检索结果-南通市图书馆

Sulfonic groups functionalized Zr-metal organic framework for highly catalytic transfer hydrogenation of furfural to furfuryl alcohol

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第8期31卷 411-417,I0011页

作者： Jingcheng Wu Dong Liang Xiangbo Song Tingsen Liu Tianyi Xu Shuangyin Wang Yuqin Zou State Key Laboratory of Chem/Bio-Sensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of EducationCollege of Chemistry and Chemical Engineeringthe National Supercomputer Centers in ChangshaHunan UniversityChangsha 410082HunanChina Shenzhen Institute of Hunan University Shenzhen 518057GuangdongChina School of Physical and Electronic Sciences Chuxiong Normal UniversityChuxiong 675099YunnanChina

The highly selective catalytic transfer hydrogenation(CTH)of furfural(FF)to furfuryl alcohol(FOL)is a significant route of biomass ***,a series microporous Zr-metal organic framework(ZrMOF)functionalized by sulfonic groups are *** on the comprehensive structural characterizations by means of X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),N2 physisorption,Thermogravimetric(TG)and Fourier transformed infrared spectroscopy(FTIR),we find that sulfonic acid(–SO_(3)H)functional groups are tethered on the UIO-66 without affecting the structure of the *** characterizations(NH_(3)-TPD,CO_(2)-TPD,and in-situ FTIR)demonstrate that modifying of sulfonic groups on UIO-66 results in the formation of stronger Lewis acidic-basic and Brnsted acidis *** cooperative role of the versatile Lewis acidic-basic and Brnsted acidic sites in 60%mol fraction of sulfonic acid-containing UIO-66(UIO-S_(0.6))retain high surface area and exhibit excellent catalytic performance of 94.7%FOL yield and 16.9 h^(-1).turnover number(TOF)under mild *** experiments reveal that the activation energy of the CTH of furfural(FF)over UIO-S_(0.6) catalyst is as low as 50.8 k J mol^(-1).Besides,the hydrogen transfer mechanism is investigated through isotope labeling experiments,exhibiting that theβ-H in isopropanol is transferred to the a-C of FF by forming six-membered intermediates on the Lewis acidic-basic and Brnsted acidic sites of the UIO-S_(0.6),which is the rate-determining step in the formation of FOL.

关键词： Hydrogenation Biomass metal organic framework Biorefinery

Nanoporous metal organic framework materials for hydrogen storage

在线全文

学校读者我要写书评

暂无评论

Particuology 2009年第2期7卷 129-140页

作者： Bo Xiao Qingchun Yuan EaStChem School of Chemistry Purdie Building North Haugh University of St. Andrews Fife St. Andrews KY16 9ST UK Institute of Particle Science and Engineering School of Processing Environmental & Mineral Engineering University of Leeds Houldworth Building Leeds LS2 9JT UK

Hydrogen is expected to play an important role in future transportation as a promising alternative clean energy source to carbon-based fuels. One of the key challenges to commercialize hydrogen energy is to develop appropriate onboard hydrogen storage systems, capable of charging and discharging large quantities of hydrogen with fast enough kinetics to meet commercial requirements. metal organic framework （MOF） is a new type of inorganic and organic hybrid nanoporous particulate materials. Its diverse networks can enhance hydrogen storage through tuning the structure and property of MOFs. The MOF materials so far developed adsorb hydrogen through weak dispersion interactions, which allow significant quantity of hydrogen to be stored at cryogenic temperatures with fast kinetics. Novel MOFs are being developed to strengthen the interactions between hydrogen and MOFs in order to store hydrogen under ambient conditions. This review surveys the development of such candidate materials, their performance and future research needs.

关键词： Hydrogen storage metal organic framework Nanoporous particulate materials

metal organic framework‐ionic liquid hybrid catalysts for the selective electrochemical reduction of CO_(2) to CH4

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2022年第7期43卷 1687-1696页

作者： Ernest Pahuyo Delmo Yian Wang Jing Wang Shangqian Zhu Tiehuai Li Xueping Qin Yibo Tian Qinglan Zhao Juhee Jang Yinuo Wang Meng Gu Lili Zhang Minhua Shao Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongChina Jiangsu Key Laboratory for Chemistry of Low‐Dimension Materials Huaiyin Normal UniversityHuaian 223300JiangsuChina Energy Institute and Chinese National Engineering Research Center for Control&Treatment of Heavy Metal PollutionThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina

