Ji Chen

Changchun Institute of Applied Chemistry

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Yuefeng Deng

Nanjing University of Science and Technology

Deqian Li

Lanzhou University

Dan Zou

Xihua University

Hailian Li

Shandong University

Hongmin Cui

Jiangxi Academy of Sciences

Xiaoqi Sun

Chinese Academy of Sciences

Li Zhu

Wuhan Institute of Technology

Hualing Yang

Nantong University

Yu Liu

Nankai University

Wei Wang

Yangzhou University

Cooperative Institutions

Chinese Academy of Sciences

130

Changchun Institute of Applied Chemistry

University of Chinese Academy of Sciences

Jilin University

Peking University

China University of Mining and Technology

University of Science and Technology of China

Sun Yat-sen University

Huazhong University of Science and Technology

Central South University

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GEOGRAPHIC FEATURES OF SEVERLY AFFECTED VEGETATED AREAS IN THE NANLING MOUNTAINS DUE TO THE 2008 ICE STORMS IN SOUTHERN CHINA

Asian Geographer (2010)

Ji Chen Liqun Sun

Abstract The ice/snow storms which occurred from 10 January to 2 February 2008 in southern China were catastrophic to the forest ecosystem. In the study of Chen and Sun (2010), the severely affected vegetated areas due to the storms are identified by using the MODIS enhanced vegetation index (EVI). This study focuses on one of these areas, the Nanling Mountains, to investigate their geographic features. During the storm period, it is found that the Nanling Mountains suffered from only the ice storms. The severely affected vegetated areas generally have a high EVI, indicting a high density of vegetated lands, which are mostly covered by mixed forest. The slopes and drainage contributing areas of the impacted areas are normally larger and smaller, respectively, than those locations at which the vegetation was not severely impacted by the ice storms. The dominant slope aspects are southeast and south for the impacted areas below elevations of 650 m.

10.1080/10225706.2010.9684158

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Citations (0)

One‐Step Ionic‐Liquid‐Assisted Electrochemical Synthesis of Ionic‐Liquid‐Functionalized Graphene Sheets Directly from Graphite

Advanced Functional Materials (2008)

Na Liu Fang Luo Haoxi Wu Yinghui Liu Chao Zhang

Abstract Graphite, inexpensive and available in large quantities, unfortunately does not readily exfoliate to yield individual graphene sheets. Here a mild, one‐step electrochemical approach for the preparation of ionic‐liquid‐functionalized graphite sheets with the assistance of an ionic liquid and water is presented. These ionic‐liquid‐treated graphite sheets can be exfoliated into functionalized graphene nanosheets that can not only be individuated and homogeneously distributed into polar aprotic solvents, but also need not be further deoxidized. Different types of ionic liquids and different ratios of the ionic liquid to water can influence the properties of the graphene nanosheets. Graphene nanosheet/polystyrene composites synthesized by a liquid‐phase blend route exhibit a percolation threshold of 0.1 vol % for room temperature electrical conductivity, and, at only 4.19 vol %, this composite has a conductivity of 13.84 S m −1 , which is 3–15 times that of polystyrene composites filled with single‐walled carbon nanotubes.

Polystyrene

Percolation (cognitive psychology)

Nanosheet

Graphite oxide

10.1002/adfm.200700797

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Citations (1,022)

Preparation of PVDF-based polymer inclusion membrane using ionic liquid plasticizer and Cyphos IL 104 carrier for Cr(VI) transport

Journal of Membrane Science (2011)

Lin Guo Yinghui Liu Chao Zhang Ji Chen

Phosphonium

Cellulose triacetate

Plasticizer

Hexafluorophosphate

Phosphinate

Aliquat 336

10.1016/j.memsci.2011.02.014

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Citations (148)

Direct synthesis of ordered N-methylimidazolium functionalized mesoporous silica as highly efficient anion exchanger of Cr(vi)

Journal of Materials Chemistry (2009)

