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Iron-Catalyzed Aerobic Oxidation of Aldehydes： Single Component Catalyst and Mechanistic Studies

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Chinese Journal of Chemistry 2018年第1期36卷 15-19页

作者： Xingguo Jiang Yizhan Zhai Junyu Chen Yulin Han Zheng Yang Shengming Ma State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China University of Chinese Academy of Sciences Beijing 100049 China Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 China

向在在空中把纯氧或氧的 1 atm 用作氧化剂和单个部件催化剂的催化数量的 MeCN 的羧基的酸的醛的氧气的氧化， Fe (没有 3)3

关键词：催化剂氧化剂机械学部件氧气醛房间温度控制实验

Protonation induced high-T_c phases in iron-based superconductors evidenced by NMR and magnetization measurements

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Science Bulletin 2018年第1期63卷 11-16页

作者： Yi Cui Gehui Zhang Haobo Li Hai Lin Xiyu Zhu Hai-Hu Wen Guoqing Wang Jinzhao Sun Mingwei Ma Yuan Li Dongliang Gong Tao Xie Yanhong Gu Shiliang Lie Huiqian Luo Pu Yu Weiqiang Yu Department of Physics Renmin University of China Beijing 100872 China State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics Tsinghua University Beijing 100084 China Center for Superconducting Physics and Materials National Laboratory of Solid State Microstructures and Department of Physics Collaborative Innovation Center for Advanced Microstructures Nanjing University Nanjing 210093 China International Center for Quantum Materials School of Physics Peking University Beijing 100871 China Collaborative Innovation Center of Quantum Matter Beijing 100871 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sdences Beijing 100049 China

Chemical substitution during growth is a well-established method to manipulate electronic states of quantum materials, and leads to rich spectra of phase diagrams in cuprate and iron-based superconductors. Here we report a novel and generic strategy to achieve nonvolatile electron doping in series of(i.e.11 and 122 structures) Fe-based superconductors by ionic liquid gating induced protonation at room temperature. Accumulation of protons in bulk compounds induces superconductivity in the parent compounds, and enhances the Tclargely in some superconducting ones. Furthermore, the existence of proton in the lattice enables the first proton nuclear magnetic resonance(NMR) study to probe directly superconductivity. Using Fe S as a model system, our NMR study reveals an emergent high-Tcphase with no coherence peak which is hard to measure by NMR with other isotopes. This novel electric-fieldinduced proton evolution opens up an avenue for manipulation of competing electronic states(e.g.Mott insulators), and may provide an innovative way for a broad perspective of NMR measurements with greatly enhanced detecting resolution.

关键词： NMR 超导体磁化电子状态铁房间温度模型系统创新方法

Insight into the structural features of organic species in Fushun oil shale via thermal dissolution

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Chinese Journal of Chemical Engineering 2018年第10期26卷 2162-2168页

作者： Shengkang Wang Xianyong Wei Zhimin Zong Key Laboratory of Coal Processing and Efficient Utilization Ministry of Education China University of Mining & Technology State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering Ningxia University

Fushun oil shale(FOS) was subjected to thermal dissolution(TD) under different conditions. The results show that the optimal solvent, temperature, time, and ratio of solvent to FOS are ethanol, 300 °C, 2 h, and 5 ml·g^(-1),respectively and the corresponding yield of the soluble portion(SP) is 32.2%(daf), which is much higher than the oil content of FOS(ca. 6%), suggesting that TD in ethanol is an excellent way to extract organics from FOS.According to 3 direct analyses, aliphatic moieties in FOS are the most abundant followed by C\\O-containing moieties and each cluster in FOS has 3 conjugated aromatic rings on average with fewer substituents. According to the analysis with a gas chromatograph/mass spectrometer, alkanes are predominant in all the SPs. A number of alkenes were identified in the SPs from the TD, while none of the alkenes were detected in acetone-SP obtained at room temperature, implying that the TD can destroy the π-π and intertwining interactions between alkenes and macromolecular structures in FOS. Moreover, a small amount of alkyl-substituted phenols and alkoxysubstituted phenols were detected in ethanol-SP from the TD, which could be the products from ethanolyzing the macromolecular moiety of FOS.

