检索结果-南通市图书馆

solvent-free nanocasting toward universal synthesis of ordered mesoporous transition metal sulfide@N-doped carbon composites for electrochemical applications

引用

Nano Research 2019年第9期12卷 2250-2258页

作者： Jiahui Zhu Zhi Chen Lin Jia Yuqi Lu Xiangru Wei Xiaoning Wang Winston Duo Wu Na Han Yanguang Li Zhangxiong Wu Suzhou Key Laboratory of Green Chemical Engineering School of Chemical and Environmental EngineeringCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Institute of Functional Nano and Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China

Transition metal sulfides (TMSs) have a wide range of applications owing to their intriguing *** efforts have been devoted to nanostructuring TMSs to enhance their properties and performance,still there is a high need in general synthesis of TMS ***,for the first time,a simple solvent free reactive nanocasting approach that integrates solid precursor loading,in-situ sulfuration and carbonization into a single heating step is developed for the universal synthesis of ordered mesoporous TMS@N-doped carbon composites (denoted as OM-TMS@NCs) with methionine (Met) and metal chlorides as the precursors and the mesoporous silica (SBA-15) as the hard template.A series of OM-TMS@NCs with a hexagonal mesostructure,ultra-high surface areas (430-754 m2·g-1),large pore volumes (0.85-1.32 cm3·g-1),and unique TMS stoichiometries,including MoS2,Fe7S8,Co9S8,NiS,Cu7S4 and ZnS,are *** distinct structure configurations,namely,highly dispersed ultrathin TMS nanosheets within NCs and TMS@NC co-nanowire arrays,can be obtained depending on different *** structure evolution of the OM-TMS@NCs over the solvent-free nanocasting process is studied in detail for a deep understanding of the *** demonstrations,these materials are promising for electrocatalytic hydrogen evolution reaction and lithium ion storage with high performances.

关键词： transition metal sulfides mesoporous materials solvent-free nanocasting in-situ sulfuration carbon-based composites electrochemical applicati ons

来源：

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

solvent-free partial oxidation of cyclohexane to KA oil over hydrotalcitederived Cu-MgAlO mixed metal oxides

引用

Chinese Journal of Chemical Engineering 2022年第2期35卷 269-276页

作者： Jian Jian Dexing Yang Peng Liu Kuiyi You Weijie Sun Hu Zhou Zhengqiu Yuan Qiuhong Ai Hean Luo School of Chemistry and Chemical Engineering Hunan Engineering Research Center for Functional Membrane MaterialsHunan University of Science and TechnologyXiangtan 411201China School of Chemical Engineering National&Local United Engineering Research Center for Chemical Process Simulation and IntensificationXiangtan UniversityXiangtan 411105China

A highly efficient and stable hydrotalcite-derived Cu-MgAlO catalyst was developed for the partial oxidation of cyclohexane with molecular *** physical–chemical properties of Cu-MgAlO catalysts were studied,and the results indicated that the copper component had been successfully introduced into the hydrotalcite unit layer *** catalytic reaction results showed that copper as the active species could activate CAH bond and effectively promote the decomposition of cyclohexyl hydroperoxide(CHHP)to the mixture of cyclohexanol and cyclohexanone(KA oil).8.3%of cyclohexane conversion and 82.9%of selectivity for KA oil were obtained over 9%Cu-MgAlO catalyst at 150℃with 0.6 MPa of oxygen pressure for 2 ***,its catalytic performance was still stable after five runs.

