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Tuning the interfacial reaction environment via pH-dependent and induced ions to understand C–N bonds coupling performance in NO3- integrated CO2 reduction to carbon and nitrogen compounds over dual Cu-based N-doped carbon catalyst

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Journal of Energy Chemistry 2025年第1期100卷 273-285页

作者： Tianhang Zhou Chen Shen Zhenghao Wu Xingying Lan Yi Xiao College of Carbon Neutrality Future Technology State Key Laboratory of Heavy Oil Processing China University of Petroleum (Beijing) institute of Materials Science TU Darmstadt Department of Chemistry Xi'an Jiaotong-Liverpool University Department of Mechanical and Mechatronics Engineering and Waterloo Institute of Nanotechnology University of Waterloo Waterloo

Dual atomic catalysts （DAC）,particularly copper （Cu2）-based nitrogen （N） doped graphene,show great potential to effectively convert CO2and nitrate （NO3-） into important industrial chemicals such as ethylene,glycol,acetamide,and urea through an efficient catalytical process that involves C–C and C–N ***,the origin of the coupling activity remained unclear,which substantially hinders the rational design of Cu-based catalysts for the N-integrated CO2reduction reaction （CO2RR）.To address this challenge,this work performed advanced density functional theory calculations incorporating explicit solvation based on a Cu2-based N-doped carbon (Cu2N6C10) catalyst for *** calculations are aimed to gain insight into the reaction mechanisms for the synthesis of ethylene,acetamide,and urea via coupling in the interfacial reaction *** to the sluggishness of CO2,the formation of a solvation electric layer by anions （F-,Cl-,Br-,and I-） and cations (Na+,Mg2+,K+,and Ca2+) leads to electron transfer towards the Cu *** process significantly accelerates the reduction of *** results reveal that*CO intermediates play a pivotal role in N-integrated ***,the Cu2-based N-doped carbon catalyst examined in this study has demonstrated the most potential for C–N coupling to *** findings reveal that through the process of a condensation reaction between*CO and NH2OH for urea synthesis,*NO3-is reduced to*NH3,and*CO2to*CCO at dual Cu atom *** dual-site reduction facilitates the synthesis of acetamide through a nucleophilic reaction between NH3and the ketene ***,we found that the I-and Mg2+ions,influenced by pH,were highly effective for acetamide and ammonia synthesis,except when F-and Ca2+were ***,the mechanisms of C–N bond formation were investigated via ab-initio molecular dynamics simulations,and we found that adjusting the micro-environment can change the dominant side reaction,shift

关键词： pH-dependent micro-environments C–N coupling Dual Cu-based nitrogen carbon catalysts Explicit solvation model Ion stabilizer AIMD

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Effect of microparticle properties on erosion in solid-steam mixtures

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Chinese Science Bulletin 2011年第9期56卷 933-937页

作者： XU WanLi WANG JiaDao ZHAO Wei CHEN DaRong beijing petroleum oil and lubricant institute Beijing 102300 China State Key Laboratory of Tribology Tsmghua University Beijing 100084 China

Based on a custom-built experimental apparatus, irregular microparticles of different sizes and microparticles of the same size but of different shape were added to wet steam, and erosion experiments were performed on polished medium carbon steel specimens. After the experiments, the eroded surfaces were analyzed by scanning electron microscopy and the degree of damage was evaluated by area loss. The results indicated that microparticle size significantly affects the degree of erosion damage. With an increase in size, variations in the method of damage mainly cause different degrees of damage on an eroded surface. Microparticle shape hardly affects the number of craters. Compared with spherical microparticles, irregular microparticles cause indentations more easily and result in more severe abrasion on the material’s surface.

