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Self-separation ionic liquid catalyst for the highly effective conversion of H_(2)S by α,β-unsaturated carboxylate esters under mild conditions

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Green Energy & Environment 2024年第9期9卷 1440-1448页

作者： wenjie xiong Xiaomin Zhang Xingbang Hu Youting Wu Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China The Institute of Green Chemistry and Engineering School of Chemistry and Chemical EngineeringNanjing UniversitySuzhouJiangsu215163China

The deep-processing utility of pure hydrogen sulfide (H_(2)S) is a significant direction in natural gas chemical ***,a brand-new strategy of H_(2)S conversion by a,β-unsaturated carboxylate esters into thiols or thioethers using task-specific carboxylate ionic liquids (ILs) as catalyst has been developed,firstly accomplishing the phase separation of product and catalyst without introducing the third *** can be considered as a cascade reaction in which the product selectivity can be controlled by adjusting the molar ratio of H_(2)S to a,β-unsaturated carboxylate ***,the effects of ILs with different anions and cations,intermittent feeding operations,as well as pressure-time kinetic behaviors on cascade reaction were ***,the proposed interaction mechanism of H_(2)S conversion using butyl acrylate catalyzed by[Emim][Ac]was revealed by DFT-based theoretical *** approach enables the self-phase separation promotion of catalyst and product and achieves 99%quantitative conversion under mild conditions in the absence of solvent,making the entire process ecologically ***-efficiency reaction activity can still be maintained after ten cycles of the ***,the good results,combined with its simplicity of operation and the high recyclability of the catalyst,make this green method environmentally friendly and *** is anticipated that this self-separation method mediated by task-specific ILs will provide a feasible strategy for H_(2)S utilization,which will guide its application on an industrial scale.

关键词： Ionic liquid Cascade reaction Self-separation H_(2)S conversion Catalysis

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A novel proton-gradient-transfer acid complexes as an efficient and reusable catalyst for fatty acid esterification

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Green Energy & Environment 2022年第1期7卷 137-144页

作者： Xiaomin Zhang wenjie xiong Zengyu Yin Yongle Chen Youting Wu Xingbang Hu Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Yuxiu Postdoctoral Institute Nanjing UniversityNanjing210023China

In this work,a series of novel proton-gradient-transfer acid complexes(PGTACs)were *** physicochemical properties,including thermal stability,melting point,and Hammett acidity,were *** effects of catalyst loading,reaction temperature,and substrate expansion on the catalytic performance were systematically *** is found that the combination of bidentate N-heterocycle and H;SO;(1:2 M ratio)could form simultaneously N–H covalent bond and N…H hydrogen bond,which makes the PGTACs excellent catalysts integrate the advantages of strong acids(high catalytic activity)and ionic liquids(phase separation)in the esterification ***,these PGTACs can be reused by convenient phase separation without obvious diminution of catalytic *** is concluded that these PGTACs are potential alternative candidates for esterification reaction in the process of industrial catalysis.

关键词： Proton-gradient-transfer Hydrogen bond Catalysis Esterification Self-separation

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Efficient conversion of H_(2)S into mercaptan alcohol by tertiary-amine functionalized ionic liquids

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Chinese Journal of Chemical Engineering 2022年第10期50卷 197-204页

作者： wenjie xiong Mingzhen Shi Yan Lu Xiaomin Zhang Xingbang Hu Zhuoheng Tu Youting Wu Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Institute of Green Chemistry and Engineering Nanjing UniversitySuzhou 215163China

The resource utilization of hydrogen sulfide(H_(2)S)is of great significance in natural gas chemical *** herein have developed a novel method mediated in tertiary amine-functionalized ionic liquids(ILs)to convert H_(2)S into mercaptan alcohols with *** effect of ILs,substra te scope,and regeneration experiments have been *** is found that the conversion of 3-methyl-2-buten-1-ol by H_(2)S can reach 52%with a 50%(mol)catalyst loading of bis(2-dimethylaminoethyl)ether methoxyacetate within 12 hat 90℃.The reaction mechanism was speculated based on theoretical ***,a plausible reaction-separation-integrated strategy was further *** work reveals an effective insight into the capture and catalytic conversion of H_(2)S to high valuable mercaptan alcohol,which makes the utilization method of H_(2)S resource universal and has the potentiality for industrial application.

