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Photolysis and Cycloaddition Reactivity of Diferrocenyl Substituted Cyclopentadienone

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Chemical Research in Chinese Universities 2016年第5期32卷 775-780页

作者： ZHANG xiaoyong HAN Limin gao Yuanyuan SHI Jiale SUO Quanling Chemical Engineering College Inner Mongolia University of Technology Hohhot 010051 P. R. China Department of Chemistry Baotou Teacher's College Baotou 014030 P. R. China

The photolysis results of new diferrocenyl substituted cyclopentadienone（3） show that sunlight and air play an important role in the decomposition of compound 3, and two new compounds, 2-cyclopentenone（4） and a-pyrone（5）, were obtained via photolysis of compound 3. The photolysis process was investigated by IH NMR, and a plausible mechanism for the formation of compound 5 was deduced. The cycloaddition reactions of substituted cyclopentadienones（3, 7, 9） with maleimide gave substituted imides 8, 10, 11, 12 and an unprecedented diferrocenyl substituted 1H-pyrrol-3（2H）-one derivative 13, respectively. The structures of compounds 4, 5, 8, 10, 11, 12 and 13 were confirmed by X-ray single crystal diffraction analysis technique.

关键词： Cyclopentadienone Reactivity Photolysis Cycloaddition Crystal structure

Reactivity of Organolithium Reagents to 2,3,4,5-Tetraphenylcyclopentadienone and Crystal Structures of Addition Products

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Chemical Research in Chinese Universities 2015年第5期31卷 736-741页

作者： ZHANG xiaoyong HAN Limin ZHU Ning gao Yuanyuan SUO Quanling Chemical Engineering College Inner Mongolia University of Technology Hohhot 010051 P. R. China Department of Chemistry Baotou Teacher's College Baotou 014030 P. R. China

The conjugate addition reactions of four organolithium reagents to 2,3,4,5-tetraphenylcyclopentadienone （tetracyclone） were investigated to reveal the reactivity of organolithium reagents to tetracyclone. The results show that 1,2-addition products 2,3,4,5-tetraphenyl-1-（2-thienyl）-2,4-cyclopentadien-l-ol（1）, 1-n-butyl-2,3,4,5-tetraphenyl- 2,4-cyclopentadien-l-ol（2） and 1,2,3,4,5-pentaphenyl-2,4-cyclopentadien-1-ol（3） were synthesized in excellent yields while tetracyclone reacted with 2-thienyllithium, n-butyllithium and phenyllithium, respectively. Interestingly, three 1,2-, 1,4- and 1,6-addition isomers 1-tert-butyl-2,3,4,5-tetraphenyl-2,4-cyclopentadien-1-ol（4）, 4-tert-butyl-2,3,4,5- tetraphenyl-2-cyclopenten-1-one（5） and 2-tert-butyl-2,3,4,5-tetraphenyl-3-cyclopenten-1-one（6）, were simultaneously obtained by the conjugate addition reaction of tert-butyllithium with larger steric hindrance to tetracyclone. Compounds 1-6 were characterized by ^1H and ^13C NMR spectra, Fourier transform infrared（FTIR） spectra and mass spectra（MS）. The crystal and molecular structures of compounds 1, 2 and isomers 5, 6 were determined by X-ray single crystal diffraction technique. The results imply that the steric hindrance of tert-butyllithium probably play a key role in controlling the conjugate addition reaction. The conjugate addition mechanism of organolithium reagents to tetracyclone was proposed.

关键词： Conjugate addition reaction 2,3,4,5-Tetraphenylcyclopentadienone Organolithium reagent Steric hindrance

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中国陆上油气田生产智能化现状及展望

前瞻科技 2023年第2期2卷 121-130页

作者：檀朝东刘合高小永郝忠献李秋实中国石油大学(北京)信息科学与工程学院北京102249 中国石油勘探开发研究院北京100083 中国石油长庆油田分公司数字和智能化事业部西安710018

随着中国陆上油气资源品位呈劣质化趋势,主力老油田普遍进入特高含水期,油气田进入深度精细开发的新阶段,数字化转型和智能化发展成为必然选择。文章分析了国际智能油田技术发展现状与趋势、中国陆上油气田生产数字化建设现状与智能化... 详细信息

随着中国陆上油气资源品位呈劣质化趋势,主力老油田普遍进入特高含水期,油气田进入深度精细开发的新阶段,数字化转型和智能化发展成为必然选择。文章分析了国际智能油田技术发展现状与趋势、中国陆上油气田生产数字化建设现状与智能化探索进展。指出中国未来智能油气田应着力构筑全新的智能油气生产生态,提升复杂工况油气生产全流域的智能化水平,发展油藏注采注入端和采出端自动匹配的油藏-工程一体化生产技术,发展先进智能完井技术及智能协同调控系统,实现复杂油藏生产由“滞后调控”向“实时优化”转变。