关键词：固体微粒侵蚀实验湿蒸汽混合物扫描电子显微镜分析性能实验装置损害程度

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Development review and the prospect of oil shale in-situ catalysis conversion technology

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petroleum Science 2024年第2期21卷 1385-1395页

作者： Li Wang Chen-Hao Gao Rui-Ying Xiong Xiao-Jun Zhang Ji-Xiang Guo The Unconventional oil and Gas institute China University of Petroleum-BeijingBeijing102200China

As an unconventional resource, oil shale possesses abundant reserves and significant potential for industrial applications. The rational and efficient development of oil shale resources holds immense importance in reducing national energy demand. In-situ catalytic technology, characterized by its high efficiency, low pollution, and minimal energy consumption, represents a key direction for future oil shale development. This paper provides a comprehensive review of research progress in in-situ oil shale mining technology, oil shale pyrolysis catalysts, the pyrolysis mechanism of kerogen, and the compatibility of different heating processes and catalysts. Furthermore, the paper proposes future research directions and prospects for oil shale in-situ catalytic technology, including reservoir modification, highefficiency catalyst synthesis, injection processes, and high-efficiency heating technology. These insights serve as valuable technical references for the advancement of oil shale in-situ catalytic technology.

关键词： oil shale In-situ catalytic technology Pyrolysis catalyst Kerogen pyrolysis mechanism

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Conformance control by a microgel in a multi-layered heterogeneous reservoir during CO_(2) enhanced oil recovery process

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Chinese Journal of Chemical Engineering 2022年第3期35卷 324-334页

作者： Zheyu Liu Jian Zhang Xianjie Li Chunming Xu Xin Chen Bo Zhang Guang Zhao Han Zhang Yiqiang Li State Key Laboratory of Heavy oil Processing China University of Petroleum(Beijing)Beijing 102249China College of petroleum Engineering China University of Petroleum(Beijing)Beijing 102249China China National Offshore oil Corporation Research institute CNOOCBeijing 100028China School of petroleum Engineering China University of Petroleum(East China)QingdaoShandong 266580China

Injecting CO_(2)into the underground for oil displacement and shortage is an important technique for carbon capture,utilization and storage(CCUS).One of the main problems during the CO_(2)injection is the channeling *** an effective method for the gas channeling plugging is a critical issue in the CO_(2)EOR *** this work,an acid-resistance microgel named dispersed particle gel(DPG)was characterized and its stability was tested in the CO_(2)*** microgel size selection strategies for the homogeneous and heterogeneous reservoirs were respectively investigated using the single core flooding and three parallel core flooding ***,the comparison of microgel alternate CO_(2)(MAC)injection and water alternate CO_(2)(WAC)injection in the dual core flooding experiments were presented for the investigation of the role of microgel on the conformance control in CO_(2)flooding *** results have shown that the microgel featured with ANH and CAN groups can keep its morphology after aging 7 days in the CO_(2)***,the small microgel with unobstructed migration and large microgel with good plugging efficiency for the high permeability zone were respectively featured with the higher recovery factor in homogeneous and heterogeneous conditions,which indicate they are preferred used for the oil displacement and conformance *** to WAC injection,MAC injection had a higher incremental recovery factor of 12.4%.It suggests the acid-resistance microgel would be a good candidate for the conformance control during CO_(2)flooding process.

关键词： Carbon dioxide Microgels Enhanced oil recovery Conformance control Porous media

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In situ modification of heavy oil catalyzed by nanosized metal-organic framework at mild temperature and its mechanism

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Chinese Journal of Chemical Engineering 2024年第3期67卷 166-173页

作者： Li Wang Ji-Xiang Guo Rui-Ying Xiong Chen-Hao Gao Xiao-Jun Zhang Dan Luo The Unconventional oil and Gas institute China University of Petroleum-BeijingBeijing 102200China beijing institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China

