Chemistry - An Asian Journal最新文献_第9页

Mild Hydrogenation of 2-Furoic Acid by Pt Nanoparticles Dispersed in a Hierarchical ZSM-5 Zeolite 分散在分级ZSM-5沸石中的Pt纳米粒子对2-糠酸的温和加氢反应。

IF 4.1 3区化学

Chemistry - An Asian Journal Pub Date : 2023-10-04 DOI: 10.1002/asia.202300733

Peerapol Pornsetmetakul, Narasiri Maineawklang, Anittha Prasertsab, Dr. Saros Salakhum, Prof. Dr. Emiel J. M. Hensen, Assoc. Prof. Dr. Chularat Wattanakit

{"title":"Mild Hydrogenation of 2-Furoic Acid by Pt Nanoparticles Dispersed in a Hierarchical ZSM-5 Zeolite","authors":"Peerapol Pornsetmetakul, Narasiri Maineawklang, Anittha Prasertsab, Dr. Saros Salakhum, Prof. Dr. Emiel J. M. Hensen, Assoc. Prof. Dr. Chularat Wattanakit","doi":"10.1002/asia.202300733","DOIUrl":"10.1002/asia.202300733","url":null,"abstract":"Hydrogenation of biobased compounds can add value to platform molecules obtained from biomass refining. Herein, we explore the hydrogenation of 2-furoic acid (2-furancarboxylic acid, FCA), a derivative of furfural, with H2 generated in situ by NaBH4 hydrolysis at ambient conditions. Nearly complete conversion of FCA was obtained with tetrahydrofuroic acid (THFA) and 5-hydroxyvaleric acid (5-HVA) as the only two reaction products over Pt nanoparticles supported on hierarchical ZSM-5. Small Pt nanoparticles (2 to 3 nm) were stabilized by ZSM-5 nanosheets. At an optimized Pt loading, the Pt nanoparticles can catalyze the hydrolysis of NaBH4 and the subsequent hydrogenation of FCA with the assistance of Brønsted acid sites. Nanostructuring ZSM-5 into nanosheets and its acidity contributes to the stability of the dispersed Pt nanoparticles. Deactivation due to NaBO2 deposition on the Pt particles can be countered by a simple washing treatment. Overall, this approach shows the promise of mild hydrogenation of biobased feedstock coupled with NaBH4 hydrolysis.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"18 22","pages":""},"PeriodicalIF":4.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41094427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Synthesis of Thiophene-Substituted Ketones via Manganese-Catalyzed Dehydrogenative Coupling Reaction 锰催化脱氢偶联反应合成噻吩取代酮。

IF 4.1 3区化学

Chemistry - An Asian Journal Pub Date : 2023-10-03 DOI: 10.1002/asia.202300725

Xiaoyu Zhang, Yujie Zhang, Jiaqiao Ding, Liusheng Wang, Weihua Chen, Xinyan Li, Dr. Bing Cui, Prof. Mingqin Zhao, Dr. Zhihui Shao

引用次数: 0

Utilizing Nanostructured Materials for Hydrogen Generation, Storage, and Diverse Applications 利用纳米结构材料发电、储存和多样化应用。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2023-10-03 DOI: 10.1002/asia.202300593

Mohsin Saeed, Hadi M. Marwani, Umer Shahzad, Abdullah M. Asiri, Ijaz Hussain, Mohammed M. Rahman

引用次数: 0

Reaction Induced Conformational Change in Polyindole: Polyindole/PVA Film as Biomimetic Sensors of Temperature and Electrical Energetic Conditions 反应诱导聚吲哚的构象变化：聚吲哚/PVA膜作为温度和电能条件的仿生传感器。

IF 4.1 3区化学

Chemistry - An Asian Journal Pub Date : 2023-10-03 DOI: 10.1002/asia.202300742

Lijin Rajan, Aranhikundan Shabeeba, Madari Palliyalil Sidheekha, Dr. Yahya A. Ismail