The electrochemical reduction of CO_(2) towards hydrocarbons is a promising technology that can utilize CO_(2) and prevent its atmospheric accumulation while simultaneously storing renewable en‐***,current CO_(2) electrolyzers remain impractical on a large scale due to the low current densities and faradaic efficiencies(FE)on various *** this study,hybrid HKUST‐1 metal‐organic framework‒fluorinated imidazolium‐based room temperature ionic liquid(RTIL)electrocatalysts are designed to selectively reduce CO_(2) to CH_(4).An impressive FE of 65.5%towards CH_(4) at-1.13 V is achieved for the HKUST‐1/[BMIM][PF_(6)]hybrid,with a stable FE greater than 50%maintained for at least 9 h in an H‐*** observed improvements are attributed to the increased local CO_(2) concentration and the improved CO_(2)‐to‐CH_(4) thermodynamics in the presence of the RTIL molecules adsorbed on the HKUST‐1‐derived Cu *** findings offer a novel approach of immobilizing RTIL co‐catalysts within porous frameworks for CO_(2) electroreduction applications.

关键词： CO_(2)electroreduction Methane Room temperature ionic liquid metal organic framework Catalyst design DFT calculation

Zinc-based metal organic framework with antibacterial and anti-inflammatory properties for promoting wound healing

在线全文

学校读者我要写书评

暂无评论

Regenerative Biomaterials 2022年第1期9卷 163-174页

作者： Yuting Chen Jinhong Cai Dachang Liu Shuhan Liu Doudou Lei Li Zheng Qingjun Wei Ming Gao Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration The First Affiliated Hospital of Guangxi Medical UniversityNo.22 Shuangyong RoadQingxiu DistrictNanning 530021China Department of Orthopaedics Trauma and Hand Surgery The First Affiliated Hospital of Guangxi Medical UniversityNo.6 Shuangyong RoadQingxiu DistrictNanning 530021China Guangxi Collaborative Innovation Center of Regenerative Medicine and Medical Bioresource Development and Application The First Affiliated Hospital of Guangxi Medical UniversityNo.22 Shuangyong RoadQingxiu DistrictNanning 530021China Guangxi Key Laboratory of Regenerative Medicine The First Affiliated Hospital of Guangxi Medical UniversityNo.22 Shuangyong RoadQingxiu DistrictNanning 530021China

The synergistic effect of antibacterial and anti-inflammatory is needed to overcome the problem of wound healing *** on the favorable antibacterial and anti-inflammatory effect of zinc ions(Zn^(2+))and the physicochemical properties of metal organic frameworks(MOFs),we prepared nanosized zinc-based MOF:Zn-BTC with the ability to slowly release Zn^(2+).In cellular levels,Zn-BTC possessed lower toxicity to fibroblasts and enhanced capacity of cell proliferation and *** also had good bactericidal effect on multiple drug-resistant bacteria by reducing 41.4%MRSA and 47.2%Escherichia *** addition,Zn-BTC also displayed the ability of lowering the expression of antioxidant genes:superoxide dismutase 1,superoxide dismutase 2 and interleukin 6,and enhancing the expression of wound healing genes:transforming growth factors-b and type I ***,it also demonstrated that Zn-BTC could effectively improve the skin wound healing of SD rats and had no toxicity on major *** favorable biocompatibility,antibacterial and anti-inflammatory properties of Zn-BTC gave a new insight of designing novel MOFs for promoting skin wound healing.

关键词： zinc ions metal organic framework antibacterial anti-inflammatory skin wound healing

Fe-Based metal-organic framework and Its Derivatives for Reversible Lithium Storage

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2017年第8期33卷 768-774页

作者： Yan Jin Chongchong Zhao Yichao Lin Deyu Wang Liang Chen Cai Shen Chinese Academy of Sdences Ningbo Institute of Materials Technology&EngineeringNingbo 315201China

The use of a Fe-based metal organic framework（MOF）, namely MIL-88B（Fe）, as active material for lithium ion batteries（LIBs） is reported for the first time in the present work. Fe-based MOF demonstrated high capacity, excellent cycling stability and rate performance when used as anode. A highly reversible capacity of 680 mAhg^（-1） after 500 cycles at a current density of 200 m A g^（-1） was obtained. In addition, Fe2O3 and Fe3O4/C composites were obtained from Fe-based MOFs through thermal treatment. Both Fe2O3 and Fe3O4/C composites demonstrated high capacity and excellent cycling stability.

