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Chinese chemical Letters 2024年第7期35卷 491-496页

作者： Qian Wang Ting Gao Xiwen Lu Hangchao Wang Minggui Xu Longtao Ren Zheng Chang Wen Liu institute of Science and Technology China Three Gorges CorporationBeijing 100038China State Key Laboratory of chemical Resource engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringCollege of ChemistryBeijing University of Chemical TechnologyBeijing 100029China

All solid-state lithium metal batteries(ASSLMBs)based on polymer solid electrolyte and lithium metal anode have attracted much attention due to their high energy density and intrinsic ***,the low ionic conductivity at room temperature and poor mechanical properties of the solid polymer electrolyte result in increased polarization and poor cycling stability of the Li metal *** order to improve the ionic conductivity at room temperature while maintaining mechanical strength,we combine the conductivity of short chain polyethylene oxide(PEO)and strength of styrene-maleic anhydride copolymer(SMA)to obtain a grafted block copolymer with nanophase separation structure,which has room temperature ionic conductivity up to 1.14×10^(-4)S/cm and tensile strength up to 1.4 ***||Li symmetric cell can work stably for more than 1500 h under the condition of 0.1 mA/cm^(2).Li||LiFePO_(4)full cells can deliver a high capacity of 151.4 mAh/g at 25℃and 0.2 C/0.2 C charge/discharge conditions,showing 85.6%capacity retention after 400 ***,the all solid state Li||LiFePO_(4)pouch cell shows excellent safety performance under different abuse *** results demonstrate that the nanophase separated,grafted alternate copolymer electrolyte has huge potential for application in Li metal batteries.

关键词： Solid polymer electrolyte All solid-state battery Li metal battery Copolymers Nanophase separation

research on Quantitative Identification of Three-Dimensional Connectivity of Fractured-Vuggy Reservoirs

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Energy engineering 2024年第5期121卷 1195-1207页

作者： Xingliang Deng Peng Cao Yintao Zhang Yuhui Zhou Xiao Luo Liang Wang Exploration and Development research institute PetroChina Tarim Oilfield CompanyKorla841000China Petrochina Hangzhou research institute of Geology Hangzhou310023China School of petroleum engineering Yangtze UniversityWuhan430100China

The fractured-vuggy carbonate oil resources in the western basin of china are extremely *** connectivity of carbonate reservoirs is complex,and there is still a lack of clear understanding of the development and topological structure of the pore space in fractured-vuggy ***,effective prediction of fractured-vuggy reservoirs is *** view of this,this work employs adaptive point cloud technology to reproduce the shape and capture the characteristics of a fractured-vuggy *** identify the complex connectivity among pores,fractures,and vugs,a simplified one-dimensional connectivity model is established by using the meshless connection element method(CEM).Considering that different types of connection units have different flow characteristics,a sequential coupling calculation method that can efficiently calculate reservoir pressure and saturation is *** automatic history matching,the dynamic production data is fitted in real-time,and the characteristic parameters of the connection unit are *** results show that the three-dimensional connectivity model of the fractured-vuggy reservoir built in this work is as close as 90%of the fine grid model,while the dynamic simulation efficiency is much higher with good accuracy.

关键词： Fractured-vuggy reservoir three-dimensional connectivity connection unit dynamic prediction automatic history matching

Prediction of Porous Media Fluid Flow with Spatial Heterogeneity Using Criss-Cross Physics-Informed Convolutional Neural Networks

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Computer Modeling in engineering & Sciences 2024年第2期138卷 1323-1340页

作者： Jiangxia Han Liang Xue Ying Jia Mpoki Sam Mwasamwasa Felix Nanguka Charles Sangweni Hailong Liu Qian Li State Key Laboratory of petroleum Resources and Prospecting China University of PetroleumBeijing102249China Department of Oil-Gas Field Development engineering College of Petroleum EngineeringChina University of PetroleumBeijing102249China Exploration Production research institute SinopecBeijing102249China Ministry of Energy Tanzania Petroleum Development CorporationTowerDar es Salaam2774Tanzania Ministry of Energy Building Petroleum Upstream Regulatory Authority in Tanzania(PURA)Dar es Salaam11439Tanzania

