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molecular investigation into the transformation of recalcitrant dissolved organic sulfur in refinery sour water during stripping process

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Petroleum Science 2024年第3期21卷 2112-2119页

作者： yu-Guo Li Chen He Chun-Mao Chen Fan liu Quan Shi State key laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China State key laboratory of Coal Mining and Clean Utilization Beijing 100013China Petrochina Ningxia Petrochemical Company Yinchuan 750021NingxiaChina

Refinery sour water primarily originates from the tops of towers in various units and coker condensate,and cannot be discharged directly to a wastewater treatment plant due to high levels of chemical oxygen demand(COD)and organic sulfur *** after the recovery of H_(2)S from the sour water by the stripping process,the effluent still contains a high concentration of dissolved organic sulfur(DOS),which can have a huge bad *** chemical composition of dissolved organic matter(DOM)in refinery wastewater has been extensively studied,the investigation of recalcitrant DOS from sour waters remains *** the present study,chemical composition of sour water DOMs(especially DOS)was investigated using fluorescence spectroscopy(excitation-emission matrix,EEM)and mass spectrometry,including gas chromatography-mass spectrometry(GC-MS)and high-resolution Orbitrap *** GC-MS and EEM results showed that volatile and low-aromaticity compounds were effectively removed during the stripping process,while compounds with high hydrophilicity and humification degree were found to be more *** Orbitrap MS results showed that weak-polar oxygenated sulfur compounds were easier to be removed than oxygenated ***,the effluent still contained significant amounts of sulfur-containing compounds with multiple sulfur atoms,particularly in the form of highly unsaturated and aromatic *** Orbitrap MS/MS results of CHOS-containing compounds from the effluent indicate that the sulfur atoms may exist as sulfonates,disulfide bonds,*** the composition and structure of sour water DOS is crucial for the development of effective treatment processes that can target polysulfide compounds and minimize their impact on the environment.

关键词： molecular transformation Dissolved organic sulfur Stripping process Refinery sourwater Orbitrap MS

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Construction and Optical-Electrical Properties of Inorganic/organic Hybrid Nanostructures

Construction and Optical-Electrical Properties of Inorganic/...

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第六届全国物理无机化学会议

作者： Huibiao liu,Yongjun Li,yuliang Li CAS key laboratory of organic solids,beijing national laboratory for molecular sciences (BNLMS),institute of chemistry,chinese academy of sciences,beijing 100190,P.R.china

＜正＞We propose the matching principle of energy level and structure between inorganic and organic conjugated molecules to design and synthesize a series of ordered nanoscale arrays of semiconductor molecular hybrid structures by self-assembly,vapor-solid phase reaction and self-organizing *** process and mechanism

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Construction and Optical-Electrical Properties of Inorganic/organic Hybrid Nanostructures

Construction and Optical-Electrical Properties of Inorganic/...

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中国化学会第六届全国结构化学学术会议

作者： Huibiao liu~*,Yongjun Li,yuliang Li CAS key laboratory of organic solids,beijing national laboratory for molecular sciences (BNLMS),institute of chemistry,chinese academy of sciences,beijing 100190,P.R. china

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Electric-Induced Cycloelimination for Simulating Structural Plasticity in organic Nociceptors

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CCS chemistry 2024年第6期6卷 1466-1476页

作者： Zhiheng Zhu Kai liu Haojie Huang Yangshuang Bian Mingcong Qin Chengyu Wang Wei Wen Mingliang Zhu Wenkang Shi Yanwei liu Zhiyuan Zhao Huijuan Yan Hanlin Wang yunqi liu yunlong Guo beijing national laboratory for molecular sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 University of chinese academy of sciences Beijing 100190

Continuous lifelong acquisition,updating,and finetuning of knowledge and skills is of crucial significance for the survival of ***,current neuromorphic devices exhibit obvious catastrophic forgetting when restimulated by new *** remains a challenge for neuromorphic devices and artificial intelligence to achieve continuous ***,we propose an electric-induced cycloelimination strategy to realize an organic transistor nociceptor that can simulate synaptic and structural *** system benefits from the ring-opening characteristics of cross-linked poly(vinyl cinnamate)under a strong pulse voltage,during which new energy-level trap states are *** prepared organic transistor nociceptors exhibit both structural and synaptic *** simulate the characteristics of human nociceptors,including threshold,relaxation,sensitization,and maladaptation *** the first time,we have simulated and explored the structural plasticity behavior in organisms based on electronic *** remarkably,the transistor nociceptors realize the reinput of information without forgetting the initial informa *** strategy developed for the preparation of organic transistor nociceptors provides insights for addressing the catastrophic forgetting in the lifelong learning of intelligent neuromorphic devices.