关键词： Hydrotalcite-derived Cu-MgAlO Cyclohexane Cyclohexanol and cyclohexanone mixture(KA oil) Partial oxidation solvent-free

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

solvent-free synthesis of zeolite catalysts

引用

Science China Chemistry 2015年第1期58卷 6-13页

作者： Xiangju Meng Qinming Wu Fang Chen Feng-Shou Xiao Key Lab of Applied Chemistry of Zhejiang Province Department of Chemistry Zhejiang University

The most used method for preparation of zeolites is hydrothermal synthesis from silicate or aluminosilicate gels at temperatures in the range of 60-200 ℃. Excess water used in the industrial process results in several issues, including high autogeneous pressure, low efficiency, pollution, etc. To solve these problems, several strategies have been developed. This review describes the solvent-free synthesis of zeolites. The combination of solvent-free synthesis and organotemplate-free synthesis can open the pathway to a highly sustainable zeolite synthesis protocol in industry.

关键词： zeolites solvent-free sustainable

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

solvent-free selective hydrogenation of o-chloronitrobenzene to o-chloroaniline over alumina supported Pt nanoparticles

引用

Progress in Natural Science:Materials International 2015年第3期25卷 179-184页

作者： Qiang Bai Dan Li Lu He Hailian Xiao Ning Sui Manhong Liu College of Materials Science and Engineering Qingdao University of Science and Technology

A supported Pt/Al2O3 catalyst was prepared by immobilizing preformed colloidal Pt nanoparticles on Al2O3. The particle size and size distribution of Pt particles on Al2O3 remained the same as the colloidal nanoparticles. Selective hydrogenation of o-chloronitrobenzene to ochloroaniline was performed on the as-prepared Pt/Al2O3 nanocatalyst without using any solvent and 88.5% selectivity to o-chloroaniline at98.2% conversion of o-chloronitrobenzene was achieved. Further catalytic experiments with metal cation modification showed that some metal cations could improve the activity in various degrees while maintaining the high selectivity. Especially, 99.8% selectivity to o-chloroaniline at 100% conversion was attained with Sn4+.

关键词： Chloroaniline Selective hydrogenation solvent-free Nanoparticle Metal cation modification

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

solvent-free synthesis of some new 2-(3,5-dimethoxy-4-methylphenyl)-5-aryl-1,3,4-oxadiazoles

引用

Chinese Chemical Letters 2008年第4期19卷 423-427页

作者： Aamer Saeed Amara Mumtaz Department of Chemistry Quaid-I-Azam UniversityIslamabad 45320Pakistan

An expeditious microwave-accelerated one-step synthesis of some new 2-（3,5-dimethoxy-4-methylphenyl）-5-aryl-1,3,4- oxadiazoles by reaction of 3,5-dimethoxy-4-methyl hydrazide with different carboxylic acids in prese... 详细信息

关键词： 1,3,4-Oxadiazoles 3,5-Dimethoxy-4-methylhydrazide solvent-free

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

solvent-free preparation of arylaminotetrazole derivatives using aluminum(Ⅲ) hydrogensulfate as an effective catalyst

引用

Chinese Chemical Letters 2010年第8期21卷 892-896页

作者： Ferydoon Khamooshi Ali Reza Modarresi-Alam Deparment of Chemistry Faculty of ScienceUniversity of Sistan and Baluchestan

An efficient and simple method for the preparation of 5-arylamino-1H-tetrazole and 1-aryl-5-amino-1H-tetrazole derivatives is reported using aluminum（Ⅲ） hydrogensulfate（Al（HSO4）3） as an effective heterogeneous catalyst from secondary arylcyanamides. Generally,when the substitution in arylcyanamide is strongly electron-withdrawing the position of equilibrium would shift toward the isomer of 1-aryl-5-amino-1H-tetrazole（B） and as the electron-donating of substituent increased,the position of equilibrium is shifted toward the isomer of 5-arylamino-1H-tetrazole（A）.The present methodology offers several advantages,such as excellent yields,short reaction times,easy work-up and greener conditions.

