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Adsorption behavior of CO2/h2s mixtures in calcite slit nanopores for CO2 storage:An insight from molecular perspective

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Petroleum science 2024年第4期21卷 2444-2456页

作者： Cheng Qian Zhen-hua rui Yue-liang liu Kai Du Chen liu Yang Zhao Xiao-Min Ma state Key laboratory of Petroleum resources and Engineering China University of Petroleum College of Petroleum Engineering China University of Petroleum College of Carbon Neutrality Future Technology China University of Petroleum College of Petroleum China University of Petroleum-Beijing at Karamay College of Mining Engineering Taiyuan University of Technology

It is acknowledged that injecting CO2into oil reservoirs and saline aquifers for storage is a practical and affordable method for *** CO2produced from industrial exhaust contains impurity gases such as h2s that might impact CO2sequestration due to competitive *** study makes a commendable effort to explore the adsorption behavior of CO2/h2s mixtures in calcite slit *** Canonical Monte Carlo（GCMC） simulation is employed to reveal the adsorption of CO2,h2s as well as their binary mixtures in calcite *** show that the increase in pressure and temperature can promote and inhibit the adsorption capacity of CO2and h2s in calcite nanopores,***2exhibits stronger adsorption on calcite surface than *** energy plays the dominating role in the adsorption *** energy accounts for 97.11% of the CO2-calcite interaction energy and 56.33% of the h2s-calcite interaction energy at 10 MPa and 323.15 *** presence of h2s inhibits the CO2adsorption in calcite nanopores due to competitive adsorption,and a higher mole fraction of h2s leads to less *** quantity of CO2adsorbed is lessened by approximately 33% when the mole fraction of h2s reaches ***2molecules preferentially occupy the regions near the po re wall and h2s molecules tend to reside at the center of nanopore even when the molar ratio of CO2is low,indicating that CO2has an adsorption priority on the calcite surface over *** addition,moisture can weaken the adsorption of both CO2and h2s,while CO2is more *** interestingly,we find that pure CO2is more suitable to be sequestrated in the shallower formations,i.e.,500-1500 m,whereas CO2with h2s impurity should be settled in the deeper reservoirs.

关键词： Adsorption behavior CO 2 /h 2 s binary mixtures Molecular perspective Calcite slit nanopores CO 2 sequestration

Fast charge transfer kinetics in sv-ZnIn_(2)s_(4)/sb_(2)s_(3)s-scheme heterojunction photocatalyst for enhanced photocatalytic hydrogen evolution

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rare Metals 2024年第2期43卷 533-542页

作者： Wei li Jia-Jun li Zhi-fei liu hong-Yu Ma Peng-fei Fang rui Xiong Jian-hong Wei Key laboratory of Artificial Micro-and Nano-structures of Ministry of Education School of Physics and TechnologyWuhan UniversityWuhan430072China

Constructing a s-scheme heterojunction with tight interface contact and fast charge transfer is beneficial to improving the photocatalytic hydrogen evolution ***,a unique one-dimensional(1D)/two-dimensional(2D)s-scheme heterojunction containing 1D sb_(2)s_(3) nanorods and 2D ZnIn_(2)s_(4) with affluent sulfur vacancies(denoted as sv-ZnIn_(2)s_(4)@sb_(2)s_(3)) was *** introduced sulfur vacancy can promote the effective adsorption of h+for the following interfacial hydrogen-evolution ***,the larger contact area and stronger electron interaction between sb_(2)s_(3) and ZnIn_(2)s_(4) effectively inhibits the recombination of photo-generated electron–hole pairs and abridges the migration distance of *** a result,the optimal sv-ZnIn_(2)s_(4)@sb_(2)s_(3) sample achieves h_(2) evolution activity of 2741.3 mol·h^(−1)·g^(−1),which is 8.6 times that of pristine ZnIn_(2)s_(4) and 3.0 times that of the sv-ZnIn_(2)s_(4) *** on the experimental result,the photo-reactivity s-scheme mechanism of hydrogen evolution from water splitting with sv-ZnIn_(2)s_(4)@sb_(2)s_(3) is *** work provides an effective method for developing s-scheme heterojunction composites of transition metal sulfide with high hydrogen evolution performance.