关键词： Ionic liquids Reaction Catalysis Hydrogen sulfide DFT calculation

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The Number of Failed Components in a Conditional Coherent Operating System

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Journal of Mathematical Research with Applications 2020年第1期40卷 101-110页

作者： wenjie xiong Danqing LI Zhengcheng ZHANG School of Mathematics Lanzhou Jiaotong University School of Mathematics and Statistics Hainan Normal University

Coherent systems are very important in reliability, survival analysis and other life sciences. In this paper, we consider the number of failed components in an(n-k + 1)-out-of-n system, given that at least m(m < k ≤ n) components have failed before time t, and the system is still working at time t. In this case, we compute the probability that there are exactly i working components. First the reliability and several stochastic properties are obtained. Furthermore,we extend the results to general coherent systems with absolutely continuous and exchangeable components.

关键词： coherent system stochastic order IFR mean signature

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Facilitated transport separation of CO_(2) and H_(2)S by supported liquid membrane based on task-specific protic ionic liquids

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Green Chemical Engineering 2022年第3期3卷 259-266页

作者： Lingling Peng Mingzhen Shi Xiaomin Zhang wenjie xiong Xingbang Hu Zhuoheng Tu Youting Wu Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Yuxiu Postdoctoral Institute Nanjing UniversityNanjing210023China

Selective separation of CO_(2) and H_(2)S from CH_(4) is of importance to the natural gas upgrading because of its cor-rosivity. As is well known, amine group can recognize reversibly CO_(2) and H_(2)S with a moderate interaction. Withthis in mind, this work prepared a series of amine-functionalized supported-protic-ionic-liquid membranes(SPILMs) for the selective separation of CO_(2) and H_(2)S from CH_(4) . For comparison, aprotic ionic liquid membranewas also prepared for natural gas sweetening. The effect of temperature and transmembrane pressure differenceon the permeability of single gas and ideal selectivity of CO_(2)/CH_(4) and H_(2)S/CO_(2) were studied. Facilitated transportmechanism was studied by NMR spectra. The permeability of CO_(2) in primary amine functionalized [DMPDAH][Tf_(2)N]-based membrane decreases with the increasing transmembrane pressure, indicating a typical feature offacilitated transport membrane. The permeability of CO_(2) and the ideal selective of CO_(2)/CH_(4) are as high as 2000 barrers and 53.2 at 313.2 K in [DMPDAH][Tf_(2)N] membrane, significantly higher than those in conventional ILsmembrane. It is anticipated that these amine-functionalized SPILMs can provide alternative insight for the se-lective separation of CO_(2) and H_(2)S from CH_(4) .

关键词： Ionic liquids Carbon dioxide Membrane separation Facilitated transport Natural gas sweentening

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Serum LDH level may predict outcome of chronic lymphocytic leukemia patients with a 17p deletion： a retrospective analysis of prognostic factors in China

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Chinese Journal of Cancer Research 2017年第2期29卷 156-165页

作者： Heng Li wenjie xiong Huimin Liu Shuhua Yi Zhen Yu Wei Liu Rui Lyu Tingyu Wang Dehui Zou Zengjun Li Lugui Qiu State Key Laboratory of Experimental Hematology Institute of Hematology and Blood Disease Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Tianjin 300020 China