Li Zhu Chao Zhang Yinghui Liu Dongyang Wang Ji Chen

Ordered N-methylimidazolium functionalized mesoporous silica (SBA-15) anion exchangers were directly synthesized by co-condensation of tetraethoxysilane with 1-methyl-3-(triethoxysilylpropyl)imidazolium chloride. The prepared samples with rod-like morphology showed high surface areas (>400 m2 g−1), well-ordered pores (>58 Å), and excellent thermal stability up to 387 °C. The adsorption behaviors of Cr(VI) from aqueous solution on the anion exchangers were studied using the batch method. The anion exchangers had high adsorption capacity ranging from 50.8 to 90.5 mg g−1, over a wider pH range (1–8) than amino functionalized mesoporous silica. The adsorption rate was fast, and the maximum adsorption was obtained at pH 4.6. The adsorption data for the anion exchangers were consistent with the Langmuir isotherm equation. Most active sites of the anion exchangers were easily accessible. The mixed solution of 0.1 mol L−1 NH3·H2O and 0.5 mol L−1 NH4Cl was effective desorption solution, and 95% of Cr(VI) could be desorbed.

Langmuir adsorption model

Thermal Stability

10.1039/b912345h

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Citations (48)

A novel neutral-base coupling synergistic extraction system of Cyanex923 and primary amine N1923 for the recovery of cerium(IV) and fluorine from sulfuric acid medium

Separation and Purification Technology (2020)

Yufei Yan Ji Chen Kai Li Dan Zou Yuefeng Deng

Endothermic process

Stripping (fiber)

Stoichiometry

Exothermic reaction

10.1016/j.seppur.2020.118026

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Citations (14)

Phase Diagram of [Amim]Cl + Salt Aqueous Biphasic Systems and Its Application for [Amim]Cl Recovery

Journal of Chemical & Engineering Data (2009)

Yuefeng Deng Tao Long Dongli Zhang Ji Chen Shucai Gan

In this study, binodal curves and tie line data of [Amim]Cl + salt (K3PO4, K2HPO4, K2CO3) + water aqueous biphasic systems (ABS) were measured and correlated satisfactorily with the Merchuk equation and Othmer−Tobias and Bancroft equations, respectively. [Amim]Cl could be recovered from aqueous solutions using the ABS, and the recovery efficiency could reach 96.80 %. The recovery efficiency was influenced by the concentrations of the salts and their Homeister series: K3PO4 > K2HPO4 > K2CO3. Our method provides a new and effective route for the recovery of hydrophilic IL using [Amim]Cl + salt + water ABS from aqueous solutions.

Binodal

Aqueous two-phase system

10.1021/je900009a

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Citations (89)

An innovative technique for the separation of ion-adsorption high yttrium rare earth ore by Er (III) / Tm (III) grouping first

Separation and Purification Technology (2021)

Y. B. Han Ji Chen Yuefeng Deng Tianchi Liu Hailian Li

Stripping (fiber)

Separation process

Magnetic separation

10.1016/j.seppur.2021.119929

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Citations (10)

Efficient Chiral Resolution of (±)-Cyclohexane-1,2-Diamine

Journal of Chemical Research (2014)

Chuanzhu Gao Tianshuai Wang Jia Chen Fan Fei Ji Chen

A novel and efficient method has been developed for the chiral resolution and separation from cis-cyclohexane-1,2-diamine of (±)-cyclohexane-1,2-diamine, which reacts with xylaric acid, a substitute for tartaric acid. This method provides (1R,2R)-cyclohexane-1,2-diamine, and (1S,2S)-cyclohexane-1,2-diamine and cis-cyclohexane-1,2-diamine in good yield with high optical purity.

10.3184/174751914x14054315566768

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Citations (2)

A novel ammonium ionic liquid based extraction strategy for separating scandium from yttrium and lanthanides

Separation and Purification Technology (2011)

Xiaoqi Sun Yang Ji Lin Guo Ji Chen Deqian Li

Aqueous two-phase system

10.1016/j.seppur.2011.06.034

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Citations (104)

Reversed micellar solubilization extraction and separation of thorium(IV) from rare earth(III) by primary amine N1923 in ionic liquid

Separation and Purification Technology (2008)