检索结果-内蒙古大学图书馆

GPU-Based in Situ Visualization for Large-Scale Discrete Element Simulations

Wireless Communications and Mobile Computing 2022年第1期2022卷

作者： Qin, Pengfei Xia, Zhaojie Gao, Guoxian Tao, Xiaofang Guo, Li State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing100190 China

The result of discrete element simulations has tens of thousands of time frames and hundreds of billions of interacting particles in each frame, which may lead to very large data sets. The existing postprocessing visualization technology cannot deal with such large-scale data, which will bring a negative impact to the simulation, affect the simulation speed, and make it difficult to realize the runtime steering. In this work, an attempt has been made to optimize visualization methods by directly accessing DEM simulation results, data exchanging straightly between GPUs, and accelerating pixel composition by GPU. The key feature of this work is that the entire process from DEM simulation to graphical rendering and image composition is done inside the same GPU. © 2022 Pengfei Qin et al.

关键词： Graphics processing unit

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Electrolyte for lithium protection: From liquid to solid

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green Energy & Environment 2019年第4期4卷 360-374页

作者： Xiaohong Wu Kecheng Pan Mengmin Jia Yufei Ren Hongyan He Lan Zhang Suojiang Zhang CAS Key Laboratory of Green Process and Engineering Beijing Key Laboratory of Ionic Liquids Clean ProcessState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China School of Chemical Engineering&Technology Tianjin UniversityTianjin 300072China

Lithium battery with high energy density and enhanced safety is undoubtedly the ideal choice for consumer electronics and electric *** anode such as lithium has been considered as the most effective way to enhance the energy density as it provides ultra-high theoretical capacity and the lowest redox ***,due to the low coulombic efficiency as well as safety concerns originated from dendrite issue of lithium,its further commercial utilization is *** growth is a common phenomenon in metal electrodeposition while the plating process of Li is more complicated than other metals for its high reactivity *** a matter of fact,the Li plating process is accompanied with the generation of solid electrolyte interphase(SEI)in which the electrolyte plays a vital *** this paper,recent advances of electrolytes for Li protect application are reviewed,from liquid to gel polymer and solid state,on which we find that although tremendous progress has been accomplished,there are still great challenges before Li metal anode could be commercially used.

关键词： Lithium battery Dendrite Lithium protection Electrolyte SEI

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Preparation of double-emulsion-templated microspheres with controllable porous structures by premix membrane emulsification

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Particuology 2019年第3期17卷 22-27页

作者： Xiangming Na Weiqing Zhou Tong Li Ding Hong Juan Li Guanghui Ma State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

A scalable and versatile strategy was developed for the fabrication of uniform polymeric microspheres with controllable interconnected porous structures. Uniform water-in-oil-in-water emulsions with linear poly(methyl methacrylate-glycidyl methacrylate) in the oil phase were generated by two-step premix membrane emulsification and used for constructing the microspheres. During the emulsion solidification process, internal water droplets were packed densely together, forming a thin oil film between the internal and external water phases. After solvent diffusion, the thin film can be ruptured and pores can be templated from the internal water droplets to form interconnected porous structures. Membranes with various pore sizes were obtained. The osmotic pressure and Laplace pressure balance were used to control the porosity and pore size precisely. The proposed method enables the fabrication of functional polymeric microspheres with uniform and controllable porous structures and particle sizes. This improves their performance and broadens the scope of their applications, especially in chromatographic separation.

关键词： Double emulsion Membrane emulsification Porous microsphere Uniform structure

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Special Issue for Zeolite Catalysis

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Chinese Journal of Structural Chemistry 2024年第4期43卷 1-1页

作者： Anmin Zheng Xiangju Meng Hao Xu Wei Chen Innovation Academy for Precision Measurement Science and Technology Chinese Academy of SciencesWuhanHubei430071China Zhejiang University HangzhouChina State Key Laboratory of Molecular&Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200062China Ghent University Technologiepark 46Zwijnaarde 9052Belgium

As the most successful heterogeneous catalyst,zeolite has found widespread application in methanol to olefins,alkane dehydrogenation,CO_(2)hydrogenation,syngas conversion,and various other *** provide a comprehensive understanding of the structure-performance relationship,a series of fundamental papers have been published in this special issue,covering topics ranging from zeolite synthesis to structural and acidic characterization,and catalytic reactions.