{"title":"Reaction Induced Conformational Change in Polyindole: Polyindole/PVA Film as Biomimetic Sensors of Temperature and Electrical Energetic Conditions","authors":"Lijin Rajan, Aranhikundan Shabeeba, Madari Palliyalil Sidheekha, Dr. Yahya A. Ismail","doi":"10.1002/asia.202300742","DOIUrl":"10.1002/asia.202300742","url":null,"abstract":"Conducting polymers can mimic the sensing characteristics of biological muscles through utilizing their unique electrochemical reactions. As these reactions occur, alterations in composition prompt changes in biomimetic properties, such as shifts in volume, brought about by the insertion of anions and solvent molecules, resulting in conformational movements. Similar to biological muscles, these electrochemical reaction senses the working variables affecting the reaction rate, through the same two connecting wires. The influence of working temperature and electrical energetic condition on the conformational movements of polyindole manifested as the cooperative actuation of the polymer chain is verified here using a polyindole-coated polyvinyl alcohol (PIN/PVA) film. Cyclic voltammetric (CV) studies revealed that the extent of reaction of polyindole varies linearly with temperature and scan rate. The logarithmic dependence of redox charge obtained from coulovoltammogram with inverse of temperature further proved the temperature sensing characteristics and the influence of temperature on the cooperative actuation of the film. The conformational relaxation increases as the temperature increases through hosting higher number of counter anions with the solvent molecule. The extension of the redox reaction was found to decrease as the scan rate increases. The double logarithmic relation between the consumed redox charge and the scan rate has proved that the electrical energetic condition can influence the conformational movement in a reversible manner. It is also verified from Chronopotentiometric (CP) studies that the consumed electrical energy during the reaction varies linearly with the change in temperature. The results suggest that the PIN/PVA film can act as a biomimetic macro molecular sensor of working temperature and electrical energetic condition as biological muscles do.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"18 22","pages":""},"PeriodicalIF":4.1,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41095893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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Dual Role of TiO(acac)2 as a Reagent and an Activator/Catalyst: A Study on the Solvent Dependent Product Formation TiO（acac）2作为试剂和活化剂/催化剂的双重作用：溶剂依赖性产物形成的研究。

IF 4.1 3区化学

Chemistry - An Asian Journal Pub Date : 2023-10-02 DOI: 10.1002/asia.202300738

Kishor Kumar Chouhan, Pinaki Nad, Dr. Arup Mukherjee

引用次数: 0

Visible-Light-Driven Furfural Oxidation over CuOx/Nb2O5 可见光下CuOx/Nb2O5光催化氧化糠醛。

IF 4.1 3区化学

Chemistry - An Asian Journal Pub Date : 2023-09-29 DOI: 10.1002/asia.202300732

Puning Ren, Yue Zhou, Kaiyi Su, Lulu Sun, Dr. Nengchao Luo, Prof. Feng Wang

{"title":"Visible-Light-Driven Furfural Oxidation over CuOx/Nb2O5","authors":"Puning Ren, Yue Zhou, Kaiyi Su, Lulu Sun, Dr. Nengchao Luo, Prof. Feng Wang","doi":"10.1002/asia.202300732","DOIUrl":"10.1002/asia.202300732","url":null,"abstract":"Maleic anhydride (MA) is an important polyester monomer that can be produced from oxidizing renewable furfural derived from biomass. However, MA generation from furfural requires harsh reaction conditions, and suffers from low efficiency and solvent corrosion. Herein, we design a Nb2O5 photocatalyst loaded of highly dispersed CuOx (CuOx/Nb2O5), which selectively catalyzes furfural oxidation to MA and the precursor (5-hydroxy-2(5H)-furanone, HF). Due to CuOx loading and forming a complex of ligand to metal charge transfer (LMCT) between the Nb2O5 surface and adsorbed furfural, the CuOx/Nb2O5 absorbs visible light to activate furfural though Nb2O5 has a large band-gap energy (3.2 eV). Singlet oxygen (1O2) is the key active species for C−C bond cleavage and CO generation. MA and HF is produced with a combined yield of 59 % under optimized conditions. This work provides a mild way to provide renewable maleic anhydride via oxidative C−C bond cleavage.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"18 22","pages":""},"PeriodicalIF":4.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41110375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The Development of Aldehyde Catalytic System 醛催化体系的发展。

IF 4.1 3区化学

Chemistry - An Asian Journal Pub Date : 2023-09-27 DOI: 10.1002/asia.202300731

Jinli Chen, Xiaoqun Yang, Yixian Huang, Zhiguo Zheng, Prof. Dr. Tingting Li

引用次数: 0

Ag6Cu8(C=CAr)14(DPPB)2: A Rigid Ligand Co-Protected Bimetallic Silver(I)-Copper(I) Cluster with Room-Temperature Luminescence Ag6Cu8（C≠CAr）14（DPPB）2：室温发光的刚性配体共保护双金属银（I）-铜（I）团簇。

IF 4.1 3区化学

Chemistry - An Asian Journal Pub Date : 2023-09-27 DOI: 10.1002/asia.202300844

Dr. Jun-Ling Jin, Sheng-Fa Zhang, Dr. Pei Zhao, Dr. Yang-Lin Shen, Jun-Jie Fang, Zheng Liu, Prof. Dr. Masahiro Ehara, Prof. Dr. Li-Wei Mi, Dr. Yun-Peng Xie, Dr. Xing Lu