关键词：陆上油田油气生产数字化转型智能化发展绿色低碳

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本征纳米硅薄膜的微结构表征

真空科学与技术学报 2007年第3期27卷 200-202页

作者：刘绪伟郜小勇赵剑涛杨仕娥陈永生谷锦华卢景霄郑州大学教育部材料物理重点实验室郑州450052

采用PECVD技术,在玻璃衬底上低温沉积了优质本征纳米硅薄膜,并利用Raman光谱对其微结构作了表征。研究结果表明,硅烷浓度、衬底温度Ts对表征纳米硅薄膜微结构的晶化率和平均晶粒尺寸参数影响很大。SiH4浓度越低,越有利于晶化,对应的晶... 详细信息

采用PECVD技术,在玻璃衬底上低温沉积了优质本征纳米硅薄膜,并利用Raman光谱对其微结构作了表征。研究结果表明,硅烷浓度、衬底温度Ts对表征纳米硅薄膜微结构的晶化率和平均晶粒尺寸参数影响很大。SiH4浓度越低,越有利于晶化,对应的晶化率拐点温度越低。平均晶粒尺寸、晶化率随衬底温度的升高具有相似的变化规律,谱中出现的拐点温度一致,暗示它们之间存在紧密的联系。从薄膜生长角度对该实验结果作了合理解释。

关键词：纳米硅晶化率晶粒尺寸拐点温度

Peroxymonosulfate activation based on Co_(9)S_(8)@N-C:A new strategy for highly efficient hydrogen production and synchronous formaldehyde removal in wastewater

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Journal of Materials Science & Technology 2022年第32期127卷 256-267页

作者： Caiyan gao Xuezhen Feng Lian Yi xiaoyong Wu Renji Zheng gaoke Zhang Yubiao Li School of Resources and Environmental Engineering Wuhan University of TechnologyWuhan 430070China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Formaldehyde(FA),as an important chemical raw material,has been widely used in many ***,the discharge of a large amount of FA-containing wastewater poses a serious threat to the environment and human ***,the in-situ hydrogen energy release technology of hydrogen-containing stable liquid has been extensively explored due to its safe *** a robust method to achieve FA removal and synchronous in-situ hydrogen release from FA containing wastewater is of great significant for environmental protection and energy crisis ***,we have innovatively introduced peroxymonosulfate(PMS)activation technology into FA removal and hydrogen production *** composite of nitrogen doped carbon coating Co_(9)S_(8)nanotubes(Co_(9)S_(8)@N-C)is employed as a proof of concept for FA decomposition and simultaneously hydrogen production based on PMS activation *** expected,the Co_(9)S_(8)@N-C/PMS system presents much superior hydrogen production efficiency and satisfactory FA removal rate towards FA wastewater than those of common catalysis,photocatalysis and Fenton reaction in the basic condition in a wide range of FA *** hydrogen yield reaches a value as high as 471μmol within 60 min,corresponding to a FA degradation rate of 30%with an initial FA concentration of 0.722 mol L^(-1).Characterizations and density functional theory(DFT)calculations suggest that the free radical process dominated by superoxide radical(O_(2)·^(-))and nonradical process dominated by singlet oxygen(^(1)O_(2)),which are induced by Co_(9)S_(8)@N-C/PMS system,are responsible for highly efficient hydrogen production via FA *** generated O_(2)·^(-)and ^(1)O_(2)can extract·H from FA to form·OOH intermediate,which can further combine with the·H from water to produce *** study provides an applicable technique for environmental purification and new energy development based on FA containing wastewater.

关键词： Peroxymonosulfate activation Co9S8@N–C Hydrogen evolution Formaldehyde removal

Synthesis of Trisubstituted Isoxazoles from Nitroenamines and Aromatic Aldehydes

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Chinese Journal of Chemistry 2017年第10期35卷 1517-1521页

作者： Chao Lei Zhenhong gao Xusheng Shao xiaoyong Xu Zhong Li Shanghai Key Laboratory of Chemical Biology School of Pharmacy East China University of Science and Technology Shanghai 200237 China Shanghai Collaborative Innovation Center for Biomanufaeturing Technology Shanghai 200237 China

A novel approach for the synthesis of trisubstituted isoxazoles from nitroenamines and aromatic aldehydes is developed. L-Proline/potassium carbonate system was employed to promote this process. The reaction underwent nucleophilic attack of nitroenamines to aromatic aldehydes, intramolecular denitration, tautomerization and elimination of H2O to furnish the target compounds.