关键词： ZnIn_(2)s_(4) nanosheets s-scheme heterojunction sulfur vacancy Charge transfer and separation Photocatalytic h_(2)evolution

Endoscopic treatment of biliopancreatic pathology in patients with Whipple's pancreaticoduodenectomy surgical variants: lessons learned from single-balloon enteroscopy-assisted ERCP

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hepatobiliary & Pancreatic Diseases International 2024年第5期23卷 509-514页

作者： Rodrigo Garcés-Durán laurent Monino Pierre h Deprez hubert Piessevaux Tom G Moreels Department of Gastroenterology and hepatology Universitécatholique de LouvainCliniques Universitaires Saint-LucAvenue Hippocrates 101200 BrusselsBelgium

Background: Endoscopic treatment of biliopancreatic pathology is challenging due to surgically altered anatomy after Whipple's pancreaticoduodenectomy. This study aimed to evaluate the feasibility and safety of single-balloon enteroscopy-assisted endoscopic retrograde cholangiopancreatography(sBE-ERCP) to treat biliopancreatic pathology in patients with Whipple's pancreaticoduodenectomy surgical variants. Methods: We retrospectively analyzed 106 sBE-ERCP procedures in 46 patients with Whipple's variants. Technical and clinical success rates and adverse events were evaluated. results: Biliary sBE-ERCP was performed in 34 patients and pancreatic sBE-ERCP in 17, including 5 with both indications. From a total of 106 sBE-ERCP procedures, 76 were biliary indication with technical success rate of 68/76(90%) procedures and clinical success rate of 30/34(88%) patients. Mild adverse event rate was 8/76(11%), without serious adverse events. From a total of 106 sBE-ERCP procedures, 30 were pancreatic indication with technical success rate of 24/30(80%) procedures( P = 0.194 vs. biliary sBEERCP) and clinical success rate of 11/17(65%) patients( P = 0.016 vs. biliary sBE-ERCP). Mild adverse event rate was 6/30(20%)( P = 0.194 vs. biliary sBE-ERCP), without serious adverse events. After sBE-ERCP failure, endoscopic ultrasound-guided drainage, percutaneous drainage and redo surgery were alternative therapeutic options. Conclusions: Biliopancreatic pathology after Whipple's pancreaticoduodenectomy variants can be treated using sBE-ERCP without serious adverse events. Technical and clinical success rates are high for biliary indications, whereas clinical success rate of pancreatic indications is significantly lower. sBE-ERCP can be considered as first-line treatment option in this patient group with surgically altered anatomy.

关键词： Enteroscopy Endoscopic retrograde cholangiopancreatography Pancreaticoduodenectomy surgically altered anatomy Whipple’s procedure

Enhancing li-s battery performance via functional polymer binders for polysulfide inhibition

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Journal of Energy Chemistry 2024年第10期97卷 228-236页

作者： Jinpeng Jian Qian Chen hao sun rui li Yaolin hou Yulong liu Jia liu haiming Xie Jiefang Zhu Nation & local United Engineering laboratory for Power Batteries Faculty of Chemistry Northeast Normal University Jilin Province Dongchi New Energy Technology Co. Ltd. Department of Chemistry-?ngstr?m laboratory Uppsala University

The commercialization of lithium-sulfur(li-s) batteries faces several challenges,including poor conductivity,unexpected volume expansion,and continuous sulfur loss from the cathode due to redox *** this study,we introduce a novel polymer via a simple cross-linking between poly(ether-thioureas)(PETU) and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT:Pss) as a bifunctio nal binder for li-s batteries(devotes as "PPTU").Compared to polyvinylidene fluoride(PVDF),as-prepared PPTU exhibits significantly higher electrical conductivity,facilitating electrochemical ***,PPTU demonstrates effective adsorption of lithium polysulfides,leading to improved cycling stability by suppressing the shuttling *** investigate this behavior by monitoring morphological changes at the cell interface using synchrotron X-ray *** with PPTU binders exhibit remarkable rate performance,desired reversibility,and excellent cycling stability even under stringent bending and twisting *** work represents promising progress in functional polymer binder development for li-s batteries.