Recent advances in deep neural networks have shed new light on physics,engineering,and scientific *** the data-centered viewpoint with physical simulation is one of the research *** physicsinformedneural network(PINN)is currently the most general framework,which is more popular due to theconvenience of constructing NNs and excellent generalization *** automatic differentiation(AD)-basedPINN model is suitable for the homogeneous scientific problem;however,it is unclear how AD can enforce fluxcontinuity across boundaries between cells of different properties where spatial heterogeneity is represented bygrid cells with different physical *** this work,we propose a criss-cross physics-informed convolutionalneural network(CC-PINN)learning architecture,aiming to learn the solution of parametric PDEs with spatialheterogeneity of physical *** achieve the seamless enforcement of flux continuity and integration ofphysicalmeaning into CNN,a predefined 2D convolutional layer is proposed to accurately express transmissibilitybetween adjacent *** efficacy of the proposedmethodwas evaluated through predictions of several petroleumreservoir problems with spatial heterogeneity and compared against state-of-the-art(PINN)through numericalanalysis as a benchmark,which demonstrated the superiority of the proposed method over the PINN.

关键词： Physical-informed neural networks(PINN) flow in porous media convolutional neural networks spatial heterogeneity machine learning

chemical, carbon and sulfur isotopic compositions constrain the origin of Upper Carboniferous-Lower Triassic gases in eastern Sichuan Basin, SW china

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Science china Earth Sciences 2024年第10期67卷 3169-3185页

作者： Chunfang CAI Ilya KUTUZOV Wenhua MEI Daowei WANG Bing LUO Shipeng HUANG Bing HE Alon AMRANI china University of petroleum National Key Lab Petroleum Resource&EngineeringBeijing 102249China State Key Laboratory of Lithospheric and Environmental Coevolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China institute of Earth Sciences The Hebrew UniversityJerusalem 91904Israel College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Yulin University Yulin 719000China research institute of Exploration and Development Southwest Oil&Gas Field CompanyPetroChinaChengdu 610051China Petrochina Research Institute of Petroleum Exploration and DevelopmentBeijing 100083China

Methane dominated gas is one of the cleanest energy resources;however, there is no direct method to determine its source rock. Natural gases produced from the eastern Sichuan Basin together with seismic data were studied for their sources and secondary alteration by thermochemical sulfate reduction(TSR). Our results demonstrate that Upper Permian to Lower Triassic(P_(3)ch-T_(1)f) gases in the surrounding of the Kaijiang-Liangping area show volatile organic sulfur compounds(VOSCs) δ^(34)S values close to those of the associated H_(2)S, and may have been altered by methane-dominated TSR, resulting in positive shift in methane δ^(13)C_(1)values with increasing TSR extents. Other(or group 2) gases produced from the P_(3)ch-T_(1)f reservoirs from the southern area and the Upper Carboniferous to Middle Permian(C_(2)h-P_(2)q) from the eastern Sichuan Basin are not significantly changed by TSR, show similar δ^(34)S values between the kerogens and some VOSCs, and may have been derived from the Lower Silurian and Middle Permian source rocks. This study demonstrates a case for the first time showing the δ^(34)S values of VOSCs can be used as a tool for direct correlation between non-TSR altered gas and source rocks. Methane-dominated gas pools can be found using gas and source rock geochemistry combined with seismic data.

关键词： Sulfur isotopes Volatile organic sulfur compounds Thermochemical sulfate reduction Sichuan Basin Gas-source rock correlation

Pt confined in Sn-ECNU-46 zeolite for efficient alkane dehydrogenation

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Chinese Journal of Structural Chemistry 2024年第4期43卷 15-23页

作者： Naihong Wang Longkang Zhang Yejun Guan Peng Wu Hao Xu Shanghai Key Laboratory of Green Chemistry and chemical Processes School of Chemistry and Molecular engineering East China Normal UniversityShanghai200062China State Key Laboratory of petroleum Molecular&Process engineering SKLPMPE Sinopec Research Institute of Petroleum Processing Co.LTD.Beijing100083China East china Normal University Shanghai200062China

Highly dispersed and stable Pt-based catalysts play a crucial role in constructing efficient catalytic systems for alkane *** this study,a novel bimetallic Pt-Sn catalyst confined in extra-large-pore ECNU-46 zeolite(denoted as Pt/Sn-ECNU-46)is prepared by *** open-site framework Sn species((SiO)_(3)Sn-OH)serve as anchors to interact with Pt species,favoring the high dispersion of *** the other hand,the framework Sn species act as the second metal to regulate the geometrical and electronic environment of Pt species,thus suppressing their ***/Sn-ECNU-46 achieves a good performance in propane dehy-drogenation(PDH)reaction with high initial propane conversion(46%)and propylene selectivity(>99%)as well as regeneration *** addition,Pt/Sn-ECNU-46 is also active in the dehydrogenation of *** study explores the application of extra-large-pore zeolite as support in constructing metal-confined catalysts for alkane dehydrogenation.