关键词： processes. zeolite methanol

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Correction: Coordination-assembled myricetin nanoarchitectonics for sustainably scavenging free radicals

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Beilstein journal of nanotechnology 2022年 13卷 570-571页

作者： Xiaoyan Ma Haoning Gong Kenji Ogino Xuehai Yan Ruirui Xing Graduate School of Bio-Applications and Systems Engineering Tokyo University of Agriculture and Technology Tokyo Japan. State Key Laboratory of Biochemical Engineering Chinese Academy of Sciences Institute of Process Engineering Beijing P. R. China. School of Chemical Engineering University of Chinese Academy of Sciences Beijing P. R. China.

[This corrects the article DOI: 10.3762/bjnano.13.23.].

关键词： antioxidant co-assembly glutathione myricetin nanoarchitectonics

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A Redox-Active Phenothiazine-based Pd2L4-Type Coordination Cage and Its Isolable Crystalline Polyradical Cations

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Angewandte Chemie 2024年第36期136卷

作者： Dr. Bin Huang Manfei Zhou Qiong-Yan Hong Meng-Xiang Wu Prof. Xiao-Li Zhao Prof. Lin Xu Prof. En-Qing Gao Prof. Hai-Bo Yang Prof. Xueliang Shi State Key Laboratory of Petroleum Molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China

Polyradical cages are of great interest because they show very fascinating physical and chemical properties, but many challenges remain, especially for their synthesis and characterization. Herein, we present the synthesis of a polyradical cation cage 1 4 . + through post-synthetic oxidation of a redox-active phenothiazine-based Pd 2 L 4 -type coordination cage 1 . It′s worth noting that 1 exhibits excellent reversible electrochemical and chemical redox activity due to the introduction of a bulky 3,5-di- tert -butyl-4-methoxyphenyl substituent. The generation of 1 4 . + through reversible electrochemical oxidation is investigated by in situ UV/Vis-NIR and EPR spectroelectrochemistry. Meanwhile, chemical oxidation of 1 can also produce 1 4 . + which can be reversibly reduced back to the original cage 1 , and the process is monitored by EPR and NMR spectroscopies. Eventually, we succeed in the isolation and single crystal X-ray diffraction analysis of 1 4 . + , whose electronic structure and conformation are distinct to original 1 . The magnetic susceptibility measurements indicate the predominantly antiferromagnetic interactions between the four phenothiazine radical cations in 1 4 . + . We believe that our study including the facile synthesis methodology and in situ spectroelectrochemistry will shed some light on the synthesis and characterization of novel polyradical systems, opening more perspectives for developing functional supramolecular cages.

关键词： Coordination cages Self-assembly Redox activity In situ spectroelectrochemistry Organic radicals

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Role of Thermolysin in Catalytic-Controlled Self-Assembly of Fmoc-Dipeptides

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CCS Chemistry 2020年第4期2卷 317-328页

作者： Meiyue Wang Qiansen Zhang Honglei Jian Shijie Liu Jieling Li Anhe Wang Qianqian Dong Peng Ren Xin Li Shuo Bai State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190 School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049 Shanghai Key Laboratory of Regulatory Biology Institute of Biomedical Sciences and School of Life SciencesEast China Normal UniversityShanghai 200241.

In recent years,short peptide self-assembled materials,prepared under the control of the thermolysin catalyst,have been investigated extensively and shown to acquire various morphologies and functions as building blocks for a wide range of biomaterials and device ***,the role played by thermolysin in this enzymatically triggered peptide self-assembly is still ***,we designed a series of Fmoc-dipeptide amphiphiles to explore the catalytic role of thermolysin.

关键词： peptide self-assembly thermolysin sequence catalytic efficiency

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Recent advances in frying processes for plant-based foods

Food Chemistry Advances

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Food Chemistry Advances 2022年 1卷

作者： Al Faruq, Abdulla Khatun, Mst. Husne Ara Azam, S.M. Roknul Sarker, Md. Sazzat Hossain Mahomud, Md. Sultan Jin, Xin State Key Laboratory of Food Science and Technology Jiangnan University Jiangsu Wuxi 214122 China State Key Laboratory of Biochemical Engineering Beijing Key Laboratory of Biomass Refining Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Department of Food Engineering and Technology Hajee Mohammad Danesh Science and Technology University Dinajpur Bangladesh Institute of Food Science and Technology Chinese Academy of Agricultural Science (CAAS)/Key Laboratory of Agro-Products Processing Ministry of Agriculture and Rural Affairs Beijing China

