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Green Synthesis and Catalysis 2022年第3期3卷 298-301页

作者： Yufeng Liu Linzhou Wang Yingjun Li baode ma Gen-Qiang Chen Xumu Zhang Medi-X Pingshan Guangdong Provincial Key Laboratory of Catalysisand Department of ChemistrySouthern University of Science and TechnologyShenzhen 518000China Shenzhen Bay Laboratory Shenzhen 518132China Academy for Advanced Interdisciplinary Studies and Southern University of Science and Technology Shenzhen 518000China

A highly efficient and enantioselective method for the asymmetric reductive amination ofβ-keto phosphine de-rivatives was disclosed,and the correspondingβ-amino phosphine oxides could be obtained in high yields(up to 97%yield)and excellent enantioselectivities(up to 97%ee).Moreover,the reaction worked well on a gram scale,indicating that our protocol has potential applications in the synthesis of chiral ligands and organocatalysts.

关键词： Asymmetric reductive amination Chiralβ-amino phosphine Ruthenium-catalysed Ammonium salt

Modular Synthesis of Ir（Phox）-Cored Dendritic Catalysts and Their Application in Asymmetric Hydrogenation of 2, 4-Diaryl-1, 5- Benzodiazepines: A Strong Positive Dendritic Effect on Catalytic Activity

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Modular Synthesis of Ir（Phox）-Cored Dendritic Catalysts an...

Examination of Milstein Ru-PNN and Rh-Tribi/Tetrabi dual metal catalyst for isomerization-linear-hydroformylation of C4 raffinate and internal olefins

第十七届全国金属有机化学学术讨论会

作者： baode ma Qing-Hua Fan CAS Key Laboratory of Molecular Recognition and Function Institute of ChemistryChinese Academy of Sciences （CAS）

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Green Synthesis and Catalysis 2022年第1期3卷 40-45页

作者： Runtong Zhang Xin Yan Shao-Tao Bai Caiyou Chen Bozhao Nan baode ma Jialin Wen Xumu Zhang Academy for Advanced Interdisciplinary Studies Guangdong Provincial Key Laboratory of CatalysisDepartment of ChemistrySouthern University of Science and TechnologyShenzhen 518055China Division of Chemistry and Chemical Engineering California Institute of TechnologyPasadenaCA 91125United States School of Innovation and Entrepreneurship Southern University of Science and TechnologyShenzhen 518055China

Isomerization-linear-hydroformylation is demanding,however,not an addressed issue,for the production of value-added linear aldehydes by converting cheap and abundant internal alkenes available from bio-&petrochemical *** this paper,a dual metal catalysis system combining a Ru-isomerization catalyst and a Rh-linear-hydroformylation catalyst satisfying the“4S”criterions was reported for isomerization-linear-hydroformylation of C4 raffinate(mixed butenes)and internal *** optimized dual metal catalyst system hydroformylated Raffinate II feed to valuable valeraldehyde in 98%linear selectivity(n:i=49),80%conversion and high activity of 1069 h^(−1)TOF whereas 96%linear selectivity(n:i=24),71%conversion and 948 h^(−1)TOF were observed using only the Rh-hydroformylation ***,valeraldehyde are produced in million tons scale annually for making non-toxic plasticizer *** 2-olefins were also converted to linear aldehydes in>98%linear selectivity(n:i>49),78%-82%conversion and high activity of 802-851 h^(−1)TOF.

关键词： Isomerization-linear-hydroformylation Ru-PNN Dual metal catalysis Raffinate Internal alkenes

Design and Synthesis of Janus-type Chiral Dendritic Diphosphines and Their Applications in Asymmetric Hydrogenation

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Design and Synthesis of Janus-type Chiral Dendritic Diphosph...

树状分子BINAP膦配体的合成及其在不对称氢化中的应用:结构与性能关系探究

第十七届全国金属有机化学学术讨论会

作者： Ji Liu Yu Feng baode ma Yan-Mei He Qing-Hua Fan CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences （CAS）

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化学学报 2013年第4期71卷 528-534页

作者：马保德邓国军刘继何艳梅范青华中国科学院化学研究所中国科学院分子识别与功能重点实验室北京分子科学国家实验室北京100190 湘潭大学化学学院环境友好化学与应用教育部重点实验室湘潭411105

设计并合成了系列具有不同代数以及不同结构的手性树状分子BINAP配体.以Ru-催化的2-芳基丙烯酸的不对称氢化和Rh-催化的乙酰氨基肉桂酸的不对称氢化为模型反应,结合圆二色谱分析方法,系统研究了树状分子催化剂的结构与催化性能的关系.... 详细信息