关键词： li-s batteries Bifunctional binders Electrode conductivity shuttle effect

The “Panchatantra” Narrative structure and the Writing of Indian Women’s Dilemma in suraj Ka satvan Ghoda

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Journal of literature and Art studies 2024年第7期14卷 567-575页

作者： CEN rui school of African studies Beijing Foreign Studies UniversityBeijingChina

Dharamvir Bharati’s suraj Ka satvan Ghoda connects the text with the social reality,through the multiple narrative perspectives of the“Panchatantra”Narrative structure and the love stories,and narrates the survival and spiritual dilemma of Indian women in the transformation of India’s *** novel depicts in both content and form the plight of Indian women’s physical and spiritual dependence under the traditional concepts of arranged marriages,caste marriages,dowry system and patriarchal will,and shows the process of women’s body and self-consciousness gradually moving from vitality to extinction.

关键词： suraj Ka satvan Ghoda Dharamvir Bharati The“Panchatantra”narrative structure dilemma writing

Microstructure evolution and mechanical properties of brazing joint for ultra-thin-walled Inconel 718 considering grain size effect and brazing temperature

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Chinese Journal of Aeronautics 2024年第2期37卷 541-556页

作者： rui ZhAO Yueshuai sONG hui KANG Min WAN school of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Jiangxi research Institute of Beihang University Jiangxi 330000China

The systematic investigation of the mechanical properties and microstructure evolution process of ultra-thin-walled Inconel 718 capillary brazing joints is of great significance because of the exceptionally high demands on its *** achieve this objective,this study investigates the impact of three distinct brazing temperatures and five typical grain sizes on the brazed joints’mechanical properties and microstructure evolution *** evolution analysis was conducted based on Electron Back scatter Diffraction(EBsD),scanning Electron Microscopy(sEM),X-ray Diffraction(XRD),high-resolution Transmission Electron Microscopy(hRTEM),and Focused Ion Beam(FIB).Besides,the mechanical properties and fracture behavior were studied based on the uniaxial tension tests and in-situ tension *** findings reveal that the brazing joint’s strength is higher for the fine-grain capillary than the coarse-grain one,primarily due to the formation of a dense branch structure composed of G-phase in the brazing *** effects of grain size,such as pinning and splitting,are amplified at higher brazing ***,micro-cracks initiate around brittle intermetallic compounds and propagate through the eutectic zone,leading to a cleavage fracture *** fracture stress of fine-grain specimens is higher than that of coarse-grain due to the complex micro-crack ***,this study contributes significantly to the literature by highlighting the crucial impact of grain size on the brazing properties of ultra-thin-walled Inconel 718 structures.

关键词： EYWORDs Ultra-thin-walled structure Brazing Inconel 718 Grain size effect Brazing temperature

China's Role in Global Unity

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Beijing review 2024年第27期67卷 22-23页

作者： rui lourido Observatory for China

During my frequent trips to China,I have observed a widespread positive outlook and hope for the future among the Chinese population,driven by their steadily improving living *** stands in stark contrast to the pessimism about the present and future among many Europeans and Americans during a major shift in the global *** particular,young people in Europe and the United states feel that their future prospects and living standards will decline compared to those of their parents.