{"title":"Ag6Cu8(C=CAr)14(DPPB)2: A Rigid Ligand Co-Protected Bimetallic Silver(I)-Copper(I) Cluster with Room-Temperature Luminescence","authors":"Dr. Jun-Ling Jin, Sheng-Fa Zhang, Dr. Pei Zhao, Dr. Yang-Lin Shen, Jun-Jie Fang, Zheng Liu, Prof. Dr. Masahiro Ehara, Prof. Dr. Li-Wei Mi, Dr. Yun-Peng Xie, Dr. Xing Lu","doi":"10.1002/asia.202300844","DOIUrl":"10.1002/asia.202300844","url":null,"abstract":"Metal clusters have become increasingly important in various applications, with ligands playing a crucial role in their construction. In this study, we synthesized a bimetallic cluster, Ag6Cu8(C=CAr)14(DPPB)2 (Ag6Cu8), using a rigid acetylene ligand, 3,5-bis(trifluoromethyl)phenylacetylide. Through single-crystal structure characterization, we discovered that the butterfly-shaped Ag2Cu2 motifs were subject to distortion due to steric hindrance imposed by the rigid ligand. These motifs assembled together through shared vertices and edges. Mass spectrometry analysis revealed that the primary fragments detected during electrospray ionization (ESI) testing corresponded to the Ag2Cu2 motifs. Furthermore, we conducted a comprehensive investigation of the cluster's solution properties employing 31P NMR, UV-vis absorption, and photoluminescent measurements. In contrast to previously reported Ag/Cu bimetallic clusters protected by flexible ligands, Ag6Cu8 protected by rigid ligands exhibited intriguing room temperature fluorescence properties alongside excellent thermal stability. DFT calculations on Ag6Cu8 and Ag6Cu8 with the rigid aromatic ring removed revealed that the presence of the rigid aromatic ring can lower the electronic energy levels of the cluster, and reduce the energy gap from 4.05 eV to 3.45 eV. Moreover, the rigid ligand further suppressed the non-radiative transition process, leading to room temperature fluorescence emission.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"18 22","pages":""},"PeriodicalIF":4.1,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41095087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Vanadium-catalyzed Hydration of 2-Cyanopyrazine to Pyrazinamide with Unique Substrate Specificity 钒催化2-氰基吡嗪水合制备吡嗪酰胺，具有独特的底物特异性。

IF 4.1 3区化学

Chemistry - An Asian Journal Pub Date : 2023-09-27 DOI: 10.1002/asia.202300741

Zhongxu Guo, Dr. Zhongtian Du, Yanbin Zhao, Xiaoyu Shen, Prof. Dr. Changhai Liang

引用次数: 0

Carbon Nanotube-encapsulated Chestnut Inner Shell O,N-doped Graded Porous Carbon as Stable and High-Sulfur Loading Electrode for Lithium-Sulfur Batteries 碳纳米管包覆栗子内壳层O，N掺杂分级多孔碳作为锂硫电池的稳定高硫负载电极。

IF 4.1 3区化学

Chemistry - An Asian Journal Pub Date : 2023-09-27 DOI: 10.1002/asia.202300604

Pengfei Song, Lu Han, Liuyan Zhu, Rui Zhang, Yingjie Chai, Zijie Lei, Lijiang Wang, Sibo Shen

{"title":"Carbon Nanotube-encapsulated Chestnut Inner Shell O,N-doped Graded Porous Carbon as Stable and High-Sulfur Loading Electrode for Lithium-Sulfur Batteries","authors":"Pengfei Song, Lu Han, Liuyan Zhu, Rui Zhang, Yingjie Chai, Zijie Lei, Lijiang Wang, Sibo Shen","doi":"10.1002/asia.202300604","DOIUrl":"10.1002/asia.202300604","url":null,"abstract":"The shuttle effect of lithium-sulfur (Li−S) batteries and the poor conductivity of sulfur (S) and lithium polysulfide severely limit their practical applications. Currently, compounding carbon materials with S is one of the effective ways to solve this problem. Therefore, green, low-cost chestnut inner shell biochar (CISC) with graded porous structure was used as the S carrier in this experiment, and carbon nanotubes (CNTs) coating was employed as the S protective layer to improve the electrical conductivity and inhibit the shuttle effect. The results showed that the CISC prepared in this experiment had a relatively high specific surface area (1135.11 m2 g−1), and the S loading rate was as high as 65.72 %. The graded porous structure and high specific surface area of CISC can increase the loading rate of S and thus increase the battery capacity. Meanwhile, the naturally contained O and N elements can improve the chemisorption of S. The initial discharge capacity of the CISC@S/CNTs battery at 0.1 C is 967.3 mAh g−1, and the capacity retention rate is 74.3 % after 500 cycles. The unique composite structure improves the battery‘s electrical conductivity, reduces the dissolution of polysulfides, and enhances the battery cycle stability.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"18 22","pages":""},"PeriodicalIF":4.1,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41098389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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