关键词： isoxazoles nitroenamines denitration heterocycles synthetic methods

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有机连翘叶茶中核心营养素及功效成分的测定

农产品加工 2016年第7期 55-56,58页

作者：王晓燕杨莹莹叶松华冯夏珍高骁勇山西省医药与生命科学研究院山西太原030006 山西省左权县馨源丰商贸有限公司山西晋中032600

采用不同分析方法测定分析了有机连翘叶茶的核心营养素及其功效成分。3个批次样品的核心营养素含量分别为蛋白质19.63%,脂肪0.31%,碳水化合物62.52%,钠54.87 mg/100 g;功效成分含量分别为总黄酮24.12%,连翘酯苷7.29%,连翘苷5.43%。结果... 详细信息

采用不同分析方法测定分析了有机连翘叶茶的核心营养素及其功效成分。3个批次样品的核心营养素含量分别为蛋白质19.63%,脂肪0.31%,碳水化合物62.52%,钠54.87 mg/100 g;功效成分含量分别为总黄酮24.12%,连翘酯苷7.29%,连翘苷5.43%。结果显示,有机连翘叶茶中含有丰富的营养物质,且总黄酮、连翘酯苷和连翘苷含量较高,是一种低脂、高营养的保健饮品。

关键词：连翘叶茶核心营养素功效成分测定

Responses of Nutrients to the Precipitation Variation and Land Use in Subtropical Monsoonal Small Mountainous Rivers:A Case Study of Baixi Watershed

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Journal of Ocean University of China 2024年第2期23卷 383-391页

作者： TIAN Yuan gao Fei CAO Ke LV Shenghua DUAN xiaoyong YIN Ping Qingdao Institute of Marine Geology China Geological SurveyMinistry of Natural ResourcesQingdao 266237China Laboratory for Marine Geology Laoshan LaboratoryQingdao 266237China

Small mountainous rivers are characterized by large instantaneous fluxes and susceptible to extreme weather events,which can rapidly transport materials into the sea and have a significant impact on the ecological environment of estuaries and *** order to investigate the seasonal characteristics of nutrients in small mountainous rivers in the subtropical monsoon region and the output pattern to the sea during heavy precipitation,surveys on the mountainous rivers were carried out in Baixi watershed in August 2020(wet season),March 2021(dry season)and June 2021(Meiyu period).The results showed that the dissolved inorganic nitrogen(DIN)of the rivers has an average concentration of 752μg L^(−1)in the wet season and 1472μg L^(−1)in the dry *** concentrations of dissolved inorganic phosphorus(DIP)in wet season and dry season were 63μg L^(−1)and 51μg L^(−1),*** by the changes of land use in sub-watersheds,DIN concentrations in the mainstream increased from 701μg L^(−1)in the upper reaches to 1284μg L^(−1)in the middle *** rainstorms during the Meiyu period in the watershed caused the pulse runoff in the *** maximum daily runoff reached 70 times that before *** maximum daily fluxes of DIN and DIP were 109 and 247 times that before rains,*** view that the watershed experienced several rainstorms in the wet season,the river,with pulse runoff,carries a large amount of nutrients into the sea in a short time,which will have a significant impact on the environment of Sanmen bay and its adjacent sea.

关键词： small mountainous river uneven precipitation rainstorm pulse runoff nitrogen and phosphorus

Recent progress in hydrodynamic characteristics research and application of annular centrifugal extractors

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Frontiers of Chemical Science and Engineering 2022年第6期16卷 854-873页

作者： Hang Yang xiaoyong Yang Xiao Dong Zhaojin Lu Zhishan Bai Yinglei Wang Fulei gao School of Mechanical and Power Engineering East China University of Science and TechnologyShanghai 200237China Xi'an Modern Chemistry Research Institute Xi'an 710000China

The annular centrifugal extractor(ACE)integrates mixing and *** has been widely used in many industrial fields because of its low residence time,compact structure,and high mass transfer *** of the literature has focused on flow instabilities,flow visualization,and computational fluid dynamics *** recently,research on hydrodynamic behavior and structural optimization has received widespread *** the development of ACE technology,applications have been broadened into several new ***,this paper reviews research progress regarding ACE in terms of hydrodynamic characteristics and the structural *** latest applications covering hydrometallurgy,nuclear fuel reprocessing,bio-extraction,catalytic reaction,and wastewater treatment are *** also evaluate future work in droplet breakup and coalescence mechanisms,structural improvements specific to different process requirements,scaling-up methods,and stability and reliability after scaling-up.

关键词： annular centrifugal extractor hydrodynamic characteristics structure optimization the latest application

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