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Automated synthesis of steady-state continuous processes using reinforcement learning

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 288-302 doi: 10.1007/s11705-021-2055-9

Abstract: Automated flowsheet synthesis is an important field in computer-aided process engineering.The present work demonstrates how reinforcement learning can be used for automated flowsheet synthesisTherein, flowsheet synthesis is modelled as a game of two competing players.

Keywords： automated process synthesis     flowsheet synthesis     artificial intelligence     machine learning     reinforcement    

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Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 372-375 doi: 10.1007/s11705-010-0570-1

Abstract: This result confirmed the catalytic effect of potassium carbonate on the synthesis of calcium carbide

Keywords： calcium carbide     synthesis     catalysis    

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Study on a green synthesis of

Aixin WANG, Yuanbin SHE, Jing FAN

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 219-221 doi: 10.1007/s11705-009-0058-z

Abstract: A novel method for the synthesis of -oxo-bis[tetraarylporphyrinatoiron] ([TRPPFe] O) based on the reaction

Keywords： μ-oxo-bis[tetraarylphenylporphinatoiron]     green synthesis     water    

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Design methodology, synthesis, and control strategy of the high-speed planetary rover

Frontiers of Mechanical Engineering 2024, Volume 19, Issue 2, doi: 10.1007/s11465-024-0783-5

Abstract: The planned missions to explore the surfaces of the Moon and Mars require high exploration efficiency, thus imposing new demands on the mobility system of planetary rovers. In this paper, a design method for a high-speed planetary rover (HPR) is proposed, and the representative configurations are modeled and simulated. First, the influence of the planetary surface environment on the design of HPRs is analyzed, and the design factors for HPRs are determined by studying a single-wheel suspension. Second, a design methodology for HPRs is proposed. The adaptive suspension mechanisms of a four-wheeled rover are synthesized using the all-wheel-attachment condition and position and orientation characteristics theory, which are expressed in the form of a graph theory for the increase in elastic components and active joints. Finally, a dynamic model is built, and a simulation is carried out for the proposed rover. The validity of the proposed method and rover is verified, thus highlighting their potential application in future planetary exploration.

Keywords： design methodology     spectrum analysis     high-speed     planetary rover     type synthesis    

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Advantageous mechanochemical synthesis of copper(I) selenide semiconductor, characterization, and properties

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 3,   Pages 433-442 doi: 10.1007/s11705-021-2066-6

Abstract: Copper(I) selenide-nanocrystalline semiconductor was synthesized via one-step mechanochemical synthesisThe kinetics of synthesis was followed by X-ray powder diffraction analysis and specific surface areaThis type of Cu2Se synthesis can be easily adapted to production dimensions using an industrialThe advantages of mechanochemical synthesis represent the potential for inexpensive, environmentally-friendly

Keywords： Cu2Se     berzelianite     nanocrystalline semiconductor     mechanochemical synthesis     planetary ball    

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Kinematical synthesis of an inversion of the double linked fourbar for morphing wing applications

J. AGUIRREBEITIA, R. AVILéS, I. FERNáNDEZ, M. ABASOLO

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 17-32 doi: 10.1007/s11465-013-0364-5

Abstract: The structure of the mechanism is obtained using structural synthesis concepts, from an initial conceptualuncertainty positions are derived for this mechanism in order to face the last step, the dimensional synthesis; in this sense, two kinds of dimensional synthesis are arranged to guide the wing along two positions

Keywords： morphing wing     structural synthesis     dimensional synthesis     geometrical kinematics    

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Seed-induced synthesis of functional MFI zeolite materials: Method development, crystallization mechanisms

Zhaoqi Ye, Hongbin Zhang, Yahong Zhang, Yi Tang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 143-158 doi: 10.1007/s11705-019-1852-x

Abstract: As an important zeolite material, MFI zeolites, as well as their controllable synthesis, are of greatMoreover, on the basis of their structural features and crystallization behaviors in seed-induced synthesis

Keywords： seed-induced synthesis     MFI zeolite     synthesis mechanism     catalytic property    

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Biomass to dimethyl ether by gasification/synthesis technology

Tiejun WANG, Yuping LI, Longlong MA, Chuangzhi WU

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 330-339 doi: 10.1007/s11708-010-0121-y

Abstract: economic analysis was done for the biomass to dimethyl ether (DME) technology to promote the gasification/synthesisThe technology of biomass gasification/synthesis has obvious advantages, including production flexibilityBiomass gasification/synthesis technology integrates bio-DME synthesis, fertilizer production, electricity

Keywords： technical and economic analysis     biomass     dimethyl ether     gasification/synthesis    

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Multi-resolution texture synthesis from turntable image sequences

Xuedong WANG, Xiaojun WU, Xiaorong ZHANG

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 72-80 doi: 10.1007/s11465-012-0305-8

Abstract:

Texture synthesis and texture mapping are important technologies for rendering realistic three-dimensionalpaper, we propose a fast method to construct high quality texture map for multi-resolution texture synthesis

Keywords： texture synthesis     multi-resolution     texture map     texture mapping    

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Catalytic activity of manganese oxide supported on alumina in the synthesis of quinoxalines

Rekha M., H. Kathyayini, N. Nagaraju

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 415-421 doi: 10.1007/s11705-013-1360-3

Abstract: Two catalysts, alumina and manganese oxide supported on alumina, have been prepared by calcination and precipitation-impregnation methods, respectively. The catalysts are characterised by the following techniques: Brunner-Emmett-Teller-N adsorption-desorption for surface area, temperature programmed desorption of NH and -butyl amine back titration methods for surface acidity, powder X-ray diffraction for textural properties, and Fourier transform infrared spectroscopy for the anionic radicals. The catalytic activity has been determined under heterogeneous conditions in the condensation reaction between -phenylenediamine and benzil. The product purity is checked by thin-layer chromatography and melting point. The products are also analysed by LC-MS and H-NMR techniques. The yields of the products have been found to be good and catalysts exhibited excellent recyclability. The effect of changing the reaction parameters such as temperature, reaction time, amount of the catalyst, nature of solvent and molar ratio of reactants on the yield of the product has been studied. The surface acidity of the catalysts plays an important role in activating the reaction.

