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Contributions of moisture sources to precipitation in the major drainage basins in the Tibetan Plateau

Science China Earth Sciences 2022年第6期65卷 1088-1103页

作者： Ying LI Fengge SU Qiuhong TANG Hongkai GAO Denghua YAN Hui PENG Shangbin XIAO Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Yichang 443002China College of Hydraulic and Environmental Engineering China Three Gorges UniversityYichang 443002China State Key Laboratory of Tibetan Plateau Earth System Resources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of Sciences(CAS)Beijing 100101China University of Chinese Academy of Sciences Beijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China Key Laboratory of Water Cycle and Related Land Surface Process Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Key Laboratory of Geographic Information Science(Ministry of Education of China) East China Normal UniversityShanghai 200241China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin Water Resources DepartmentChina Institute of Water Resources and Hydropower ResearchBeijing 100038China

Tracking and quantifying the moisture sources of precipitation in different drainage basins in the Tibetan Plateau(TP)help to reveal basin-scale hydrological cycle characteristics under the interactions between the westerlies and Indian summer monsoon(ISM) systems and to improve our understanding on the mechanisms of water resource changes in the ‘Asian Water Tower' under climate changes. Based on a Eulerian moisture tracking model(WAM-2) and three atmospheric reanalysis products(ERA-I, MERRA-2, and JRA-55), the contributions of moisture sources to the precipitation in six major sub-basins in the TP were tracked during an approximately 35-year period(1979/1980–2015). The results showed that in the upper Indus(UI),upper Tarim River(UT), and Qaidam Basin(QB), the moisture sources mainly extended westward along the mid-latitude westerlies to the western part of the Eurasian continent. In contrast, in the Yarlung Zangbo River Basin(YB), inner TP(ITP), and the source area of three eastern rivers(TER, including the Nujiang River, Lancang River, and Yangtze River), the moisture sources extended both westward and southward, but mainly southward along the ISM. In winter and spring, all of the sub-basins were dominated by western moisture sources. In summer, the western sources migrated northward with the zonal movement of the westerlies, and simultaneously the southern sources of the YB, ITP, and TER expanded largely toward the Indian Ocean along the ISM. In autumn, the moisture sources of the UI, UT, and QB shrank to the western sources, and the moisture sources of the YB, ITP, and TER shrank to the central-southern TP and the Indian subcontinent. By quantifying the moisture contributions from multiple sources, we found that the terrestrial moisture dominated in all of the sub-basins, particularly in the UT and QB(62–73%). The oceanic contributions were relatively high in the UI(38–42%) and YB(38–41%). In winter, evaporation from the large western water bodies(such as the M

关键词： Tibetan Plateau Precipitation Moisture sources Westerlies Indian summer monsoon Local recycling

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Design of solvent mixtures for removal of phenol from wastewater using a non-linear programming model with a multi-start method

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Emerging Contaminants 2022年第1期8卷 39-45页

作者： Qingjie Wang Yanchun Shi Yuehong Zhao Pengge Ning Institute of Process Engineering Chinese Academy of ScienceBeijing100190China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesNo.18Shuangqing RoadBeijing100085China

The optimization-based design of solvent mixtures used for phenolic wastewater treatment was investigated in this work.A nonlinear programming(NLP)model was formulated based on the concepts of computer-aid molecule design(Computer-Aided Molecular Design,CAMD)to select solvent mixtures with the best extraction performance considering the constraints of extraction process and the environmental *** to the complexity of the NLP model,multi-start method was adopted to solve this problem in order to get near global optimal *** results of the calculations suggested that the optimal mixture consisted of 70.1%n-octanol and 29.9%2-octanone(molar fraction).The 119 sets of experimental results showed that the extraction ability of the optimal solvent mixture identified by CAMD technique was among the top 6 sets compared to the experiment *** results suggested that the developed NLP model could be able to screen the optimal solvent mixture in phenolic wastewater treatment.

关键词： Solvent mixtures Phenolic wastewater Computer-aided molecule design Extraction

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Silver modified Cu/SiO2 catalyst for the hydrogenation of methyl acetate to ethanol

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Chinese Journal of Chemical engineering 2020年第6期28卷 1612-1622页

作者： Zhiheng Ren Muhammad Naeem Younis Hui Zhao Chunshan Li Xiangui Yang Erqiang Wang Gongying Wang Chengdu Institute of Organic Chemistry Chinese Academy of SciencesChengdu 610041China National Engineering Laboratory for VOCs Pollution Control Material&Technology University of Chinese Academy of SciencesBeijing 101408China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex SystemsThe National Key Laboratory of Clean and Efficient Coking TechnologyBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Zhongke Langfang Institute of Process Engineering Langfang 065000China Zhongke Langfang Institute of Process Engineering Zhengzhou 450000China School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China