关键词： electric-induced cycloelimination structural plasticity organic nociceptors organic transistors metaplasticity

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Suppression of Phase and Amplitude Damping Decoherence in a Three-Level Atom in A-Configuration Using Bang-Bang Controls

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Communications in Theoretical Physics 2007年第7期48卷 71-74页

作者： WANG Yan-Hui liu Xiao-Shu LONG gui-Lu1 key laboratory for Atomic and molecular Nanosciences and Department of Physics,Tsinghua University,beijing 100084,china2 Tsinghua national laboratory for Information Science and Technology,Tsinghua University,beijing 100084,china key laboratory for Atomic and molecular Nanosciences and Department of Physics Tsinghua University Beijing 100084 China Tsinghua national laboratory for Information Science and Technology Tsinghua University Beijing 100084 China

In this paper,we present decoupling bang-bang operations for the suppression of general decoherence,bothamplitude and phase damping,in a three-level system in *** give a program to design a sequence ofperiodic twinbor... 详细信息

关键词： bang-bang operation general decoherence three-level system

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Evolution of template-assisted two-dimensional porphyrin chiral grating structure by directed self-assembly using chiral second harmonic generation microscopy

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chinese Chemical Letters 2024年第10期35卷 196-200页

作者： Changhui yu Peng Shang Huihui Hu yuening Zhang Xujin Qin Linyu Han Caihe liu Xiaohan liu Minghua liu yuan Guo Zhen Zhang beijing national laboratory for molecular sciences State Key Laboratory of Molecular Reaction Dynamics Institute of Chemistry Chinese Academy of Sciences University of chinese academy of sciences beijing national laboratory for molecular Science CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences

Directed self-assembly has been used to create micro-nano scale patterns, including chiral periodic structures of organic molecules, for potential applications in optics, photonics, metamaterials, and medical and sensing technologies. This study presents a straightforward approach for fabricating large-scale chiral grating porphyrin assemblies through template-assisted techniques. The solution of tetrakis(4-sulfonatophenyl)porphyrin(TPPS) was induced by chiral amino acids(L/D-arginine and L/D-serine) to selfassemble into highly ordered chiral grating structures with the assistance of sodium dodecyl sulfate(SDS).The structures show precise line widths(5.5 μm) and gaps(18 μm). Using in situ optical microscopy and second harmonic generation(SHG) microscopy, the chiral characteristics and dynamic evolution of the template-assisted self-assembly are investigated. It is found that the chirality of amino acids induced TPPS self-assembled into chiral structures and the liquid contraction interface significantly enhanced the chirality of the assemblies. This study is significant for understanding the mechanism of chiral evolution and designing novel micro-nano materials with predetermined chiral properties.

关键词： Chiral assembly Chiral evolution Micro-nano structure Porphyrin Second harmonic generation microscopy Template-assisted self-assembly

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Fabrication and Propertiesof Inorganic/organic Hybrid Nanomaterials

Fabrication and Propertiesof Inorganic/Organic Hybrid Nanoma...

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11th Conference on Solid State chemistry and Inorganic Synthesis Joint with 2th Dalton Transactions International Symposium

作者： Huibiao liu,Yongjun Li,yuliang Li~* CAS key laboratory of organic solids.beijing national laboratory for molecular sciences(BNLMS),institute of chemistry.chinese academy of sciences,beijing 100190,P.R. china.