Keywords： alumina     manganese oxide deposited on alumina     quinoxaline synthesis    

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Effect of seawater salinity on the synthesis of zeolite from coal fly ash

Yanqing YU, Xiaoliang LI, Xiaolan ZOU, Xiaobin ZHU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 54-61 doi: 10.1007/s11783-013-0493-4

Abstract: A novel method for the synthesis of zeolite was developed in this paper.The synthesis was carried out by hydrothermal activation after alkali fusion and coal fly ash (CFA) wasThe results show that seawater salinity plays an important role in zeolite synthesis with CFA duringallows for the efficient disposal of by-products; therefore, the application of seawater in zeolite synthesis

Keywords： coal fly ash (CFA)     seawater salinity     zeolite synthesis    

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Size-controlled green synthesis of silver nanoparticles assisted by L-cysteine

Wenchao Zhang,Lin Zhang,Yan Sun

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 494-500 doi: 10.1007/s11705-015-1527-1

Abstract: A green and size-controlled synthesis of silver nanoparticles (Ag NPs) in aqueous solution with the assistance

Keywords： nanoparticles     silver     L-cysteine     size distribution     synthesis    

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Plasma-assisted ammonia synthesis under mild conditions for hydrogen and electricity storage: Mechanisms

Frontiers in Energy doi: 10.1007/s11708-024-0949-1

Abstract: However, the traditional Haber−Bosch (H−B) process for ammonia synthesis necessitates high temperatureIn contrast, dielectric barrier discharge (DBD) plasma-assisted ammonia synthesis operates at low temperaturesThis review delves into a comprehensive analysis of the low-temperature DBD plasma-assisted ammonia synthesisDrawing from current research, it evaluates the economic feasibility of the DBD plasma-assisted ammonia synthesis

Keywords： plasma catalysis     nitrogen fixation     ammonia synthesis     hydrogen storage     catalyst     carbon neutralization    

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Synthesis and

Wen Zhao, Jiahua Xing, Tianming Xu, Weili Peng, Xinghai Liu

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 363-368 doi: 10.1007/s11705-016-1595-x

Abstract: Pyrazole carboxamide derivatives represent an important class of fungicides in agrochemicals. To find more novel structural pyrazole carboxamides, a novel series of 3-(trifluoromethyl)-1 -pyrazole-4-carboxamide compounds were prepared from ethyl 4,4,4-trifluoroacetoacetate and triethyl orthoformate as starting materials. All the products were characterized by Fourier transform infrared spectroscopy, H nuclear magnetic resonance (NMR), C NMR, F NMR and mass spectrography. The bioassay results showed these fluorine-containing pyrazole carboxamides have a weak fungicidal activity but some of them exhibit a good nematocidal activity against .

Keywords： fluorinated pyrazole carboxamide     synthesis     nematocidal activity     structure and activity relationship    

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Latest advances in ionic liquids promoted synthesis and application of advanced biomass materials

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 798-816 doi: 10.1007/s11705-023-2316-x

Abstract: This review summarizes the multiple roles of ionic liquids in promoting the synthesis and application

Keywords： biomass materials     functional materials     ionic liquids     synthesis     structure-property relationship    

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Title Author Date Type Operation

Automated synthesis of steady-state continuous processes using reinforcement learning

Journal Article

Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Journal Article

Study on a green synthesis of

Aixin WANG, Yuanbin SHE, Jing FAN

Journal Article

Design methodology, synthesis, and control strategy of the high-speed planetary rover

Journal Article

Advantageous mechanochemical synthesis of copper(I) selenide semiconductor, characterization, and properties

Journal Article

Kinematical synthesis of an inversion of the double linked fourbar for morphing wing applications

J. AGUIRREBEITIA, R. AVILéS, I. FERNáNDEZ, M. ABASOLO

Journal Article

Seed-induced synthesis of functional MFI zeolite materials: Method development, crystallization mechanisms

Zhaoqi Ye, Hongbin Zhang, Yahong Zhang, Yi Tang

Journal Article

Biomass to dimethyl ether by gasification/synthesis technology

Tiejun WANG, Yuping LI, Longlong MA, Chuangzhi WU

Journal Article

Multi-resolution texture synthesis from turntable image sequences

Xuedong WANG, Xiaojun WU, Xiaorong ZHANG

Journal Article

Catalytic activity of manganese oxide supported on alumina in the synthesis of quinoxalines

Rekha M., H. Kathyayini, N. Nagaraju

Journal Article

Effect of seawater salinity on the synthesis of zeolite from coal fly ash

Yanqing YU, Xiaoliang LI, Xiaolan ZOU, Xiaobin ZHU

Journal Article

Size-controlled green synthesis of silver nanoparticles assisted by L-cysteine

Wenchao Zhang,Lin Zhang,Yan Sun

Journal Article

Plasma-assisted ammonia synthesis under mild conditions for hydrogen and electricity storage: Mechanisms

Journal Article

Synthesis and

Wen Zhao, Jiahua Xing, Tianming Xu, Weili Peng, Xinghai Liu

Journal Article

Latest advances in ionic liquids promoted synthesis and application of advanced biomass materials

Journal Article