关键词：热溶解油页岩结构特征种类器官房间温度 FOS

Intensive photocatalytic activity enhancement of Bi5O7I via coupling with band structure and content adjustable BiOBrxI1-x

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Science Bulletin 2018年第4期63卷 219-227页

作者： Xin Li Tiedan Chen Haili Lin Jing Cao Hongwei Huang Shifu Chen College of Chemistry and Materials Science/Information College Huaibei Normal UniversityHuaibei 235000China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China Anhui Key Laboratory of Energetic Materials Huaibei 235000China School of Materials Science and Technology China University of GeosciencesBeijing 100083China

Band structure and component content are the key factors for determining the activity of semiconductor heterojunction. In this study, a novel Bi_5O_7I/BiOBr_xI_(1-x)heterostructure was synthesized by a simple hydrobromic(HBr) acid etching method through transforming partial of Bi_5O_7I to Iàion doped Bi OBr(BiOBr_xI_(1-x)) at room temperature without adding extra dopant. Both the band structure and component content of Bi_5O_7I/BiOBr_xI_(1-x)alter with the additive HBr acid. The Bi_5O_7I/BiOBr_xI_(1-x)(S3.0) sample exhibits the best photocatalytic activity, 6 times higher than that of pure Bi_5O_7I, for the degradation of methyl orange under visible-light(λ > 420 nm). The activity enhancement of Bi_5O_7I/BiOBr_xI_(1-x)is primarily ascribed to the improved separation efficiency of photocharges, originated from the adjustable band structure and component content. The significant findings of this paper provide a facile way to construct highly efficient semiconductor heterojunction via playing the synergetic effect of adjustable band structure and component content for purifying organic pollutants in wastewater.

关键词：可调节结构房间温度分离效率污染物质废水净化调查结果半导体

Controllable preparation of ZnO porous flower through a membrane dispersion reactor and their photocatalytic properties

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Chinese Journal of Chemical Engineering 2018年第10期26卷 2192-2198页

作者： Feng Zhang Zhilong Xu Kun Wang Rizhi Chen Zhaoxiang Zhong Weihong Xing State Key Laboratory of Materials-Oriented Chemical Engineering National Engineering Research Center for Special Separation Membrane Nanjing Tech University Changzhou Lvxin Advanced Material Technology Co. Ltd.

Three dimensional (3D) flower-like basic zinc carbonate constructed by multilayered nanoplates were rapidly prepared at room temperature through the direct precipitation method coupled with membrane dispersion technology, and porous ZnO with similar structures could be obtained after calcining the precursor. The structural properties of the products before and after the calcining process were characterized by SEM, TEM and XRD.The supersaturation of the reaction system due to the membrane dispersion played an important role in the formation of uniform Zn_5(CO_3)_2(OH)_6 precursors. A plausible mechanism was proposed for the formation of the flower-like ZnO assembled by nanoplates composed of nanoparticles. The obtained ZnO microspheres showed excellent photocatalytic properties, which could be attributed to the open structure and remarkable amount of porous nanoplates.

关键词： ZnO 膜分散性质多孔反应堆控制分散技术房间温度

The melilite-type compound (Sr_(1-x),A_x)_2MnGe_2S_6O(A=K,La) being a room temperature ferromagnetic semiconductor

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Science Bulletin 2018年第14期63卷 887-891页

作者： Huan-Cheng Yang Ben-Chao Gong Kai Liu Zhong-Yi Lu Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices Renmin University of China Beijing 100872 China

The seeking of room temperature ferromagnetic semiconductors, which take advantages of both the charge and spin degrees of freedom of electrons to realize a variety of functionalities in devices integrated with electronic, optical, and magnetic storage properties, has been a long-term goal of scientists and engineers. Here, by using the spin-polarized density functional theory calculations, we predict a new series of high temperature ferromagnetic semiconductors based on the melilite-type oxysulfide Sr_2MnGe_2S_6O through hole(K) and electron(La) doping. Due to the lack of strong antiferromagnetic superexchange between Mn ions, the weak antiferromagnetic order in the parent compound Sr_2MnGe_2S_6O can be suppressed easily by charge doping with either p-type or n-type carriers, giving rise to the expected ferromagnetic order. At a doping concentration of 25%, both the hole-doped and electron-doped compounds can achieve a Curie temperature(T_c) above 300 K. The underlying mechanism is analyzed.Our study provides an effective approach for exploring new types of high temperature ferromagnetic semiconductors.

关键词：房间温度铁磁性半导体混合物类型 La 居里温度高温度

Room Temperature Ferromagnetism in Ga1-xHoxN （x=0.0 and 0.05） Diluted Magnetic Semiconductor Thin Films

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Chinese Journal of Chemical Physics 2012年第3期25卷 313-317,373,374页

作者： Ghulam Murtaza Rai Muhammad Azhar Iqbal Yong-bing Xu lain Gordon Will Qasim Mahmood Department of Physics University of the Punjab Lahore 54590 Pakistan Spintronics Laboratory Department of Electronics The University of York York Y010 5DD UK

做的钬轧了冲淡的磁性的半导体薄电影被退火的热蒸发技术和随后的氨准备了。X 光检查衍射大小表明所有山峰属于完全六角形的 wurtzite 结构。表面形态学和作文分析被扫描电子显微镜学和精力执行散光谱学分别地。房间温度 Ga1xHoxN 的铁... 详细信息