Background: Deep-fat fried foods are widely popular due to their distinct organoleptic and sensory characteristics. Deep-fat frying allows physical and chemical structural changes at the macro and micro levels. One of the greatest concerns regarding fried foods is their high oil content, and the excessive consumption of these foods has been linked to a range of metabolic diseases, including heart ailments, obesity, high cholesterol, and high blood pressure. Scope and approach: This review paper presents a comprehensive and up-to-date review of various innovative frying processes, such as vacuum frying (VF), microwave frying, microwave-assisted vacuum frying (MVF), ultrasound combined microwave vacuum frying (UMVF), air frying, and radiant frying. Additionally, it explains the oil uptake mechanism, oil quality, and the effects of different pretreatments and post-frying treatments on the frying process. key findings and conclusions: Innovative frying processes are considered promising and capable of producing healthier fried foods compared to traditional frying;they reduce oil uptake without deteriorating organoleptic and sensory characteristics. Specifically, vacuum-assisted frying technologies, such as VF, MVF, and UMVF have significantly reduced oil uptake and acrylamide production while preserving oil quality. In addition, appropriate pretreatment and post-frying techniques play an essential role in reducing oil uptake and optimizing the frying process by saving energy. © 2022 The Author(s)

关键词： Acrylamide Air frying Microwave Oil uptake Ultrasound Vacuum

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Preferentially Selective Recovery of Lithium from Spent Licoo2 by Sulfation Roasting of Mnso4

SSRN

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SSRN 2023年

作者： Anwar, Hira Xiang, Jialing Wang, Wei Jiang, Longjin Chang, Zhidong Wei, Daixiang Hassan, Mahamat Abderamane Dong, Bin Gao, Dekun Khan, Khyrullah Zhiyi, Chen Yao, Zhe School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing100083 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Anhui Chaoyue Environmental Protection Technology Co. Ltd Anhui Province Chuzhou239060 China Anhui Huihong Technology Co. Ltd Anhui Province Chuzhou239060 China

The selective recovery of valuable metals from spent lithium-ion batteries (LIBs) has engrossed significant scientific attention due to prompting environmental potential and addressing resource scarcity. Hereby, we propose an innovative and economically more environment friendly manganese sulfate roasting water leaching process to selectively recuperate lithium preferentially from spent LiCoO2 batteries. Notably, it is found that manganese sulfate roasting agents can be recirculated thoroughly without SOx emission during the sulfation roasting process. To better understand the conversion mechanism of LiCoO2, the effects of numerous parameters including, roasting time, roasting temperature, and a molar ratio of MnSO4/LiCoO2 during the recovering process were investigated. An exceptional recovery rate of 98.62% with a remarkable lithium selectivity of 99.35% by manganese sulfate leaching was achieved. This work proposes an environmentally friendly and promising strategy to extract lithium selectively from spent lithium cathodes without introducing SOx emission. © 2023, The Authors. All rights reserved.

关键词： Manganese compounds

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Topologically and Chemically Engineered Conjugated Polymer with Synergistically Intensified Electron Generation, Transfer and Utilization for Photocatalytic Nicotinamide Cofactor Regeneration

SSRN

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SSRN 2022年

作者： Li, Shihao Cheng, Yuqing Chen, Yu Li, Jing Sun, Yiying Shi, Jiafu Jiang, Zhongyi Key Laboratory for Green Chemical Technology Ministry of Education School of Chemical Engineering and Technology Tianjin University 92 Weijin Road Nankai District Tianjin300072 China School of Environmental Science and Engineering Tianjin University 92 Weijin Road Nankai District Tianjin300072 China 92 Weijin Road Nankai District Tianjin300072 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing10090 China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing100190 China

Electron generation, transfer and utilization in photocatalytic reduction reactions jointly govern the solar-to-chemical conversion efficiency. In natural photosynthesis, the ultrathin thylakoid membrane loads numerous pigments and proteins for light harvesting and electron transfer, which also integrates ferredoxin-NADP+ reductase bearing molecule hydrides for electron utilization in NADPH regeneration. Inspired by this, herein, conjugated polymer nanolayer coordinated with (Cp*RhCl2)2 (CPNL-Rh) is developed through a topological and chemical engineering strategy to synergistically intensify electron generation, transfer and utilization for NADH regeneration. Specifically, the triazine moieties well distributed in CPNL-Rh largely harvest visible light to generate electrons. The electrons are rapidly transferred to Rh cocatalytst through CPNL. Rh cocatalytst finally accepts electrons and protons in solution to form molecule hydrides for implementing NADH regeneration. The turnover frequency of CPNL-Rh for NADH regeneration reaches 44.8 h-1, among the highest value ever reported and ~346% higher than that of bulk CP with free Rh cocatalyst. © 2022, The Authors. All rights reserved.

关键词： Electrons

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