关键词： Alkane dehydrogenation Heteroatom-containing zeolite Zeolite confined catalyst Pt-based catalyst

High-efficiency CO_(2) sequestration through direct aqueous carbonation of carbide slag: determination of carbonation reaction and optimization of operation parameters

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Frontiers of Environmental Science & engineering 2024年第1期18卷 157-167页

作者： Zhiqiang Wang Longpeng Cui Yanfang Liu Jili Hou Hongwei Li Liang Zou Fuxia Zhu Department of Coal and Syngas Conversion Sinopec Research Institute of Petroleum Processing Co.Ltd.Beijing 100083China

Under the dual-carbon target, CO_(2) mineralization through solid wastes presents a mutually beneficial approach for permanent carbon emission reduction at a low material cost, while also enabling the resource utilization of these wastes. However, despite its potential, a comprehensive understanding about the effect of industrial solid waste properties and operating parameters on the carbonation process, and the mechanism of direct aqueous carbonation is still lacking. A series of experiments were conducted to compare the carbonation performance of fly ash, steel slag, and carbide slag. Subsequently, CO_(2) mineralization by carbide slag was systematically studied under various operating parameters due to its high CO_(2) sequestration capacity. Results showed the reactivity of CaO and Ca(OH)2 was higher than that of CaO·SiO_(2) and 2CaO·SiO_(2). Carbide slag demonstrated a sequestration capacity of 610.8 g CO_(2)/kg and carbonation efficiency ζCa of 62.04% under the conditions of 65 ℃, 1.5 MPa initial CO_(2) pressure, 15 mL/g liquid-to-solid ratio, and 200 r/min stirring speed. Moreover, the formation of carbonates was confirmed through XRD, SEM-EDS, TG, and FTIR. A mechanism analysis revealed that initially, the rate of the carbonation process was primarily controlled by the mass transfer of CO_(2) in the gas–liquid interface. However, the rate-determining step gradually shifted to the mass transfer of Ca2+ in the solid–liquid interface as the reaction time increased. This study lays the foundation for the large-scale implementation of CO_(2) sequestration through carbide slag carbonation.

关键词： Industrial by-products Direct aqueous carbonation CO_(2)sequestration Mass transfer

Investigation of pore structure alteration and permeability enhancement of shale matrix by supercritical water treatment after hydraulic fracturing

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petroleum 2024年第2期10卷 265-274页

作者： Yili Kang Peisong Li Wangkun Cao Mingjun Chen Lijun You Jiang Liu Zhehan Lai State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500China institute of engineering Technology Petro China Coalbed Methane Company LimitedXi'an710082China chemical and petroleum engineering University of CalgaryCalgaryT2N 1N4Canada

Shale gas reservoirs are unconventional tight gas reservoirs,in which horizontal wells and hydraulic fracturing are required to achieve commercial *** fracture networks created by hydraulic fracturing can increase the drainage area extensively to enhance shale gas ***,large volumes of fracturing fluid that is difficult to flow back to the surface and remained in the shale formation,will inevitably lead to damages of the shale formations and limit the effectiveness of *** water(SCW)treatment after hydraulic fracturing is a new method to enhance shale gas recovery by using appropriate heat treatment methods to the specific formation to convert the retained fracturing fluid into a supercritical state(at temperatures in excess of 373.946°C and pressures in excess of 22.064 MPa).An experiment was conducted to simulate the reaction between shale and SCW,and the capacity of SCW treatment to enhance the permeability of the shale was evaluated by measuring the response of the shale porosity and permeability on SCW *** experimental results show that the shale porosity and permeability increase by 213.43%and 2198.37%,*** pore structure alteration and permeability enhancement of the shale matrix were determined by analyzing the changes in pore structure and mineral composition after SCW *** mechanisms that affect pore structure and mineral composition include oxidative catalysis decomposition of organic matters and reducing minerals,acid-catalyzed decomposition of carbonate minerals and feldspar minerals,hydrothermal catalysis induced fracture extension and cementation weakening induced fracture *** treatment converts harm into a benefit by reducing the intrusion of harmful substances into the shale formation,which will broaden the scope and scale of shale formation stimulation.