设计并合成了系列具有不同代数以及不同结构的手性树状分子BINAP配体.以Ru-催化的2-芳基丙烯酸的不对称氢化和Rh-催化的乙酰氨基肉桂酸的不对称氢化为模型反应,结合圆二色谱分析方法,系统研究了树状分子催化剂的结构与催化性能的关系.在2-芳基丙烯酸的不对称氢化中,发现双边取代的树状分子催化剂表现出明显高于小分子催化剂的催化活性,反应速度随着树状分子代数的增加而加快,当反应溶剂由甲苯/甲醇(1∶1,V/V)变为纯甲苯时,这种树状分子加速效应更加明显;而单边取代的树状分子催化剂,由于催化活性中心远离树状分子载体,因此其催化活性与小分子催化剂几乎相同.此外,圆二色(CD)谱研究表明,双边取代的树状分子配体有不同于单边取代树状分子配体和小分子BINAP配体的Cotton效应,说明树状分子的引入可能影响到位于其核心的手性配体的微环境.这些结果显示树状分子载体在催化活性中心周围所构筑的微环境在促进催化剂活性中发挥了关键作用.这种"微环境效应"还在脱氢氨基酸的不对称氢化中得到了进一步证明.最后,通过溶剂沉淀法,实现了树状分子催化剂与产物的方便分离,催化剂至少可以回收使用三次,其催化活性和对映选择性没有任何降低.

关键词：树状催化剂手性膦配体不对称氢化树状分子效应负载

Deposition of Ti(C, N)-TiB_2 Composite Coating by Reactive LPPS

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稀有金属材料与工程 2009年第A03期38卷 129-133页

作者： mao Zhengping ma Jing Wang Jun Sun baode State Key Laboratory of Metal matrix Composites Shanghai Jiaotong University Shanghai 200240 China Hebei University of Science and Technology Shijiazhuang 050054 China

Ti(C, N)-TiB2 composite coatings were deposited by means of reactive low pressure plasma spraying (LPPS) based on the technology of self-propagating high-temperature synthesis (SHS). The original powders were mixtures of Ti and B4C powders. The powders were mixed by ball mill and then spray-dried and at last sintered to be suitable for spraying. Two spraying distances were selected for LPPS. Scanning electron microscopy (SEM) was used to investigate the morphologies of powders for spraying and the microstructures of the coatings. The phase compositions of coatings were measured by X-ray diffraction (XRD). Spray-dried and sintered powders are denser and better bond than only spray-dried powders. The composite coating is composed of TiB2, TiC0.3N0.7, TiN0.3, Ti4N3-x and impurity phase of Ti5Si3 with 300 mm spraying distance. Partly unreacted B4C powders remained in the coating for 240 mm spraying distance, which may be inadequate reaction. No titanium oxide was detected in the composite coating for the relative high vacuum degree of LPPS. The anti-corrosion property of LPPS sprayed Ti(C, N)-TiB2 composite coating with 300 mm spraying distance in electrolytic solution is superior to that of 240 mm spraying distance. Microhardness of Ti(C, N)-TiB2 composite coating is relatively low due to the unconsolidated structure of the coating. The solving methods to improve property of composite coating are finally put forward in the paper.

关键词：复合涂层复合材料物理性能烧结密度

In situ study on the oscillation of mobile droplets and force analysis during the directional solidification of Al-Bi alloy

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Journal of materials Science & Technology 2024年第10期177卷 1-9页

作者： Ya Zhang Yue Wu Yang Tang Jianbo ma Bo mao Yanling Xue Hui Xing Jiao Zhang baode Sun Shanghai Key Lab of Advanced High-temperature materials and Precision Forming and State Key Lab of Metal matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteCASShanghai 201204China Collaborative Innovation Center for Advanced Ship and Deep-sea Exploration Shanghai Jiao Tong UniversityShanghai 200240China

During solidifications of immiscible alloys,the motion of droplets at the solid/liquid(S/L)interface is gen-erally driven by dragging force,gravity force,repulsion force of interface,and thermal-solutal marangoni force,However,there is few in situ study investigating kinetics behavior to analyze the forces on *** mechanism of droplet motion remains unclear due to the unavailability or uncertainty of the effect of convection and solutal marangoni force on droplet *** this study,directional solidification of im-miscible Al-Bi alloy was observed via synchrotron radiography,and the horizontal oscillation of droplets at S/L interface was detected for the first ***,especially solutal marangoni force,were calcu-lated based on the in situ measured radius of droplets and thermal-solutal *** experimental results cannot be reasonably explained by the previous analysis model which neglects melt *** non-negligible effect of flow on droplet motion was demonstrated,and the force balance of droplet both vertically and horizontally can be obtained considering a lift force of 6.39 × 10^(-9) N and a modified solute-related parameter dσ/dc of 0.45-0.65 J m^(-2),respectively.