Two catalysts, nano-sized cobalt-metal-organic framework(Co-MOF) and nickel(Ni)-MOF, were successfully prepared by the modification method. Tetralin(C10H12) was used as the hydrogen donor for the catalytic cracking and hydrogenation modification study of the dehydrated crude oil from the Shengli oilfield. The optimal reaction conditions were determined through orthogonal experiments, and the components of the crude oil and modified oil samples were analyzed. The results revealed that the nanoMOF catalysts were successfully prepared and exhibited high catalytic activity. They could catalyze the cracking of large molecules in heavy oil at mild temperatures(oil at 50°C from 15761.9 m Pa.s to 1266.2 m Pa.s,with a viscosity reduction rate of 91.97%. The modification effect of Co-MOF was the next best, which could reduce the viscosity of heavy oil to 2500.1 m Pa.s with a viscosity reduction rate of 84.14%. Molecular dynamics simulations revealed a strong interaction force between the MOF surface and asphaltene molecules. In the process of heavy-oil catalytic hydrogenation, the nano-MOF catalyst exhibited high catalytic activity. On the one hand, the empty d orbitals outside the metal atoms in the catalyst could polarize the carbon atoms in the organic matter, accelerating the breaking of long chains. On the other hand, the metal atoms in the catalyst could bond with the carbon σ bonds, breaking the carbon-carbon bonds. This disrupted the structure of the recombined components in the crude oil, irreversibly reducing the viscosity of the heavy oil and improving its fluidity.

关键词： Nano-sized MOF petroleum Viscosity reduction Catalyst Nanomaterials

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Numerical simulation on the multiple planar fracture propagation with perforation plugging in horizontal wells

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petroleum Science 2022年第5期19卷 2253-2267页

作者： Ming-Hui Li Fu-Jian Zhou Bo Wang Xiao-Dong Hu Dao-Bing Wang Xiao-Ying Zhuang Shao-Bo Han Guo-Peng Huang State Key Laboratory of petroleum Resources and Prospecting China University of Petroleum-BeijingBeijing102249China Unconventional oil and Gas Research institute China University of Petroleum-BeijingBeijing102249China institute of Photonics Leibniz Universitat HannoverHannover30167Germany petroleum College China University of Petroleum-Beijing at KaramayXinjiang834000China beijing institute of Petrochemical Technology Beijing102240China

Intra-stage multi-cluster temporary plugging and diverting fracturing(ITPF)is one of the fastest-growing techniques to obtain uniform reservoir stimulation in shale gas ***,propagation geometries of multiple fractures during ITPF are not clear due that the existing numerical models cannot capture the effects of perforation *** this paper,a new three-dimensional FEM based on CZM was developed to investigate multiple planar fracture propagation considering perforation plugging during ***,the fluid pipe element and its subroutine were first developed to realize the flux partitioning before or after perforation *** results showed that the perforation plugging changed the original distribution of the number of perforations in each fracture,thus changing the flux partitioning after perforation plugging,which could eliminate the effect of stress interference between multiple fractures and promote a uniform fluid *** standard deviation of fluid distribution in the perforation plugging case was only 8.48%of that in the non-diversion ***,critical plugging parameters have been investigated ***,injecting more diverters will create a higher fluid pressure rise in the wellbore,which will increase the risk of wellbore *** considering pressure rise and fluid distribution,the number of diverters should be 50%of the total number of perforations(N_(pt)),whose standard deviation of fluid distribution of multiple fractures was lower than those in the cases of injecting 10%N_(pt),30%N_(pt)and 70%N_(pt).The diverters should be injected at an appropriate timing,i.e.40%or 50%of the total fracturing time(tft),whose standard deviation of the fluid distribution was only about 20%of standard deviations in the cases of injecting at20%tftor 70%tft.A single injection with all diverters can maintain high bottom-hole pressure for a longer period and promote a more uniform fluid distribu

关键词： Hydraulic fracturing Multi-cluster fracture propagation Perforation plugging Finite element method Fluid distribution

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Hydrocarbon generation and organic matter enrichment of limestone in a lacustrine mixed sedimentary environment: A case study of the Jurassic Da'anzhai member in the central Sichuan Basin, SW China

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petroleum Science 2023年第2期20卷 670-688页