关键词： Lithium ion battery Anode metal organic framework metal oxide

metal-organic framework Enabling Poly(Vinylidene Fluoride)-Based Polymer Electrolyte for Dendrite-Free and Long-Lifespan Sodium metal Batteries

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第1期7卷 68-76页

作者： Yusi Lei Liang Yue Yuruo Qi Yubin Niu Shujuan Bao Jie Song Maowen Xu Faculty of Materials and Energy Institute for Clean Energy&Advanced MaterialsSouthwest UniversityChongqing 400715China Shandong Zero-One-Four Advanced Materials Co. Ltd.Feicheng 271099China

Sodium dentrite formed by uneven plating/stripping can reduce the utilization of active sodium with poor cyclic stability and,more importantly,cause internal short circuit and lead to thermal runaway and ***,sodium dendrites and their related problems seriously hinder the practical application of sodium metal batteries(SMBs).Herein,a design concept for the incorporation of metal-organic framework(MOF)in polymer matrix(polyvinylidene fluoride-hexafluoropropylene)is practiced to prepare a novel gel polymer electrolyte(PH@MOF polymer-based electrolyte[GPE])and thus to achieve high-performance *** addition of the MOF particles can not only reduce the movement hindrance of polymer chains to promote the transfer of Na^(+)but also anchor anions by virtue of their negative charge to reduce polarization during electrochemical reaction.A stable cycling performance with tiny overpotential for over 800 h at a current density of 5 mA cm^(-2)with areal capacity of 5 mA h cm^(-2)is achieved by symmetric cells based on the resulted GPE while the Na_(3)V_(2)O_(2)(PO_(4))_(2)F@rGO(NVOPF)|PH@MOF|Nacell also displays impressive specific cycling capacity(113.3 mA h g^(-1)at 1 C)and rate capability with considerable capacity retention.

关键词： dendrite-free gel polymer electrolyte metal organic framework sodium batteries

Synthesis and Characterization of a New metal-organic framework with Nou Topology

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2015年第6期34卷 894-898页

作者： YANG E LIN Li-Xiang DING Qing-Rong LIN Zheng-Huan LING Qi-Dan College of Materials Science & Engineering Fujian Normal University State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter the Chinese Academy of Sciences College of Chemistry & Chemistry Engineering Fujian Normal University

A new compound, [H2N（CH3）2]2[Zn（btec）]H20 （1, H4btec = 1,2,4,5-benzenetetra- carboxylic acid） has been solvothermally synthesized and structurally characterized by single- crystal X-ray diffraction. The crystal structure is of monoclinic, space group P21/c with a = 9.5741（3）, b = 14.5044（4）, c = 13.7329（5） A,β = 100.582（4）°, V = 1874.61（10） As, C14H20N2O9Zn, Mr = 425.7, Z = 4, Dc = 1.387 g/cm3,μ = 1.349 mm^-1, F（000） = 776, R = 0.0560 and wR = 0.1684 for 2834 observed reflections （1 〉 2a（I））. Compound 1 based onμ4-btec and tetrahedral building unit features a three-dimensional （3D） anionic framework with mixed connected nou topology. The luminescent property and thermogravimetric analysis of compound 1 are investigated.

关键词： solvothermal synthesis crystal structure topology metal organic framework

Control the size and morphology of a proton-conducting metal organic framework {[（Me2NH2）3（SO4）]2[Zn2（ox）3]}n

在线全文

学校读者我要写书评

暂无评论

Control the size and morphology of a proton-conducting metal...

Mononuclear nickel porphyrin-based two-dimensional metal organic framework

中国化学会第九届全国无机化学学术会议

作者： Xiaofeng Zheng Junjie Wang wenqiang Li School of Chemistry and Chemical Engineering Qufu Normal University

The shape-controlled growth of an excellent proton conductor metal organic material{[（Me2NH2）3（SO4）]2-[Zn2（ox）3]}n were *** effects of molar ratios and concentrations of reactants,reactive temperature and time on the morphology of{[（Me2NH2）3（SO4）]2[Zn2（ox）3]}n were *** product was characterized by IR,XRD and SEM *** a result,the optimal conditions was obtained as follows:the molar ratio of Fe（SO4）·7H2O to oxalic acid 1:2.5 in an amount of 15ml DMF,reaction temperature 165℃and reaction time 24 h,in which the minimum grain size and best morphology can be *** results lay the foundation for the preparation of the proton conductor film materials.

关键词： metal organic framework proton conduction SEM XRD

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Mononuclear nickel porphyrin-based two-dimensional metal org...