A series of silver modified Cu/SiO2 catalysts were synthesized with ammonia-evaporation method and applied in vapor-phase hydrogenation of methyl acetate to *** influence of additive‘Ag’on the structural evolution of catalyst was systematically studied by several characterization techniques,such as N2 adsorption–desorption,N2O titration,PXRD,FTIR,in-situ FTIR,H2-TPR,H2-TPD,XPS and *** showed that incorporation of a small amount of Ag could enhance the structural stability,and the strong interaction between Cu and Ag species was conducive to increase the dispersion of copper species and create a suitable Cu+/(Cu0+Cu+)ratio,which was proposed to be responsible for the improved catalytic *** maximum conversion of MA(94.1%)and selectivity of ethanol(91.3%)over optimized Cu-0.5 Ag/SiO2 and 120 h on stream without deactivation under optimal conditions demonstrates its excellent stability.

关键词： Copper Silver Hydrogenation Methyl acetate Ethanol Kinetic

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Cell-Wall Based Aerogel for CE (Ⅲ) Adsorption from Leaching Tailing: Property and Mechanistic Research

SSRN

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SSRN 2023年

作者： Zhao, Hui Yao, Haoyu Zhao, Feifei Yang, Liangrong Wu, Lianying Liang, Xiangfeng Liu, Huizhou Yu, Changjiang College of Chemistry and Chemical Engineering Ocean University of China Qingdao266071 China Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao266061 China Shandong Energy Institute Qingdao266061 China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

Efficient separation of rare earth elements (REEs) from leaching tailing is of great significance for environmental protection and full utilization of resources. Cell-wall is rich in various active groups which can efficiently adsorb REEs. In this work, a series of composite aerogels based on pectin and cellulose (the key active components in cell-wall) were fabricated for effectively adsorption of Ce (Ⅲ) from leaching tailing. The physical and chemical property of composite aerogels were characterized by SEM, FT-IR, XRD, contact angle measuring instrument and zeta potentiometer. The adsorption capacity was measured under different conditions. The fitting of isothermal adsorption model showed that the adsorption conforms to Langmuir model and the maximum adsorption capacity of Ce (Ⅲ) was 337.36 mg/g at pH 6. Kinetic fitting indicated that the adsorption process conforms to the second-order kinetic model. Composite aerogels have an excellent regeneration performance. Adsorption process is realized by electrostatic interaction, ion exchange with -COO- and chelation with C-NH2. The actual adsorption in leaching tailing showed that the adsorption efficiency of composite aerogels for Ce (Ⅲ) and Eu (Ⅲ) can reach 68 % and 81 % respectively, which have good practicability. © 2023, The Authors. All rights reserved.

关键词： Aerogels

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Preparation of Co-MnOx/GAC catalyst by high-gravity technology and its mechanism for synergistic catalytic ozone degradation of phenol

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Chinese Journal of Chemical engineering 2025年 81卷 208-218页

作者： Wang, Cibin Nie, Kangrui Zhao, Zhiwei Xue, Yan Zhao, Tong Miao, Fuming Liu, Youzhi Jiao, Weizhou Shanxi Province Key Laboratory of Chemical Process Intensification State Key Laboratory of Coal and CBM Co-Mining School of Chemistry and Chemical Engineering North University of China Taiyuan030051 China Shanxi Xinhua Chemical Protection Equipment Research Institute Co. Ltd. Taiyuan030008 China

The impregnation method for preparing catalysts often faces challenges such as prolonged preparation times and poor dispersion of active components due to the limited mobility of the impregnation liquid. The rotating packed bed (RPB) can break the precursor solution into fine droplets, enabling dynamic impregnation of active components onto the surface of activated carbon. This approach facilitates the uniform distribution of active components on the carrier and enhances the stability and performance of the catalyst. In this study, activated carbon catalysts were prepared using high-gravity technology. It was found that the preparation time for Co-MnOx/GAC using the RPB method was reduced by 98%, the catalytic activity increased by 6.62%, and the loadings of active components increased by 13% and 17%, the catalytic activity remained stable after five cycles, with a significantly lower rate of metal dissolution. A suite of complementary analytical techniques demonstrates that Co-MnOx/GAC(RPB) has higher homogeneity and dispersion. X-ray photoelectron spectroscopy (XPS) results indicate that Co(II) and Mn(IV)/Mn(III) are the primary active sites during the catalytic decomposition of ozone, elucidating the mechanism of synergistic catalytic ozonation by dual-active components. Finally, electron paramagnetic resonance (EPR) confirmed that hydroxyl radicals (·OH) were the predominant reactive species in the reaction. © 2025 Chemical Industry and engineering Society of China, and Chemical Industry Press Co., Ltd.