关键词： Radiography Solidification Immiscible alloys Droplet behavior Solid/liquid interface

Knowledge Graph for Identifying Geological Disasters by Integrating Computer Vision with Ontology

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Journal of Earth Science 2023年第5期34卷 1418-1432页

作者： Qinjun Qiu Zhong Xie Die Zhang Kai ma Liufeng Tao Yongjian Tan Zhipeng Zhang baode Jiang School of Computer Science China University of GeosciencesWuhan 430078China Key Laboratory of Geological Survey and Evaluation of Ministry of Education China University of GeosciencesWuhan 430074China National Engineering Research Center of Geographic Information System Wuhan 430074China School of Resource and Environmental Sciences Wuhan UniversityWuhan 430074China College of Computer and Information Technology China Three Gorges UniversityYichang 443002China Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering China Three Gorges UniversityYichang 443002China

The occurrence of geological disasters can have a large impact on urban safety. Protecting people’s safety is the most important concern when disasters occur. Safety improvement requires a large amount of comprehensive and representative risk analysis and a large collection of information related to geological hazards, including unstructured knowledge and experience. To address the relevant information and support safety risk analysis, a geological hazard knowledge graph is developed automatically based on computer vision and domain-geoscience ontology to identify geological hazards from input images while obeying safety rules and regulations, even when affected by changes. In the implementation of the knowledge graph, we design an ontology schema of geological disasters based on a top-down approach, and by organizing knowledge as a logical semantic expression, it can be shared using ontology technologies and therefore enable semantic interoperability. Computer vision approaches are then used to automatically detect a set of entities and attributes, using the data from input images, and object types and their attributes are identified so that they can be stored in Neo4j for reasoning and searching. Finally, a reasoning model for geological hazard identification was developed using the Neo4j database to create nodes, relationships, and their properties for modeling, and geological hazards in the images can be automatically identified by searching the Neo4j database. An application on geological hazard is presented. The results show the effectiveness of the proposed approach in terms of identifying possible potential hazards in geological hazards and assisting in formulating targeted preventive measures.

关键词： geological hazard computer vision knowledge graph city safety ontology

Metallogenic characteristics of the region of Northwest Hebei and analysis of ore prospecting potential in its peripheries

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Chinese Journal Of Geochemistry 2011年第1期30卷 1-13页

作者： SUN Aiqun NIU Shuyin WANG baode HAN Yuchou WEI Minhui ma Baojun ZHAO Zhiyuan XIA Dong College of Resources Shijiazhuang Univerity of Economics Shijiazhuang 050031 China Department of Land and Natural Resources of Hebei Province Shijiazhuang 050081 China

The region of Northwest Hebei is an area where Au-Ag polymetallic ore depsits are concentrated in Hebei Province. There were divided the Au ore-concentrated region with the magmatic-metamorphic diamictite zone as the center and the perpheral cover-strata zone and Ag-polymetallic metallogenic zone along the line of Xuanhua-Songli-Chicheng. Research on mantle branch structure indicates that Au-Ag polymetallic ore-forming materials come mainly from the deep interior of the Earth. The ore-forming materials tend to migrate upwards through the multi-stage evolution of mantle plume, and are concentrated as ores in the favourable tectonic expansion zone of a mantle branch structure. As viewed in plane, from the center to the periphery and as viewed in space, from the lower part to the upper part there exists Au-Ag-Pb-Zn zonation, as evidenced by drilling data from a number of mines. So, there is still great potential for ore prospecting in the region of Northwest Hebei.

关键词：成矿地质特征冀西北地区找矿潜力银多金属矿多金属成矿带地球深部成矿物质多级演化

Study on the ore-forming and ore-controlling structure of the Mujicun Cu (Mo) ore deposit, Hebei Province, China

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Chinese Journal Of Geochemistry 2012年第1期31卷 1-14页

作者： NIU Shuyin ma Guoxi CHEN Zhikuan WANG baode CHEN Lijing SUN Aiqun ma Xiaofeng ZHANG Jianzhen ma Baojun CHEN Chao LU Hongpeng Shijiazhuang University of Economics Shijiazhuang 050031China Baoding Geo-Engineering Investigation Institute of Hebei Province Baoding 071051China College of Earth Science and Natural Resources China University of Geosciences(Beijing)BeOing 100029China

The Mujicun Cu (Mo) ore deposit at Laiyuan, Hebei Province, is a currently proven large-sized Cu (Mo) polymetallic ore deposit and it is located in the second-ordered fault depression basin of the ditachment belt on the hanging-wall on the western side at the juncture of the Laiyuan dumbell-shaped complex in the northern part of the Fuping mantle-branch structure. Metallogenesis is controlled by diorite porphyrite in intrusive relation with the fault depression basin and other relevant fault structure systems and intenstive wall-rock alteration zones. This study, in conjunction with the most recent exploration data, analyzed the geological background of metallogenesis of this deposit, summaried the geological characteristics of typical ore deposits, determined the alteration zonation of the deposit, investigated regional metallogenesis and the genesis of typical ore deposits, discussed the regional ore-forming and ore-controlling structures, and generalized the regional ore-controlling model and metallogenic model of the deposit. It is considered that the Mujicun porphry Cu (Mo) deposit, the Tieling, Futuyu, Xiaoligou and other skarn-type Fe-Cu deposits and the He'ergou hydrothermal-type Pb-Zn-Ag deposit jointly constitute a three-in-one polymetallic orefield, with the characteristics of typical metallogenic series.

关键词：多金属矿床控矿构造成矿控制河北省铜矿钼中国断裂构造系统