Objective： This study aims to evaluate the natural history of patients with chronic lymphocytic leukemia （CLL） and a 17p deletion （17p-） and identify the predictive factors within this subgroup. Methods： The sample of patients with CLL were analyzed by fluorescence in situ hybridization for deletions in chromosome bands 1 lq22, 13q14 and 17p13; trisomy of bands 12q13; and translocation involving band 14q32. The data from 456 patients with or without a 17p- were retrospectively collected and analyzed. Results： The overall response rate （ORR） in patients with a 17p- was 56.9%, and patients with a high percentage of 17p- （defined as more than 25% of cells harbouring a 17p-） had a lower ORR. The median overall survival （OS） in patients with a 17p- was 78.0 months, which was significantly shorter than the OS in patients without this genetic abnormality （median 162.0 months, P〈0.001）. Within the subgroup with a 17p-, the progression-free survival was significantly shorter in patients at Binet stage B-C and patients with elevated lactate dehydrogenase （LDH）, B symptoms, unmutated IGHVand a high percentage of 17p-. Conclusions： These results indicated that patients with a 17p- CLL have a variable prognosis that might be predicted using simple clinical and laboratory characteristics.

关键词： 17p deletion chronic lymphocytic leukemia (CLL) fluorescent in situ hybridization (FISH) del 17pin CLL

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Significant genomic introgression from grey junglefowl(Gallus sonneratii)to domestic chickens(Gallus gallus domesticus)

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Journal of Animal Science and Biotechnology 2024年第4期15卷 1482-1493页

作者： Xiurong Zhao Junhui Wen Xinye Zhang Jinxin Zhang Tao Zhu Huie Wang Weifang Yang Guomin Cao wenjie xiong Yong Liu Changqing Qu Zhonghua Ning Lujiang Qu National Engineering Laboratory for Animal Breeding College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin Xinjiang Production and Construction CorpsTarim UniversityAlar 843300China Beijing Municipal General Station of Animal Science Beijing 100107China Animal husbandry station of Fangchenggang FangchenggangGuangxi Province 538001China Animal Disease Prevention and Control Center of Fangchenggang FangchenggangGuangxi Province 538001China Beijing Agricultural Effect Poultry Industry Co. Ltd.Beijing 101100China Engineering Technology Research Center of Anti‑aging Chinese Herbal Medicine of Anhui Province Fuyang Normal UniversityFuyangAnhui 236037China

Background Chicken is one of the most numerous and widely distributed species around the world,and many studies support the multiple ancestral origins of domestic *** research regarding the yellow skin phenotype in domestic chickens(regulated by BCO2)likely originating from the grey junglefowl serves as crucial evidence for demonstrating the multiple origins of ***,beyond the BCO2 gene region,much remains unknown about the introgression from the grey junglefowl into domestic ***,in this study,based on wholegenome data of 149 samples including 4 species of wild junglefowls and 13 local domestic chicken breeds,we explored the introgression events from the grey junglefowl to domestic *** We successfully detected introgression regions besides BCO2,including two associated with growth trait(IGFBP2 and TKT),one associated with angiogenesis(TIMP3)and two members of the heat shock protein family(HSPB2 and CRYAB).Our findings suggest that the introgression from the grey junglefowl may impact the growth performance of ***,we revealed introgression events from grey junglefowl at the BCO2 region in multiple domestic chicken breeds,indicating a phenomenon where the yellow skin phenotype likely underwent strong selection and was ***,our haplotype analysis shed light on BCO2 introgression event from different sources of grey junglefowl into domestic chickens,possibly suggesting multiple genetic flows between the grey junglefowl and domestic *** In summary,our findings provide evidences of the grey junglefowl contributing to the genetic diversity of domestic chickens,laying the foundation for a deeper understanding of the genetic composition within domestic chickens,and offering new perspectives on the impact of introgression on domestic chickens.