关键词： Chemical industry

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High-entropy ceramics:Present status,challenges,and a look forward

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Journal of Advanced Ceramics 2021年第3期10卷 385-441页

作者： Huimin XIANG Yan XING Fu-zhi DAI Hongjie WANG Lei SU Lei MIAO Guojun ZHANG Yiguang WANG Xiwei QI Lei YAO Hailong WANG Biao ZHAO Jianqiang LI Yanchun ZHOU Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China New Energy Technology Engineering Laboratory of Jiangsu Province Nanjing University of Posts and TelecommunicationsNanjing 210023China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Guangxi Key Laboratory of Information Materials Guangxi Collaborative Innovation Center of Structure and Property for New Energy and MaterialSchool of Material Science and EngineeringGuilin University of Electronic TechnologyGuilin 541004China Institute of Functional Material College of Material Science and EngineeringDonghua UniversityShanghai 201620China Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China College of Metallurgy and Energy North China University of Science and TechnologyTangshan 063210China College of Material Science and Engineering Shenzhen UniversityShenzhen 518060China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Aeronautical Materials and Application Technology School of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046China National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology CAS Key Laboratory of Green Process and EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China

High-entropy ceramics (HECs) are solid solutions of inorganic compounds with one or more Wyckoff sites shared by equal or near-equal atomic ratios of multi-principal *** in the infant stage,the emerging of this new family of materials has brought new opportunities for material design and property *** from metals,the diversity in crystal structure and electronic structure of ceramics provides huge space for properties tuning through band structure engineering and phonon *** from strengthening,hardening,and low thermal conductivity that have already been found in high-entropy alloys,new properties like colossal dielectric constant,super ionic conductivity,severe anisotropic thermal expansion coefficient,strong electromagnetic wave absorption,etc.,have been discovered in *** a response to the rapid development in this nascent field,this article gives a comprehensive review on the structure features,theoretical methods for stability and property prediction,processing routes,novel properties,and prospective applications of *** challenges on processing,characterization,and property predictions are also ***,future directions for new material exploration,novel processing,fundamental understanding,in-depth characterization,and database assessments are given.

关键词： high-entropy ceramics(HECs) processing structure properties applications

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Overall Structure Modeling and Modal Analysis of Liquid Rocket Engine Based on ABAQUS Secondary Development Platform 5

Overall Structure Modeling and Modal Analysis of Liquid Rock...

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5th International Conference on Decision Science and Management, ICDSM 2023

作者： Du, Xueqin Wu, Qiong Gao, Hanjun Liu, Zhaojun Yang, Shuai He, Kun Li, Xuefei Liu, Zhaoyu Beihang University Technological Research Center of High-Efficient & Green Cnc Machining Process and Equipment State Key Laboratory of Virtual Reality Technology and Systems Beijing Engineering Beijing China Jingdezhen Research Institute of Beihang University Jingdezhen China Jingdezhen Research Institute of Beihang University Jingdezhen China Beijing Aerospace Propulsion Institute Beijing China

ISBN: (纸本)9798350325010

With the development of computer technology, dynamic simulation technology becomes more and more important in the engine design and development cycle. The development and use of relevant special programs greatly shorten the engine development cycle. In this paper, the components and connection modes of liquid rocket engine are simplified reasonably and efficiently, and a high-precision equivalent model with the maximum deviation of 9.754% and the minimum deviation of 0.423% of the natural frequency obtained by modal analysis is established;The ABAQUS secondary development technology is used to build a modal analysis platform, so as to quickly and accurately realize modal calculation, which is of guiding significance to the designers of liquid rocket engines. © 2023 IEEE.

关键词： Modal analysis

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Nh4al(So4)2·12h2o-Na2so4 Eutectic-Based Phase Change Materials with Excellent Light Absorbance, Enhanced Thermal Conductivity, and High Latent Heat Performance

SSRN

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SSRN 2024年

作者： Hu, Biao Li, Jiachen Du, Xin Zhang, Zhenying Wang, Hui State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Department of Architecture and Civil Engineering North China University of Science and Technology Tangshan063210 China Beijing Key Laboratory for Bioengineering and Sensing Technology School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing100083 China