做的钬轧了冲淡的磁性的半导体薄电影被退火的热蒸发技术和随后的氨准备了。X 光检查衍射大小表明所有山峰属于完全六角形的 wurtzite 结构。表面形态学和作文分析被扫描电子显微镜学和精力执行散光谱学分别地。房间温度 Ga1xHoxN 的铁磁性的性质(x=0.0， 0.05 ) 电影用颤动被分析在房间温度的样品磁强计。磁性的大小证明 undoped 拍摄(即轧) 展出抗磁的行为，当惊讶做(Ga0.95Ho0.05N ) 电影展出了铁磁性的行为时。

关键词：半导体薄膜铁磁性房间温度振动样品磁强计 X射线衍射纤锌矿结构钬掺杂成分分析

Cu2O-Mediated Room Temperature Cyanation of Aryl Boronic Acids/Esters and TMSCN

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Chinese Journal of Chemistry 2013年第1期31卷 27-30页

作者： Yong Ye Yanhua Wang Pengtang Liu Fushe Han Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian Liaoning 116024 China Changchun University of Science and Technology Changchun Jilin 130022 China

为经由芳基 boronic 酸或酉旨和 TMSCN 的 Cu2O-catalyed 跨 coupling 的芳基 nitriles 的有效、可靠的合成的一个方法被介绍。大量底层装饰了由充满电子、缺乏，位地，很拥挤、易变的功能被容忍。而且，反应能在房间温度在温和条件下... 详细信息

为经由芳基 boronic 酸或酉旨和 TMSCN 的 Cu2O-catalyed 跨 coupling 的芳基 nitriles 的有效、可靠的合成的一个方法被介绍。大量底层装饰了由充满电子、缺乏，位地，很拥挤、易变的功能被容忍。而且，反应能在房间温度在温和条件下面继续。作为催化剂与便宜、容易地可得到、没有卤素的 Cu2O 的使用配对的这些优点为芳基 cyanations 使协议成为一种呼吁的选择。

关键词：芳基硼酸房间温度氧化亚铜氰化介导酯交叉偶联温和条件

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变风量空调系统房间温度控制研究

变风量空调系统房间温度控制研究

作者：李善伟青岛理工大学

学位级别：硕士

目前,中央空调在现代化建筑中得到广泛应用。传统空调大多以房间最大负荷确定送风量,能耗高,且只能对指定区域进行温度控制,局部区域容易出现过冷或过热的现象。相比而言,变风量（Variable Air Volume,VAV）空调系统在性能设备安装、灵... 详细信息

目前,中央空调在现代化建筑中得到广泛应用。传统空调大多以房间最大负荷确定送风量,能耗高,且只能对指定区域进行温度控制,局部区域容易出现过冷或过热的现象。相比而言,变风量（Variable Air Volume,VAV）空调系统在性能设备安装、灵活性等方面具备很大优势,使其在中央空调系统中脱颖而出,占据了很大市场份额。但变风量空调系统较为复杂加之本身大滞后、时变性、不确定性等特点,使得变风量空调的房间温度控制很难达到理想的效果,在某种程度上对变风量空调的应用与普及起到了阻碍作用。因此,研究合适的变风量空调系统温度控制方式,对优化空调系统性能和稳定运行具有重要意义。在对变风量空调系统动静态特性及控制难点进行分析的基础上,设计变论域模糊算法引入到空调房间温度串级PID控制中。变论域模糊控制（Variable Universe Fuzzy Control）是一种不依赖被控对象的精确模型的智能控制算法,用语言式的模糊变量代替数值来描述系统,能够有效克服对被控对象精确模型的依赖性,从而简化系统设计的复杂性,具备响应速度快、结构简单、鲁棒性好等优势。在引入一组非线性伸缩因子后,模糊论域能够随误差变化而发生改变。模糊控制器作为上层监督机构对控制情况进行监督,实时调整PID参数,提高了控制系统的自适应能力和控制精度。本研究通过分析变风量空调系统房间温度控制的内部机制及运行原理,运用Matlab和Lab VIEW软件通过系统辨识建立所涉及回路的被控对象数学模型。分析变论域模糊控制误差变化过程中,伸缩因子对论域伸缩的控制作用,设计出一种指数函数型伸缩因子,并给出稳定性分析。将变论域模糊PID控制器用于串级控制中的温度环中,实现对变风量空调系统房间温度的精准控制。最后对该控制方法进行仿真与实验。通过仿真和实验结果得出以下结论:本研究所采用的控制方案结合变论域模糊PID控制和串级控制的优点,在响应时间、控制精度、鲁棒性等方面都有一定提升,具有较好的实际应用效果,为变风空调系统的稳定运行提供了一种具有可行性的控制方法。

关键词：变风量空调系统房间温度系统辨识变论域模糊控制串级控制