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22篇 您的检索式:作者名="NING YingNan"
    题名 作者 年代 出处 被引量
1The willow genome and divergent evolution from poplar after the common genome duplication显示文摘Xiaogang Dai Quanjun Hu Qingle Cai Kai Feng Ning Ye Gerald A Tuskan Richard Milne Yingnan Chen Zhibing Wan Zefu Wang Wenchun Luo Kun Wang Dongshi Wan Mingxiu Wang Jun Wang Jianquan Liu Tongming Yin 2014Cell Research2014,24,10:28
2PREPARATIOPREPARATION OF 1-OCTENE BY ETHYLENE TETRAMERIZATION WITH HIGH SELECTIVITY显示文摘Two novel PNP ligands have been synthesized and characterized by 1H-NMR, elemen- tal analysis, and mass spectra. In combination with Cr(Ⅲ ) and cocatalyst MAO, they generate active catalytic systems that tetramerize ethylene with both high catalytic activity and high selectivity to produce 1-octene. The results show that these catalyst sys- tems are able to catalyze ethylene tetramerization, with high catalytic activity up to 0.89×106 g/mol Cr.h, and the selectivity of C8 in products is 72.52%, and the percentage of 1-olefins in the C8 cut is 97.87%.JIANG Tao CHEN Hongxia NING Yingnan CHEN Wei 2006Chinese Science Bulletin2006,51,5:13
3Ethylene tetramerization with a highly active and long-lifetime trinuclear diphenylphosphinoamine/Cr(III)/MAO catalyst显示文摘The synthesis and characterization of a novel trinuclear diphosphinoamine ligand 2 are reported. The ligand combined with Cr(III), activated with methylaluminoxane, lead to highly active and long-lifetime catalytic systems for the tetramerization of ethylene to form 1-octene. The effects of reaction temperature, reaction pressure, molar ratio of Al/Cr and bis(diphenylphosphino)amine/Cr on the catalytic activity and product selectivity were studied. Compared with its mononuclear analogue 1, ligand 2 showed a higher catalytic activity and longer lifetime for ethylene tetramerization in the presence of methylaluminoxane as cocatalyst. High molecular weight polyethylene was generated as a by-product with extremely broad molecular weight distributions.JIANG Tao TAO YiQing GAO XiangLu MAO GuoLiang CHEN HongXia CAO ChenGang NING YingNan 2012Chinese Science Bulletin2012,57,13:12
4Synthesis of a novel triple-site diphosphinoamine (PNP) ligand and its applications in ethylene tetramerization显示文摘A novel triple-site diphosphinoamine (PNP) ligand was synthesized and characterized. In combination with Cr(III) and methylaluminoxane (MAO), it generated active catalytic systems for ethylene tetramerization toward 1-octene with high catalytic activity and long lifetime. The effects of reaction temperature, molar ratio of Al/Cr and molar ratio of ligand/Cr on catalytic activity and selectivity to 1-octene were studied with reaction kinetics of the catalytic system for ethylene tetramerization described. At the Al/Cr molar ratio of 100, the catalytic activity is up to 2.29×106 g·mol-1 (Cr)·h-1 and the selectivity to 1-octene is 49.65 wt%.MAO GuoLiang NING YingNan HU WenBo LI ShanMing SONG XianFeng NIU Bo JIANG Tao 2008Chinese Science Bulletin2008,53,22:11
5Effect of Alkylaluminum Activators on Ethylene Trimerization Based on 2,5-DMP/Cr(III)/TCE Catalyst System显示文摘向 1-hexene 的乙烯 trimerization 有 2,5-dimethylpyrrole (2,5-DMP ) 的催化系统 /Cr (III )/alkylaluminum/tetrachloroethane (TCE ) 被调查。在催化活动和产品选择的各种各样的 cocatalysts 的效果被讨论。结果证明 triethylaluminum (茶) , trimethylaluminum (TMA ) , tri-n-hexylaluminum (TNHA ) 和 tri-isobutylaluminum (TIBA ) 都是为向 1-hexene 的乙烯 trimerization 的有效 cocatalysts。2,5-DMP/Cr (III )/TEA/TCE 催化系统为乙烯 trimerization 负担得起最好的结果,当减少副产品的水平时形成。有在催化周期的活跃 Cr 种类的 alkylaluminum 的一些特定的相互作用模式被建议在催化活动和 1-hexene 选择解释 cocatalyst 的效果。Jiang, Tao Ji, Rongxin Chen, Hongxia Cao, Chengang Mao, Guoliang Ning, Yingnan 2011Chinese Journal of Chemistry2011,29,6:3