关键词： BCO2 Domestic chickens Grey junglefowl Introgression

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Orbital angular momentum mode logical operation using optical diffractive neural network

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Photonics Research 2021年第10期9卷 2116-2124页

作者： PEIPEI WANG wenjie xiong ZEBIN HUANG YANLIANG HE ZHIQIANG XIE JUNMIN LIU HUAPENG YE YING LI DIANYUAN FAN SHUQING CHEN International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118China Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays South China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou 510006China

Optical logical operations demonstrate the key role of optical digital computing,which can perform general-purpose calculations and possess fast processing speed,low crosstalk,and high *** logic states usually refer to linear momentums that are distinguished by intensity distributions,which blur the discrimination boundary and limit its sustainable ***,we introduce orbital angular momentum(OAM)mode logical operations performed by optical diffractive neural networks(ODNNs).Using the OAM mode as a logic state not only can improve the parallel processing ability but also enhance the logic distinction and robustness of logical gates owing to the mode infinity and *** combining scalar diffraction theory and deep learning technology is designed to independently manipulate the mode and spatial position of multiple OAM modes,which allows for complex multilight modulation functions to respond to logic *** show that few-layer ODNNs successfully implement the logical operations of AND,OR,NOT,NAND,and NOR in *** logic units of XNOR and XOR are obtained by cascading the basic logical gates of AND,OR,and NOT,which can further constitute logical half-adder *** demonstrations may provide a new avenue for optical logical operations and are expected to promote the practical application of optical digital computing.

关键词： network mode momentum

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智能化阀口独立电液控制系统安全性能评估

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机械工程学报 2024年第4期60卷 101-112页

作者：丁孺琦熊文杰程敏徐兵华东交通大学载运工具与装备教育部重点实验室南昌330013 重庆大学高端装备机械传动全国重点实验室重庆400044 浙江大学流体动力基础件与机电系统全国重点实验室杭州310027

阀口独立电液控制系统通过电子化反馈与复杂进出口独立控制策略提高系统智能化水平,但高安全风险也制约了其大规模市场化应用。为此,提出一种面向ISO 13849机器安全标准的阀口独立控制系统安全性能评估方法。针对阀口独立控制系统特有... 详细信息

阀口独立电液控制系统通过电子化反馈与复杂进出口独立控制策略提高系统智能化水平,但高安全风险也制约了其大规模市场化应用。为此,提出一种面向ISO 13849机器安全标准的阀口独立控制系统安全性能评估方法。针对阀口独立控制系统特有的多自由度控制、多变量反馈、多模式切换特点,结合故障树分析法和布尔代数运算建立系统四象限工况安全性模型,构建该模型至ISO13849中预定义安全结构类别的映射,推导系统安全性能等级PL值及其每小时发生引起危险的停机故障概率(PFHd)的量化方法。考虑常规控制、故障诊断与主动容错控制器三类控制方法,分析系统安全结构由类型1单通道至类型3双通道的变换。评估结果表明,系统PL仅为b级,难以满足移动机器d级要求;引入故障诊断后,PL仅提高至c级;增加故障主动容错后,不增加额外硬件冗余情况下PL可增加至d级甚至最高e级。研究工作为智能化电液系统控制、诊断、容错设计构建遵循机器功能安全的评估与指导。

关键词：阀口独立控制安全性能 ISO 13849 故障树分析故障诊断与容错

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我国绿色物流发展的现状及对策

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中国市场 2007年第28期 20-21页

作者：熊文杰武汉商业服务学院

绿色物流是21世纪一种新的物流管理趋势,是指在物流过程中抑制物流对环境造成危害的同时,实现对物流环境的净化,使物流资源得到最充分利用。我国物流业的起步较晚,绿色物流才刚刚兴起,人们对它的认识尚处在起步阶段,存在诸多不足,本文... 详细信息

绿色物流是21世纪一种新的物流管理趋势,是指在物流过程中抑制物流对环境造成危害的同时,实现对物流环境的净化,使物流资源得到最充分利用。我国物流业的起步较晚,绿色物流才刚刚兴起,人们对它的认识尚处在起步阶段,存在诸多不足,本文拟就我国绿色物流发展的障碍及对策进行了简要的分析。

关键词：绿色物流障碍对策

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