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Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun Yi Yao Liu Yi Huang key laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology key laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

oil geochemistry derived from the Qinjiatun–Qikeshu oilfields:insight from light hydrocarbons

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Acta Geochimica 2018年第3期37卷 433-440页

作者： Jin Li Ting Kong Min Zhang key laboratory of exploration technology for oil and gas research (Yangtze University) Ministry of Education College of Resources and Environment Yangtze University research Institute of Petroleum exploration and Development (Langfang Branch) PetroChina The key laboratory of gas Formation and Development Petrochina

A suite of 27 oils from the Qinjiatun–Qikeshu oilfields in the Lishu Fault Depression of the Songliao Basin was analyzed using whole oil gas *** combination with the relative distribution of C27, C28,and C29 regular steranes, detailed geochemical analyses of light hydrocarbons in oil samples revealed crude oils characterized by the dual input of lower aquatic organisms and higher terrestrial plants. Several light hydrocarbon indicators suggest that the liquid hydrocarbons have maturities equivalent to vitrinite reflectances of around0.78%–0.93%. This is consistent with the maturity determination of steranes C2920 S/(20 S ? 20 R) and C29 aab/(aaa ? abb). Crude oils derived from the two distinct oilfields likely both have source rocks deposited in a lacustrine environment based on light hydrocarbon parameters and on higher molecular weight hydrocarbon parameters. The results show that light hydrocarbon data in crude oils can provide important information for understanding the geochemical characteristics of the Qinjiatun–Qikeshu oils during geologic evolution.

关键词： Light hydrocarbons Crude oil Lishu FaultDepression Geochemistry characteristic

Novel C15 sesquiterpanes and their origin in different crude oils from the Pearl River Mouth Basin of China

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Science China Earth Sciences 2016年第8期59卷 1622-1632页

作者： BAO JianPing CHEN XiWen ZHU CuiShan key laboratory of oil&gas Resource and exploration technology Geochemistry DepartmentYangtze UniversityWuhan 430100China

In the saturate fractions of crude oils from the Zhu1 and Zhu2 depressions of the Pearl River Mouth Basin,two novel C_(15) sesquiterpanes have been detected except for drimanes and rearranged *** comparison with spectra and retention times in previous studies,they have been identified as 2,2,4α,7,8-pentamethyl-trans-decalin and 2,2,4α,7,8-pentamethyl-cis-decalin,respectively,which are related to the D/Eringsof18α(H)-and18β(H)-***15sesquiterpanesarerelativelyabundantincondensateoilsthathavehighPr/PhratiosandarerichinterrigenoustriterpanessuchasoleananeandbicadinanesfromtheZhu2depression,butevidentlylowinlacustrineoilsthathavelowPr/***15sesquiterpanescouldberelatedtoterrigenousorganicmatterinorigina***,thereexistcompletelydifferentcorrelationsbetweentherelativeabundancesofdifferentC15sesquiterpanesthathavedifferentsourcesandthePr/Phratio,***,thenovelC15sesquiterpanesandcadinanethatindicateterrigenousinputarepositivelycorrelatedwiththePr/Phratio,butdrimanesandrearrangeddrimaneshavingmicrobialoriginarenegativelycorrelatedwiththePr/******15sesquiterpanesaremuchmoreabundantincarbonaceousmudstone(Pr/Ph=7.39)thanindarkmudstone(Pr/Ph=2.19)fromtheEnpingformation,***,theyarenotcommoninsapropeliclacustrinesourcerocks(Pr/Ph=2.29)***ition,butanoxicenvironmentduringdepositionanddiagenesismaybeaprerequisitefortheformationofnovelC15sesquiterpanes.

关键词： Sesquiterpanes Drimanes Cadinane Oleanane Bicadinanes Crude oils Pearl River Mouth Basin

Hydrocarbon Accumulation Mechanism of Sinian Reservoir in Anpingdian-Gaoshiti Structure, Middle Sichuan Basin

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Journal of China University of Geosciences 2008年第6期19卷 685-699页

作者：徐国盛毛敏袁海锋刘树根王国芝周存俭 State key laboratory of oil and gas Reservoir Geology and exploration Chengdu University of Technology

The Sinian reservior in Anpingdian （安平店）-Gaoshiti （高石梯） structure, Middle Sichuan （四川） basin, is of great importance to prospect for oil and gas. This article dissects the hydrocarbon accumulation mechanism of this area on the basis of comprehensive methods of organic geochemistry, fluid inclusion, modeling of hydrocarbon generation and expulsion from source rocks, and by combining structure evolutions and analyzing the key geologic features of hydrocarbon origin and trap. According to the fluid inclusion homogenization temperature analysis, there exist at least three stages of fluid charging in the Sinian reservoir. From Middle-Late Jurassic to Early Cretaceous, oil cracked to gas gradually owing to high temperature at 200-220℃. The Sinian gas pool was mainly formed at the stage when natural gas in trap was released from water and paleo-gas pools were being adjusted. It was a process in which natural gas dissipated, transferred, and redistributed, and which resulted in the present remnant gas pool in Anpindian-Gaositi tectonic belt. The authors resumed such an evolution process of Sinian reservoir as from paleo-oil pools to paleo-gas pools, and till today＇s adjusted and reconstructed gas pools.