关键词： 5-Arylamino-1H-tetrazole 1-Aryl-5-amino-1H-tetrazole Secondary arylcyanamide Aluminum(Ⅲ) hydrogensulfate(Al(HSO_4)_3) Heterogeneous catalyst solvent-free Solid acid

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

solvent-free Michael addition reaction of fluorene with chalcon

引用

Chinese Chemical Letters 2011年第1期22卷 29-32页

作者： Fu Feng School of Chemistry and Environmental Engineering Hubei Institute for Nationalities Enshi 445000 China

A series of novel Michael addition products of fluorene to chalcone were obtained in the presence of sodium hydroxide under solvent-free condition. The advantages of this procedure were mild reaction conditions, simple protocol, and high yields. The structures of the products were characterized by IR, 1H NMR, MS and X-ray diffraction. The crystal of the new compound 3 h is Triclinic, space group P-1 with a = 0.97352（6） nm, b = 1.08918（7） nm, c = 2.58418（16） nm, α = 80.1400（10）°, β = 79.5490（10）°, γ = 64.2440（10）°, V = 2.4137（3） nm3, Z = 4, Dc=1.220 g/cm3,μ = 0.286 mm-1, F（000） = 920, R = 0.0656 and wR = 0.1554 for 5664 observed reflection with I 〉 2σ（I）.

关键词： Fluorene Chalcone Michael addition solvent-free

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

solvent-free and catalyst-free method for the synthesis of 2,4,5-triarylimidazoles under microwave irradiation

引用

Chinese Chemical Letters 2009年第10期20卷 1198-1200页

作者： Jian Feng Zhou Gui Xia Gong Hui Qin Zhu Feng Xia Zhu a Department of Chemistry Huaiyin Teachers CollegeJiangsu Key Laboratory for Chemistry of Low-Dimensional Materials Huaian 223300 China School of Chemistry and Chemical Engineering Key Laboratory of Organic Synthesis of Jiangsu Province Suzhou University Suzhou 215123 China

A facile procedure for the synthesis of 2,4,5-lriarylimidazoles is being reported starting from benzil, aromatic aldehyde and ammonium acetate. The reactions were carried out with catalyst-free, solvent-free and under microwave irradiation conditions in high yield （80-99%） with short time （3-5 min） and environmental benign, as well as convenient operation. The structures of the compounds have been confirmed on the basis of their IR, 1H NMR, and/or 13C NMR, MS, and elemental analyzer.

关键词： Triarylimidazole Benzil Catalyst-free solvent-free Microwave irradiation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

solvent-free Synthesis of Dihydrofuran-fused [60]Fullerene Derivatives by High-speed Vibration Milling

引用

Chinese Chemical Letters 2005年第10期16卷 1327-1329页

作者： Xin CHENG Guan Wu WANG Yasujiro MURATA Koichi KOMATSU Department of Chemistry University of Science and Technology of China Hefei 230026 Institute for Chemical Research Kyoto University Uji Kyoto 611-0011 Japan

solvent-free reactions of 1, 3-cyclohexanedione, 5, 5-dimethyl-1, 3-cyclohexanedione, 2, 4-pentanedione and ethyl acetoacetate with C60 in the presence of Mn（OAc）3·2H2O and ceric ammonium nitrate （CAN） under the high-speed vibration milling conditions afforded dihydrofuran-fused C60 derivatives. CAN is the better oxidant than Mn（OAc）3·2H2O in these mechanochemical reactions.

关键词： Fullerene mechanochemical solvent-free 13-dicarbonyl compounds.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

solvent-free Knoevenagel Condensations over TiO2

引用

Chinese Journal of Chemistry 2007年第10期25卷 1563-1567页

作者： HOSSEINI-SARVARI, Mona SHARGHI, Hashem ETEMAD, Samane Department of Chemistry Faculty of Science Shiraz University Shiraz 71454 Iran

A study involving the scope of substrates in the Knoevenagel reaction under SFC has been conducted. Reactivity trends favored formation of the condensation product using both electron deficient and rich aryl aldehydes. A recycling study confirmed that the reaction medium could be used multiple times affording, with each run, the desired condensation product in excess of 95% conversion.

关键词： titanium dioxide aldehyde malononitrile Knoevenagel condensation solvent-free

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：