作者： Qi-Lu Xu Bo Liu Xin-Min Song Qing-Ping Wang Xu-Dong Chen Yang Li Yu Zhang Shandong Provincial Key Laboratory of Deep oil and Gas China University of Petroleum(East China)QingdaoShandong266580China institute of oil and Gas Peking UniversityBeijing100871China PetroChina Research institute of petroleum Exploration and Development Beijing100083China petroleum Exploration and Production Research institute SINOPECBeijing100083China

The hydrocarbon generation effectiveness of lacustrine limestone has been gradually proven. The Da'anzhai Member limestone is the most important Jurassic oil-producing layer in the central Sichuan Basin, and the characteristics of limestone organic matter are often overlooked. 175 typical samples of different lithologies from 19 wells were systematically analyzed to determine hydrocarbon generation, controlling factors and formation models by analyses of organic matter, minerals, elements, isotopes and petrography. (1) Lacustrine paleoenvironments can be beneficial for the enrichment of organic matter in limestone. A favorable environment would be a quiet, low-energy zone in a warm and humid climate with an appropriate supply of terrestrial inputs. (2) Lacustrine limestone has a higher organic matter conversion rate, and a lower hydrocarbon generation threshold than argillaceous source rocks, and can be effective source rock. (3) The mud-bearing shell limestone from the forebeach to the lake slope is thick, with a relatively high abundance of organic matter, and its hydrocarbon generation is effective. This study can clarify the effectiveness and enrichment of the limestone organic matters in the study area, and contribute to an understanding of hydrocarbon generation for full-rock system in a lacustrine mixed sedimentary environment.

关键词： Lacustrine limestone Full-rock system Organic matter evaluation Paleoenvironments Lake evolution Terrestrial inputs

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Pore structure evolution of lacustrine organic-rich shale from the second member of the Kongdian formation in the Cangdong Sag,Bohai Bay Basin,China

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petroleum Science 2022年第2期19卷 459-471页

作者： Xiao-Ping Liu Ming Guan Zhi-Jun Jin Zhe Cao Jin Lai Lun-Ju Zheng Wen-Qi Li Biao Sun Shan-Yong Chen State Key Laboratory of petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China Research institute of petroleum Exploration and Development China National Petroleum CorporationBeijing100083China institute of Energy Peking UniversityBeijing100871China State Key Laboratory of Shale oil and Gas Enrichment Mechanisms and Effective Development Beijing100083China Sinopec petroleum Exploration and Production Research institute Beijing102206China Wuxi petroleum Geology institute Research Institute of Petroleum Exploration and DevelopmentSinopecWuxiJiangsu 214126China Petro China Dagang oil Field Company Tianjin300280China

Pyrolysis experiments were conducted on lacustrine organic-rich shale from Cangdong Sag in Bohai Bay Basin,China,to investigate the impact of hydrocarbon generation on shale pore structure *** evolution is found to control the transformation of organic matter,hydrocarbon products characteristics,and pore structure ***,pore volume and specific surface area increase with increasing *** low-mature stage,the retained oil content begins to increase,pore volumes show slight changes,and primary pores are occluded by the generated crude oil of high molecular weight and *** the oil-window stage,the retained oil content rapidly increases and reaches maximum,and pore volumes gradually increase with increasing thermal *** high mature stage,the retained oil content begins to decrease,and the pore volume increases considerably owing to the expulsion of liquid *** over mature stage,natural gas content significantly increases and kerogen transforms to *** organic pores are formed and the pore size gradually increases,resulting from the connection of organic pores caused the increasing thermal *** study lays a foundation for understanding variation of hydrocarbon products during the thermal evolution of lacustrine shales and its relationship with the evolution of shale reservoirs.