关键词： Shale gas Formation damage control Formation heat treatment Supercritical water

Defect detection of light guide plate based on improved YOLOv5 networks

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Optoelectronics Letters 2024年第9期20卷 560-567页

作者： XIAO Ming GONG Yefei WANG Hongding LU Mingli GAO Hua School of Electrical engineering Yancheng Institute of TechnologyYancheng 224007China School of Electrical and Automation engineering Changshu Institute of TechnologyChangshu 215500China School of Physics and Electronic engineering Northeast Petroleum UniversityDaqing 163318China Wuxi Novo Automation Technology corporation Wuxi 214000China

Light guide plate(LGP)is a kind of material used in the backlight *** to improve the quality control of LGP has become the focus of research in the *** address issues such as low gray contrast and a high proportion of small target defects in LGP images,an improved you only look once version 5(YOLOv5)neural network based on multi-scale dilation convolution and a novel loss function is proposed.

关键词： network plate light

LiOH-mediated crystallization regulating strategy enhancing electrochemical performance and structural stability of SiO anodes for lithium-ion batteries

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Nano research 2024年第9期17卷 8174-8183页

作者： Zhengqiu He Zewen Xu Yu Long Jiexin Zhu Hao Yang Kuo Chen Qiang Zhou Ning Cao Xiaobo Wang Juan Wang Xiaojie Tan Litao Wang Luhai Wang Shengbao He Mengdi Zhang Han Hu Mingbo Wu State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore School of chemical Sciences University of AucklandAuckland 1010New Zealand Petrochemical research institute Petro China Company Ltd.Beijing 102206China

Silicon monoxide(SiO)is widely recognized as a promising anode material for next-generation lithium-ion *** to its metastable amorphous structure,SiO exhibits a highly complex degree of crystallization at the microscopic level,which significantly influences its electrochemical *** a consequence,accurately regulating the crystallization of SiO,and further establishing the relationship between crystallinity and electrochemical performance are very critical for SiO *** this article,carbon-coated SiO materials with different crystallinity degrees were synthesized using lithium hydroxide monohydrate(LiOH·H_(2)O)as a structural modifier to reveal this ***,moderate amount of LiOH·H_(2)O addition results in the forming of an oxygen-rich shell,which effectively inhibits the inward migration of oxygen atoms on the SiO surface and suppresses volume ***,the crystallinity of SiO will gradually enhance and the crystalline phase appears with increasing the amount of LiOH·H_(2)O,which will generate a deteriorative Li+diffusion *** balancing the above two contradictions,a mass fraction of 1%LiOH·H_(2)O for the additive yielded SiO@C-1,characterized by optimal ***@C-1 demonstrates exceptional long-cycle stability with 74.8%capacity retention after 500 cycles at 1 A·g^(-1).Furthermore,it achieves a capacity retention of 52.2%even at a high density of 5 A·g^(-1).This study first reveals the relationship between SiO crystallinity and electrochemical performance,which efficiently guides the design of high-performance SiO anodes.

关键词： lithium-ion batteries SiO anodes crystallinity regulation high rate long life

Efficient nitrate electroreduction over Mn-doped Cu catalyst via regulating N-containing intermediates adsorption configuration

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Science china Chemistry 2024年第6期67卷 1969-1975页

作者： Limin Wu Shunhan Jia Libing Zhang Ruhan Wang Jiaqi Feng Xiaofu Sun Buxing Han Beijing National Laboratory for Molecular Sciences CAS Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesCenter for Carbon Neutral ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing100190China School of chemical Sciences University of Chinese Academy of SciencesBeijing100049China College of chemical engineering and Environment China University of PetroleumBeijing102249China Shanghai Key Laboratory of Green Chemistry and chemical Processes School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200062China

The electrochemical reduction of NO_(3)^(-)to NH_(3)holds promise for economic and environmental benefits,presenting an energyefficient alternative to the traditional Haber-Bosch ***,challenges exist due to its sluggish kinetics,multiple intermediates,and various reaction *** this study,Mn-doped-Cu catalyst was synthesized and employed for electrochemical NO_(3)^(-)-to-NH_(3)*** doping of Mn into Cu resulted in exceptional performance,achieving a FE of 95.8%and an NH_(3)yield rate of 0.91 mol g^(-1)h^(-1)at-0.6 V in a neutral electrolyte at low NO_(3)^(-)*** experimental studies and theoretical calculations revealed that the Mn dopant enhanced the kinetic rate of NO_(2)~--to-NH_(3)and induced a distinct configuration of**** alteration decreased the energy barrier of*NO-to-*NOH,consequently promoting the conversion of NO_(3)^(-)-to-NH_(3).

关键词： nitrate reduction electrocatalysis ammonia synthesis N-intermediate green chemistry