To improve the suitability of pure hydrate salt phase change materials to meet different temperature requirements, increase its solar absorbance capacity, and improve its thermal conductivity, a novel ammonium aluminum sulfate dodecahydrate-sodium sulfate eutectic phase change materials with Ti2O3 and expanded graphite (EG) was successfully reported. The new eutectic phase change material realized successfully the phase change temperature regulation of single ammonium aluminum sulfate dodecahydrate by melt blending method. The black Ti2O3 after ball milling can absorb the efficiency of sunlight and simultaneal convert the light to thermal and the expanded graphite can further improve the thermal conductivity of phase change materials. The phase change temperature of the novel material was effectively regulated to 80 oC compared with 93 oC of pure aluminum sulfate dodecahydrate, which meets to requirements of solar collectors, residential radiator heating, and air conditioner heating fields. The thermal conductivity of ammonium aluminum sulfate dodecahydrate-sodium sulfate eutectic phase change materials/Ti2O3/EG was enhanced to 1.16 W·m-1·K-1 compared with 0.53 W·m-1·K-1 of the ammonium aluminum sulfate dodecahydrate-sodium sulfate eutectic phase change materials. The combination material shows the best solar absorbance capacity of 87.96% compared with the ammonium aluminum sulfate dodecahydrate-sodium sulfate eutectic phase change materials of 73.43%. Considering their huge superiority of highly efficient use of solar energy in natural resources, the new novel ammonium aluminum sulfate dodecahydrate-sodium sulfate eutectic-based phase change material with excellent light absorbance, enhanced thermal conductivity, and high latent heat performance is a very promising material for solar–thermal conversion and energy storage. © 2024, The Authors. All rights reserved.

关键词： Sulfur compounds

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Fluorinated inverse opal carbon nitride combined with vanadium pentoxide as a Z-scheme photocatalyst with enhanced photocatalytic activity

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Chinese Chemical Letters 2022年第8期33卷 3797-3801页

作者： Ningkai Ding Bin Chen Liang Zhou Lingzhi Wang Yongdi Liu Jinlong Zhang Juying Lei State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and TechnologyShanghai 200237China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and TechnologyShanghai 200237China

In this work,Z-scheme V_(2)O_(5) loaded fluorinated inverse opal carbon nitride(IO F-CN/V_(2)O_(5)) was synthesized as a product of ternary collaborative modification with heterostructure construction,element doping and inverse opal *** catalyst presented the highest photocatalytic activity and rate constant for degradation of typical organic pollutants Rhodamine B(RhB)and was also used for the efficient removal of antibiotics,represented by norfloxacin(NOR),sulfadiazine(SD)and levofloxacin(LVX).Characterizations confirmed its increased specific surface area,narrowed bandgap,and enhanced visible light utilization *** mechanism study including band structure study and electron paramagnetic resonance(EPR)proved the successful construction of Z-scheme heterojunction,which improved photogenerated charge carrier migration and provide sufficient free radicals for the degradation *** combination of different modifications contributed to the synergetic improvement of removal efficiency towards different organic pollutants.

关键词： Carbon nitride Inverse opal structure Vanadium pentoxide Fluorinate Organic pollutants degradation

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Chemical Disproportionation-Driven Li Metal-Free Prelithiation of Silicon Monoxide into Practical Anode Materials for Li-Ion Batteries

SSRN

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SSRN 2023年

作者： Gao, Zhe Chai, Fengtao Liu, Fan Liu, Jingbo Zhao, Chongchong Dong, Jiayu Huo, Feng Henan Key Laboratory of Engergy Storage Materials and Processes Zhengzhou Institute of Emerging Industrial Technology Zhengzhou450003 China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Henan University Zhengzhou450000 China Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

Silicon monoxide (SiO) has been explored and confirmed as a promising anode material, which can improve the energy density of Li-ion batteries (LIBs) that are required for the advancement of electric vehicles. However, its poor initial coulombic efficiency (ICE) strictly limits its commercial application. Here, we propose that chemical disproportionation-driven Li metal-free prelithiation method to improve the ICE of SiO anode. Low cost and stable lithium compound using lithium hydroxide (LiOH) reacts with commercially available solid SiO particles at a relatively low temperature (800℃) to produce reversible lithium silicate and nano/micro-structured silicon surrounded by SiO (Si–SiO–LixSiOy multicomponents) in the molten state, while that can also be demonstrated by transmission electron microscopy or X-ray photoelectron spectroscopy. The SiO which prelithiation and disproportionation, or SiO without the coating of carbon sample (PD-SiO), has high ICE (82.5%)，high charging capacity (1419mAh g-1) and highly stable cycling performance (94.6% capacity retention rate after 200 cycles at 0.5 A g-1). With this work, we tend to offer a promising direction toward the practical industrialization of SiO anode material. © 2023, The Authors. All rights reserved.

关键词： Lithium compounds

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