Low dimension organic/inorganic hybrids of nanostructures are materials that combination of functional organic molecules and inorganic molecules to produce new class

关键词： Fabrication and Propertiesof Inorganic/organic Hybrid Nanomaterials Hybrid

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Fabrication of Large-area Hybrid Nanowires Arrays as Novel Field Emitters

Fabrication of Large-area Hybrid Nanowires Arrays as Novel F...

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全国第八届有机固体电子过程暨华人有机光电功能材料学术讨论会

作者： Huibiao liu,Yongjun Li,yuliang Li~* (CAS key laboratory of organic Solid,beijing national laboratory for molecular sciences(BNLMS), institute of chemistry,chinese academy of sciences,beijing 1000190)

A hybrid nanomaterial composed of ZnO nanoparticles(NPs) and CuTCNQ(copper 7,7,8,8-tetracy anoquinodimethane) nanowires(NWs) was successfully fabricated in a feasible solution *** field emission properties of the hybr...

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Identification of marine natural gases with different origin sources

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Science china Earth sciences 2008年第S1期51卷 148-164页

作者： WANG yunPeng 1 ,ZHAO ChangYi 2 ,WANG Zhaoyun 2 ,WANG HongJun 2 ,TIAN Jin 1 ,ZOU YanRong 1 &liu JinZhong1 1State key laboratory of organic Geochemistry,Guangzhou institute of Geochemistry,chinese academy of sciences,Guangzhou 510640,china 2institute of Geology,Research institute of Petroleum Exploration and Development,Petrochina,beijing 100083,china institute of Geology Research Institute of Petroleum Exploration and Development

Kinetic experiments of gas generation for typical samples of marine gas precursors including low-maturity kerogen,residual kerogen and oil as well as dispersed liquid hydrocarbon(DLH)in source rocks were performed by closed system,and the evolution trends of molecular and isotopic compositions of natural gases from different precursors against the maturity(R0%)at laboratory conditions were *** diagrams of gas origin were calibrated by using the experimental data.A diagram based on the ratio of normal and isomerous butane and pentane(i/nC4-i/nC5)was proposed and used to identify the origins of the typical marine natural gases in the Sichuan Basin and the Tarim Basin, *** the maturities of natural gases were estimated by using the statistical relationships between the gaseous molecular carbon isotopic data and maturities(δ13C-R 0 %)with different *** results indicate that the molecular and isotopic compositions of simulated gases from different precursors are different from each *** example,the dryness index of the oil-cracking gas is the lowest;the dryness indices of gases from DLH and kerogen in closed system are almost the same;and the dryness index of gases from residual kerogen is extremely high,indicating that the kerogen gases are very dry;the contents of non-hydrocarbon gases in kerogen-cracking gases are far higher than those in oil-cracking and DLH-cracking *** molecular carbon isotopes of oil-cracking gases are the lightest,those of kerogen in closed system and GLH-cracking gases are the second lightest,and those of cracking gases from residual kerogen are the *** calibration results indicate that the diagrams of ln(C1/C2)-ln(C2/C3)andδ13C2-δ13C3-ln(C2/C3)can discriminate primary and secondary cracking gases,but cannot be used to identify gas origin sources,while the diagram of i/nC4-i/nC5 can differentiate the gases from different *** application results of these diagrams show that gas mixtures ext

关键词： marine organic matter gas origin sources kerogen oil-cracking gas origin identification carbon isotope

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The Design and Self-assembly of Anion Receptors Based on 1,2,3-Triazole

The Design and Self-assembly of Anion Receptors Based on 1,2...

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中国化学会第六届全国结构化学学术会议

作者： Yong-Jun Li~1,Hui-Biao liu~1,yu-Liang Li~(1,*) 1 CAS key laboratory of organic Solid,beijing national laboratory for molecular sciences (BNLMS),institute of chemistry,chinese academy of sciences,beijing 100190,P.R. china.

＜正＞Anions play important chemical and biological roles,and the supramolecular chemistry involving them has grown *** developments range from fundamental studies on noncovalent bonding to the design of anion receptors and anion assistance to asymmetric *** triazole was distinguished from other ring systems by the relief of steric strain provided by the sp2 nitrogen atoms,which is an excellent unit for the construction of *** collective effect of the preorganized shape,the ideal size of the inner

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