Institution
Henan Normal University
Education•Xinxiang, China•
About: Henan Normal University is a education organization based out in Xinxiang, China. It is known for research contribution in the topics: Catalysis & Ionic liquid. The organization has 10863 authors who have published 11077 publications receiving 166773 citations.
Topics: Catalysis, Ionic liquid, Adsorption, Photocatalysis, Graphene
Papers published on a yearly basis
Papers
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TL;DR: Several new delay-dependent passive criterions are derived in terms of linear matrix inequalities (LMIs) which can be easily checked by the Matlab LMI toolbox.
Abstract: In this paper, the passivity analysis problem is investigated for uncertain neural networks with time-varying discrete and distributed delays. Based on direct delay decomposition idea and free-weighting matrix approach, several new delay-dependent passive criterions are derived in terms of linear matrix inequalities (LMIs), which can he easily checked by the Matlab LMI toolbox. Numerical examples show that the obtained results improve some existing ones.
57 citations
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TL;DR: In this article, a 1-alkylcarboxylic acid-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquids, [(CH2)nCOOHmin][Tf2N] (n = 3, 5, 7), were synthesized and used to separate neodymium (III) from Fe(III) and samarium (III), from Co(II) in aqueous solutions.
Abstract: The recovery of rare-earth metals from waste materials is very important due to the risks associated with having a low supply of them in the future. In this work, hydrophobic 1-alkylcarboxylic acid-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquids, [(CH2)nCOOHmin][Tf2N] (n = 3, 5, 7), were synthesized and used to separate neodymium (III) from Fe(III) and samarium (III) from Co(II) in aqueous solutions. The factors affecting the solvent extraction process such as phase volume ratio, contact time, pH value of the aqueous phase, alkyl chain length of the ionic liquids, and temperature of the system were examined systematically. It was found that the maxmium extraction efficiency of the investigated metal ions was as high as 99%, and Sm(III) and Nd(III) could be selectively separated from Co(II) and Fe(III), with separation factors of 104–105, by simply modulation of the aqueous phase pH. After extraction, about 97% of the metal ions could be stripped from ionic liquid phase in a single stri...
57 citations
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TL;DR: A highly regioselective Pd-catalyzed C(Ar)-H bond activation method was developed for the modification of purines (nucleosides) with different functional groups by using purine as a directing group.
57 citations
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57 citations
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TL;DR: In this paper, carboxylic acid-based ionic liquids (CAILs) were designed and synthesized, and they displayed temperature-dependent dissolution-precipitation transitions in propylene carbonate (PC) by controlling the chain length of the carboxyl group.
Abstract: Carboxylic acid-based ionic liquids (CAILs) were designed and synthesized. They displayed temperature-dependent dissolution–precipitation transitions in propylene carbonate (PC) by controlling the chain length of the carboxyl group. It was found that it could be attributed to the temperature-controlled hydrogen-bond formation/broken between the CAILs components and PC by NMR investigations and DFT calculations. Such a unique phase behavior was successfully utilized for the cycloaddition reaction of CO2 with epoxides. Due to the activation of epoxide assisted by the hydrogen bond, the optimal ILs could show a 92% yield of PC within 20 min and quickly precipitate out from a homogeneous system at room temperature for easy recycling. The reversible phase transition phenomenon supplied an efficient way to combine activity and recovery of homogeneous catalysts, which is a benefit for energy-saving and industrial applications.
57 citations
Authors
Showing all 10953 results
Name | H-index | Papers | Citations |
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Hua Zhang | 163 | 1503 | 116769 |
Jie Wu | 112 | 1537 | 56708 |
Peng Wang | 108 | 1672 | 54529 |
Lei Liu | 98 | 2041 | 51163 |
Lixia Zhang | 93 | 351 | 47817 |
Zhongwei Chen | 92 | 511 | 33700 |
Wei Chen | 90 | 938 | 35799 |
Zhiguo Ding | 88 | 817 | 35162 |
Xiaolong Wang | 81 | 966 | 31455 |
Junhua Li | 77 | 480 | 21626 |
Jiujun Zhang | 76 | 276 | 39624 |
Lei Liao | 75 | 276 | 18815 |
Peng Xu | 75 | 1151 | 25005 |
Wei Wang | 75 | 1167 | 23558 |
Tony D. James | 73 | 435 | 21605 |