamine without the use of an organic template. Interestingly minimal triethanolamine was found to be trapped within the ZSM-5 zeolite, as demonstrated by TG-MS and 13C CP/MAS NMR results. Most of triethanolamine remained in the filtrate, facilitating the easy reuse of organic ligands. Furthermore, hydrothermal treatment resulted in the formation of highly dispersed extra-framework FeOx species with dehydrogenation capability within the channels of the ZSM-5 zeolite, significantly enhancing the conversion and olefin yields of catalytic cracking with n-tetradecane, ethylcyclohexane and naphtha as feedstocks.","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 14","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photocatalytic Efficiency Improvement of Porous TiO2 Immobilized by a Pd-Te Complex for H2 Production by Water Splitting Pd-Te配合物固定化多孔TiO2水裂解制氢光催化效率的提高

IF 2.2 4区化学

European Journal of Inorganic Chemistry Pub Date : 2025-03-07 DOI: 10.1002/ejic.202400806

Camila N. Cechin, Tanize Bortolotto, Andressa Lunardi, Renaldo M. da Silva Jr., Robert A. Burrow, Bernardo A. Iglesias, Ernesto S. Lang, Bárbara Tirloni, Shirley Nakagaki

{"title":"Photocatalytic Efficiency Improvement of Porous TiO2 Immobilized by a Pd-Te Complex for H2 Production by Water Splitting","authors":"Camila N. Cechin, Tanize Bortolotto, Andressa Lunardi, Renaldo M. da Silva Jr., Robert A. Burrow, Bernardo A. Iglesias, Ernesto S. Lang, Bárbara Tirloni, Shirley Nakagaki","doi":"10.1002/ejic.202400806","DOIUrl":"https://doi.org/10.1002/ejic.202400806","url":null,"abstract":"Four photocatalysts solids were designed using a new Pd−Te complex, [Pd2(μ-TePh)2(bipy)2](PF6)2, immobilized over titania to improve its solar energy harvesting ability for enhancing H2 production by water splitting under sunlight (300 W Xe/Hg lamp). Firstly, the photocatalytic performance for H2 production of the porous TiO2 supports (m-TiO2), synthesized with varying textural properties and anatase/rutile contents, were compared. Furthermore, cyclic voltammetry measurements revealed that the Pd−Te complex can catalyze protons to hydrogen under weak acidic conditions. Then, different wt % concentrations of the complex were immobilized over the m-TiO2 of the greatest performance and also over Degussa P25 (commercial titania) for photocatalytic comparison. Among the newly designed photocatalysts, the one containing only 4 wt% of Pd−Te complex over m-TiO2 showed the greatest hydrogen production (3631 μmol g−1 h−1), which is 69 times greater than that of the pure m-TiO2 and 378 times higher than that of the pure Pd−Te complex. These results suggested the crucial role of the Pd−Te complex when combined with m-TiO2, promoting greater photocatalytic performance compared to the pure support. This outcome inspires an extensive investigation of metal complexes combined with semiconductors to improve their ability for photocatalytic H2 production by water splitting under sunlight.","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 13","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0