关键词： Unity trips Global

The Geology, Fluid Inclusions, and O-s Isotopes of the Mibei Gold Deposit, hunan Province, southern China

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Acta Geologica sinica(English Edition) 2024年第4期98卷 992-1006页

作者： XUE Wenhao lIANG Yayun lI Xiaofeng lI Mingyi XIE Wenbo PENG Xue XIA rui hE hongsheng XIAO Jincheng school of Civil and resource Engineering University of Science and Technology BeijingBeijing 100083China Geophysical and Geochemical survey Institute of hunan Changsha 410116China New Geological Energy Exploration and Development Engineering Technology research Center of hunan Changsha 410116China state Key laboratory of Geological Processes and Mineral resources China University of Geosciences(Beijing)Beijing 100083China Comprehensive survey Command Center for Natural resources China Geological SurveyBeijing 100055China

The Mibei gold deposit,located in the southwestern part of the Xuefengshan uplift zone,the middle section of the Jiangnan orogenic belt in southern China,has estimated gold resources of approximately seven *** deposit is primarily a quartz vein-type gold deposit,with ore bodies occurring mainly within Neoproterozoic *** main metallic minerals in the ore are pyrite,chalcopyrite,and *** this study,the petrography and microthermometry of ore-forming fluid inclusions,oxygen isotopes of gold-bearing quartz,and sulfur isotopes of goldbearing sulfides and arsenopyrite were *** types of fluid inclusions were identified:type Ⅰa three-phase inclusions comprising vapor and two phases of liquids(V_(CO_(2))+l_(CO_(2))+l_(h2O)),type Ⅰb two-phase liquids(l_(CO_(2))+l_(h2O)),typeⅡ two-phase vapor-rich inclusions(V/V+l> 50%),and type Ⅲ pure liquid *** Ⅰ inclusions were heated uniformly to the liquid phase,type Ⅱ inclusions were heated uniformly to the gas phase,and type Ⅲ inclusions were heated without *** general,the temperature range of homogenization to liquid phase of fluid inclusions in the Mibei gold deposit is 204-227℃.The salinity of the inclusion ranges from 4.6 to 12.2 wt% NaCl *** δ~(18)O_(sMOW) of gold-bearing quartz varies from 16.9‰ to 17.5‰.The δ~(18)O_(h2O) of gold-bearing quartz are varied from 6.5‰ to 7.5‰.The δ~(34)s values of gold-bearing pyrite range from 1.7‰ to 6.8‰.The δ~(34)s values of gold-bearing arsenopy rite range from 5.6%o to 5.9‰.Theδ~(34)s values of pyrite from wall rocks slate range from 6.4‰ to 11.6‰.This evidence implies that the ore-forming fluids of the Mibei gold deposit originated from magmatic-hydrothermal processes,mixing with minor s from the surrounding *** with the evolution of the Jiangnan orogenic belt,due to the magmatic and tectonic activities of the Xuefengshan uplift during the Caledonian period,the fault seal mechanism controlled the ore-forming p

关键词： ore-forming fluid ore genesis Mibei gold deposit Xuefengshan uplift zone Jiangnan orogenic belt

Bimagnetic metal constructed core-shell structure of fe@Co nanowires for multi-band microwave absorption

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Progress in Natural science:Materials International 2024年第02期34卷 354-361页

作者： Ping-an Yang rui Cai haibo Ruan Nanqing Zhang Xin huang rui li Yuxin Zhang Yi lu Zhihao Zhou school of Automation Chongqing University of Posts and Telecommunications Chongqing Key laboratory of Materials surface & Interface science Chongqing University of Arts and Sciences College of Engineering and Technology Zunyi Normal College College of Material science and Engineering Chongqing University

Controlled fabrication of materials by surface modification techniques has been a hot research topic. In this paper,one-dimensional(1D) core-shell structure fe@Co nanowires(NWs) were successfully prepared by anchoring 0-dimensional(0D) Co nanoparticles on 1D fe NWs based on the in situ reduction method. The electromagnetic parameters of the specimens at a filler mass fraction of 25 wt% were tested and the microwave loss mechanism was deeply analyzed. Binary magnetic metals in a core-shell structure have excellent multi-band microwave absorption capability(s-band, X-band and Ku-band). This is due to the heterogeneous interface and magnetic coupling effects tuning the dielectric and magnetic loss. This study offers a workable plan for creating effective multi-band magnetic metal-based microwave absorbers.

关键词： Core-shell structure Interface Magnetic coupling Microwave absorption One-dimensional nanowires