关键词： Sinian accumulation mechanism fluid geochemistry Anpingdian-Gaoshiti structure Middle Sichuan basin

A study of hydrate plug formation in a subsea natural gas pipeline using a novel high-pressure flow loop

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Petroleum Science 2013年第1期10卷 97-105页

作者： Li Wenqing Gong Jing Lü Xiaofang Zhao Jiankui Feng Yaorong Yu Da Beijing key laboratory of Urban oil and gas Distribution technology China University of Petroleum China National oil and gas exploration and Development Corporation CNPC Tubular Goods research Institute

The natural gas pipeline from Platform QKI8-1 in the southwest of Bohai Bay to the onshore processing facility is a subsea wet gas pipeline exposed to high pressure and low temperature for a long distance. Blockages in the pipeline occur occasionally. To maintain the natural gas flow in the pipeline, we proposed a method for analyzing blockages and ascribed them to the hydrate formation and agglomeration. A new high-pressure flow loop was developed to investigate hydrate plug formation and hydrate particle size, using a mixture of diesel oil, water, and natural gas as experimental fluids. The influences of pressure and initial flow rate were also studied. Experimental results indicated that when the flow rate was below 850 kg/h, gas hydrates would form and then plug the pipeline, even at a low water content （10%） of a water/oil emulsion. Furthermore, some practical suggestions were made for daily management of the subsea pipeline.

关键词： Natural gas hydrate blockage flow assurance high-pressure loop water cut flow rate

Geochemical Characteristics of C_5–C_7 Light Hydrocarbons in gas Hydrates from the Permafrost Region of Qilian Mountains

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Acta Geologica Sinica(English Edition) 2016年第6期90卷 2283-2284页

作者： ZHANG Min KONG Ting HE Yu key laboratory of exploration technology for oil & gas research Yangtze UniversityMinistry of Education College of Resources and Environment Yangtze University

As an important part of gas hydrates, light hydrocarbons （LHs）, especially C5 to C7 hydrocarbons with various monomer compounds, provide a wide variety of geological and geochemical information, which have received ... 详细信息

关键词： Geochemical Characteristics of C5 C7 Light Hydrocarbons in gas Hydrates from the Permafrost Region of Qilian Mountains

A Case Study on the Occurrence and Mobility of the Shale oil from the Muli Coalfield,Qilian Mountain

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Acta Geologica Sinica(English Edition) 2016年第6期90卷 2267-2268页

作者： CHEN Xiaohui ZHANG Min key laboratory of exploration technology for oil & gas research Yangtze UniversityMinistry of Education College of Resources and Environment Yangtze University

Shale oil occurs in free state （including condensate state）, adsorption state （adsorbed on kerogen and mineral particles） and dissolved state （dissolved in natural gas, residual water, etc.） in shales and adjacent layers. The characterization of the occurrence of different hydrocarbons in shale oil, especially the quantitative separation of free hydrocarbons （mobile oil）, has been the current focus of shale oil research. Taken the shale oil from the Muli coalfield in Qilian Mountain as an example, this work extracted shale samples with organic solvents of different polarity to obtain different occurrence states of hydrocarbons in the oil-bearing shale and to reveal the compositional differences of the hydrocarbons. The result may provide new geochemical information for the occurrence and mobility of shale oil.

关键词： than EOM A Case Study on the Occurrence and Mobility of the Shale oil from the Muli Coalfield,Qilian Mountain

Characteristics and quantitative of negative ion in salt aqueous solution by Raman spectroscopy at 170℃

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Science China Earth Sciences 2006年第2期49卷 124-132页

作者： ZHANG Nai ZHANG Dajiang ZHANG Shuichang ZHANG Dijia research Institute of Petroleum exploration and Department Key Laboratory of Petroleum Geochemistry and Key Laboratory for Oil and Gas Reservoirs CNPC Beijing 100083 China

The results from Raman spectroscopy analysis of salt aqueous solutions at?170℃demonstrate that for those clearly sharp iron peaks whose Raman wavenumber is close to each other such as NO_(3)and CO^(2)_(3),their original shape could be restorable by the stripping technique,and that ice’s sharp characteristic peak(3090―3109 cm^(-1))is steady,while the spectrum band of the complex compound(nCl―[H^(+)―OH]_(n))chlorine ion combined chemically with water molecule is 3401―3413 cm^(-1).On the other hand,the research shows that the higher the negative iron concen-tration,the stronger its Raman characteristic peak intensity and the smaller the ice’*** on the number of data and theoretical work,the strong correlation of the molar concentration of negative ion with the S_(i)/S_(H_(2)O)band area ratio is built ***,the developed Raman method is successfully used in the component analysis of the field fluid inclusions from Silurian sandstone in Tarim basin.

关键词： Raman negative ion complex compound nCl--[H^(+)-OH-]_(n) concentration Tarim basin.

Identification of the four rearranged hopane series in geological bodies and their geochemical significances

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Chinese Journal Of Geochemistry 2015年第4期34卷 550-557页

作者： Honglei Li Lian Jiang Xiaohui Chen Min Zhang key laboratory of exploration technology for oil and gas research (Yangtze University) Ministry of Education School of Earth Environment and Water Resources Yangtze University

Saturated fractions in a total of 23 oil samples and hydrocarbon source rocks from the Songliao, Tarim,and Ordos Basins have been analyzed by GC–MS and GC–MS–MS. According to the relative retention, mass spectral characteristics, and comparison with existing literature, a complete carbon number distribution ranging from C27 to C35(without C28) in the 17a(H)-diahopane series and early-eluting rearranged hopane series is identified. Compounds in the 18a(H)-neohopane series(Ts and C29Ts) and21-methyl-28-nor-hopane series(29Nsp and 30Nsp) are also noted. These four series of rearranged hopanes seem to occur in both brackish-saline lacustrine and coal measure environments. However, the coal measure and swamp environments being under an oxic condition, compared with brackish-saline lacustrines, are presumably more helpful to the formation of 30 E. Diversity in the content and distribution patterns indicate that rearranged hopanes could serve as good indicators of organic facies, depositional environment and maturity in petroleum geology.

关键词：重排藿烷地球化学意义地质体识别鄂尔多斯盆地沼泽环境类化合物塔里木盆地