6A series of novel bisphosphinoamine ligands:Synthesis,characterization and application in ethylene tetramerization显示文摘A series of novel N-halogen-substituted-aryl bisphosphinoamine ligands were synthesized and characterized by elemental analysis,1H NMR and mass spectrometry.The combination of these ligands with Cr(Ⅲ) and activation by methylaluminoxane leads to highly active catalytic systems for the tetramerization of ethylene to form 1-octene.The catalytic activities and product selectivi-ties depend on the aryl ring substituents and the reaction conditions.We found that the location and size of the substituents are important in determining the catalytic activity and selectivity toward 1-octene.This trend is similar to that observed for their alkyl-substituted analogues.JIANG Tao CHEN HongXia CAO ChenGang MAO GuoLiang NING YingNan 2010Chinese Science Bulletin2010,55,33:2
7Recent progress in immobilization of late-transition-metal complexes with diimine ligands for olefin polymerization显示文摘Late-transition-metal(LTM) catalysts are a family of very flexible ethylene polymerization catalysts because their catalytic performance can be easily adjusted by modifying the ligand structure.Their less oxyphilicity character,which may promote the production of copolymers from ethylene and polar comonomers,is another aspect that attracts much attention in both academic and industrial fields.The immobilization of LTM catalysts on spherical supports is a crucial step prior to their use in the industrial processes of gas-phase or slurry polymerizations.This paper reviews recent developments in supported LTM catalysts for olefin polymerization,and summarizes loading methods and mechanisms of the immobilization of LTM catalysts on inorganic,organic,and inorganic-organic materials,and the effects of immobilization on catalytic activity,polymerization mechanism,and polymer morphology.WU Wei JIANG Yan WU Hao LV ChunSheng LUO MingJian NING YingNan MAO GuoLiang 2013Chinese Science Bulletin2013,58,15:1
8Performance of various aluminoxane activators in ethylene tetramerization based on PNP/Cr(III) catalyst system显示文摘Tao Jiang Xiaoyu Liu Yingnan Ning 2007Catalysis Commu-nications2007,8,7:1
9Preparation of 1-octene by the selective tetramerization of ethylene显示文摘Tao Jiang Yingnan Ning Baojun Zhang 2006Journal of Molecular Catalysis A: Chemical2006,259,12:1
10Performance of various aluminoxane activators in ethylene tetramerization based on PNP/Cr ( Ⅲ ) catalyst system 显示文摘Jiang Tao Liu Xiaoyu Ning Yingnan 2007Catalysis Communications2007,8,7:1
11Performance of various aluminoxane activators in ethylene tetramerization based on PNP/Cr(Ⅲ) catalyst system显示文摘Jiang Tao Liu Xiaoyu Ning Yingnan 2007Catalysts Communications2007,,8:1
12Preparation of 1 - octene by the selective tetramerization of ethylene显示文摘Jiang Tao Ning Yingnan Zhang Baojun 2006Journal of Molecular Catalysis A: Chemical2006,259,12:1
13Performance of various aluminoxane activators in ethylene tetramerization based on PNP/Cr (III) catalyst system 显示文摘Jiang Tao Liu Xiaoyu Ning Yingnan 2007Catalysis Communications2007,8,7:1
14Performance of Various Aluminoxane Activators in Ethylene Tetramerization Based on PNP/Cr(Ⅲ)Catalyst System显示文摘Jiang Tao Liu Xiaoyu Ning Yingnan 2007Catal Commun2007,8,7:1
15Foodborne doping and supervision in sports显示文摘Cases of foodborne doping are frequently reported in sports events and can cause severe consequences for athletes.The foodborne doping can be divided into natural endogenous and artifi cially added foods according to the sources,including anabolic agents,stimulants,diuretics,β-blockers,β2 agonists and others.In order to control foodborne doping,chromatographic technique,immunoassay,nuclear magnetic resonance,biosensor technology,pyrolytic spectroscopy,comprehensive analysis and electrochemical analysis have usually used as analytical and inspection strategies.Meanwhile,the legislation of anti-doping,the improvement of testing standard and technology,and the prevention and control of food safety,as well as the improvement of risk perception of athletes are highly necessary for achieving the effective risk control and supervision of foodborne doping,which will be benefi cial for athletes,doctors and administrators to avoid the risks of foodborne doping test and reduce foodborne doping risks for the health of athletes.Wei Chen Xiaoyu Cheng Yingnan Ma Ning Chen 2023Food Science and Human Wellness2023,12,6:1