关键词： Lacustrine shale Pyrolysis Thermal maturity Pore structure evolution Hydrocarbon generation evolution

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Effect of mesopore spatial distribution of HZSM-5 catalyst on zinc state and product distribution in 1-hexene aromatization

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Chinese Journal of Chemical Engineering 2024年第3期67卷 16-26页

作者： Chenhao Wei Di Gao Guohao Zhang Liang Zhao Jinsen Gao Chunming Xu The State Key Lab of Heavy oil Processing China University of Petroleum(Beijing)Beijing 102249China SINOPEC Research institute of petroleum Processing Co. Ltd.Beijing 100083China

1-hexene aromatization is a promising technology to convert excess olefin in fluid catalytic cracking(FCC)gasoline to high-value benzene(B),toluene(T),and ***,the increasing market demand of xylene has put forward higher requirements for new generation of *** increasing xylene yield in 1-hexene aromatization,the effect of mesopore structure and spatial distribution on product distribution and Zn loading was *** with different mesopore spatial distribution were prepared by post-treatment of parent HZSM-5 zeolite,including NaOH treatment,tetra-propylammonium hydroxide(TPAOH)treatment,and *** was found the evenly distributed mesopore mainly prolongs the catalyst lifetime by enhancing diffusion properties but reduces the aromatics selectivity,as a result of damage of micropores close to the catalyst *** the selectivity of high-value xylene can be highly promoted when the mesopore is mainly distributed interior the ***,the state of loaded Zn was also affected by mesopores spatial *** the optimized catalyst,the xylene selectivity was enhanced by 12.4%compared with conventional Zn-loaded parent HZSM-5 catalyst at conversion over 99%.It was attributed to the synergy effect of mesopores spatial distribution and optimized acid *** work reveals the role of mesopores in different spatial positions of 1-hexene aromatization catalysts in the reaction process and the influence on metal distribution,as well as their synergistic effect two on the improvement of xylene selectivity,which can improve our understanding of catalyst pore structure and be helpful for the rational design of high-efficient catalyst.

关键词： 1-Hexene aromatization Alkali treatment Xylene selectivity Mesopores Zinc state

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A further investigation to mechanism of the electrorheological effect of waxy oils:Behaviors of charged particles under electric field

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petroleum Science 2023年第2期20卷 1247-1254页

作者： Yi-Wei Xie Hong-Ying Li Chao-Yue Zhang Yang Su Qian Huang Feng Jiang Chao-Hui Chen Shan-Peng Han Jin-Jun Zhang National Engineering Research Center of oil and Gas Pipeline Transportation Safety China University of PetroleumBeijing 102249China MOE Key Laboratory of petroleum Engineering China University of PetroleumBeijing 102249China beijing Key Laboratory of Urban oil&Gas Distribution Technology China University of PetroleumBeijing 102249China PetroChina Planning and Engineering institute Beijing 100083China

Exposing waxy oils to an electric field may significantly improve their cold *** previous study has shown that interfacial polarization,i.e.,charged particle accumulation on the wax particle surface,is the primary mechanism of the electrorheological behavior of waxy ***,the way that charged particles interact with wax particles under an electric field remains *** this study,we found no viscosity and impedance change for two waxy crude oils after their exposure to a high-voltage electric ***,the yield stresses were reduced *** thus proposed that the collision of colloidal particles such as resins and asphaltenes with the wax particles could be an essential mechanism that the wax particle structure was *** verify this hypothesis,a series of ad hoc experiments were carried out,i.e.,by performing electrorheological tests on model waxy oils containing additives removable under an electric field,including electrically-neutral colloidal particles(Fe3O4),charged colloidal particles(resins),and oil-soluble electrolyte(C22H14CoO4),respectively,and demonstrated that upon application of a high-voltage electric field,charged particles in a waxy oil may move and thus collide with wax particles,and consequently adhere to the wax particle *** particle collision results in damage to the wax particle network,and the electrostatic repulsion arising from the adhesion of the charged particle on the wax particle diminishes attraction between wax *** study clarifies the process of interfacial polarization.

关键词： Waxy oil Electrorheological effect Interfacial polarization Charged particle motion

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