16Boron- and silicon-bridged bis(diphenylphosphino)-type ligands for chromium-catalyzed ethylene oligomerization显示文摘PNP-type ligands showed very good property in the catalytic systems of PNP/Cr(Ⅲ)/methylaluminoxane(MAO)for ethylene selective tetramerization toward1-octene.In this research,two PNP analogues bis(diphenylphosphino)phenylborane and bis(diphenylphosphino)dimethylsilane have been synthesized and characterized.In combination with CrCl3(THF)3as active center and MAO as cocatalyst,these ligands produced a new catalytic systems for ethylene oligomerization to linear α-olefins with catalytic activities of up to 3.07 9 106g mol-1(cat)h-1.Herein,we report the effects of the reaction temperature,ethylene pressure,and the molar ratio of Al/Cr on the catalyst activities and product selectivities.Yueming Sun Yanhui Chen Guoliang Mao Yingnan Ning Tao Jiang 2014Chinese Science Bulletin2014,59,21:1
17Performance of various aluminoxane activators in ethylene tetramerization based on PNP/Cr (III) catalyst system 显示文摘JIANG Tao LIU Xiaoyu NING Yingnan 2007Catal Commun2007,8,7:1
18Preparation of 1 - oetene by the selective tetramerization of ethylene 显示文摘JIANG Tao NING Yingnan ZHANG Baojun 2006J Mol Catal A: Chem2006,259,12:1
19Recent progresses of late-transition metal complexes with nonsymmetric diimine ligands in ethylene polymerization and oligomerization显示文摘Researches of late-transition metal complexes for ethylene polymerization and oligomerization have attracted a lot of attention in the last two decades.A large number of late-transition metal complexes with symmetric diimine ligands have been extensively studied.Although the research of unsymmetric diimine late-transition metal complexes was still in the initial stage,some superior performances were observed in olefin polymerization.Recent developments in the research of ethylene polymerization and oligomerization catalyzed by late-transition metal complexes with unsymmetric diimine ligands were summarized in this review,with the influence of complex structure on the catalytic performance of the catalyst analyzed.Guoliang Mao Yue Jiang Ning Li Qin Wang Dejin Zheng Meijiao Li Yingnan Ning 2014Chinese Science Bulletin2014,59,21:0
20Advanced nano drug delivery systems for neuroprotection against ischemic stroke显示文摘Ischemic stroke(IS)represents a significant threat to brain health due to its elevated mortality and disability rates.The efficacy of small-molecule neuroprotective agents has been impeded by challenges associated with traversing the blood-brain barrier(BBB)and limited bioavailability.Conversely,advanced nano drug delivery systems hold promise for overcoming these obstacles by facilitating efficient transportation across the BBB and maintaining optimal drug concentrations.This review aims to explore advanced neuroprotective nano drug delivery systems as a means of effectively administering neuroprotective agents to the brain using pharmaceutical approaches in the treatment of IS.By examining these systems,researchers and clinicians can gain valuable insights and innovative concepts,illuminating the potential of advanced neuroprotective nano drug delivery systems.Leveraging these advancements can drive the progress of pioneering and efficacious therapeutic interventions for IS.Chenchen Xie Jun Liao Ning Zhang Yuhan Sun Yi Li Liyan Xiong Yingnan Zhang Xiaoyan Liu Wei Su Heming Chen Ping Zeng Xiaoqing Zhang Ying Lu Tingfang Wang Chuan Zhang 2024Chinese Chemical Letters2024,35,2:0
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