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| 1 | Advanced functional nanomaterials with microemulsion phase显示文摘Significant progress has been made in the formulation of the functional nanomaterials with microemulsion phase.Microemulsion phase can be considered as true nanoreactors,which can be used to synthesize nanomaterials.Properties and the mechanism of nanoparticle formation with microemulsion phase are reviewed in this paper.Preparation of the various nanomaterials,such as metal nanomaterials,oxide nanomaterials,magnetic nanoparticles,inorganic and inorganic compounds nanomaterials,metallic-organic composite nanomaterials,and other composite nanomaterials,are investigated with different microemulsion phases.The possible formation mechanisms are presented with the schematic diagram. | LI Wei XU Peng ZHOU HuaCong YANG LiangRong LIU HuiZhou | 2012 | Science China(Technological Sciences)2012，55，2： | 2 |
| 2 | Polystyrene microsphere-immobilized palladium(Ⅱ)porphyrin as mild,reusable,and highly efficient catalyst for Heck reaction显示文摘A novel Heck reaction catalyst consisting of a palladium(Ⅱ) complex of meso-tetra(phydroxyphenyl)porphyrin(MTP) and cross-linked chloromethylated polystyrene microspheres(PMs) was successfully prepared via covalent ether bonds between the chloride groups in the PMs and the hydroxyl groups in MTP.The catalyst was characterized using scanning electron microscopy,Fourier-transform infrared spectroscopy,and inductively coupled plasma atomic emission spectroscopy(ICP-AES).This polystyrene-supported palladium-complex was an efficient heterogeneous catalyst for cross-coupling of aryl iodides with ethyl acrylate.The reaction of iodobenzene and ethyl acrylate under N_2 at 100 ℃ and a catalyst concentration of 0.1%gave a gas chromatography product yield of 99.8%,which is much higher than that achieved using a free palladium(Ⅱ) complex of MTP as the catalyst(41.3%).The catalyst was recycled up to six times without significant loss of catalytic activity.These results suggest that the immobilized palladium(Ⅱ)-MTP catalyst has potential applications in synthetic and industrial chemistry. | Yinbin Huang Liangrong Yang Minghui Huang Jian Wang Lin Xu Wensong Li Huacong Zhou Xitong Sun Huifang Xing Huizhou Liu | 2015 | Particuology2015，13，5： | 1 |
| 3 | Using benzene carboxylic acids to prepare zirconium-based catalysts for the conversion of biomass-derived furfural显示文摘Benzene carboxylic acid (BCAs) are common and useful chemical blocks, which can be derived from the abundant low rank coals (LRCs) via oxidative degradation. In this work, we proposed a novel strategy to utilize BCAs as raw materials to prepare catalysts with transition metal zirconium, and the prepared catalysts were applied into the conversion of the renewable biomass resources. Typical model BCAs in the oxidative products of LRCs, including pyromellitic acid, trimesic acid (TMSA), trimellitic acid, and benzoic acid, were used as the block to construct the Zr- BCAs catalysts. The chemoselective conversion of furfural into furfuryl alcohol (FAL). an important reaction in the biomass conversion chain, is chosen to evaluate the activity of the catalysts. The preparation conditions of the catalysts and experiment factors during the reaction were systematically investigated. The prepared catalysts were characterized by SEM, TEM, XRD and TG-DTG. The results showed that the prepared catalysts were efficient for the conversion of furfural into FAL, among which Zr-TMSA gave the highest activity. Zr-TMSA could be recycled for ten times without obvious deactivation, indicating an excellent stability. The strategy proposed in this work may be beneficial for the value-added utilization of both LRCs and biomass resources. | Huacong Zhou Yufei Sha Zhenhuan Xiao Lu Li Jianmin Hao Keli Yang Na Li Runxia He Quansheng Liu | 2018 | International Journal of Coal Science & Technology2018，5，4： | 1 |
| 4 | Mixing regime shapes the community assembly process,microbial interaction and proliferation of cyanobacterial species Planktothrix in a stratified lake显示文摘Lake mixing influences aquatic chemical properties and microbial community composition,and thus,we hypothesized that it would alter microbial community assembly and interac-tion.To clarify this issue,we explored the community assembly processes and cooccurrence networks in four seasons at two depths(epilimnion and hypolimnion)in a mesotrophic and stratified lake(Chenghai Lake),which formed stratification in the summer and turnover in the winter.During the stratification period,the epilimnion and hypolimnion went through contrary assembly processes but converged to similar assembly patterns in the mixing pe-riod.In a highly homogeneous selection environment,species with low niche breadth were filtered,resulting in decreased species richness.Water mixing in the winter homogenized the environment,resulting in a simpler microbial cooccurrence network.Interestingly,we observed a high abundance of the cyanobacterial genus Planktothrix in the winter,proba-bly due to nutrient redistribution and Planktothrix adaptivity to the winter environment in which mixing played important roles.Our study provides deeper fundamental insights into how environmental factors influence microbial community structure through community assembly processes. | Junwen Chen Huacong Liu Yaohui Bai Jing Qi Weixiao Qi Huijuan Liu Jianfeng Peng Jiuhui Qu | 2022 | Journal of Environmental Sciences2022，34，5： | 0 |
| 5 | Role of intrinsic defects on carbon adsorbent for enhanced removal of Hg^(2+)in aqueous solution显示文摘Carbon is a normally used adsorbent for removal of heavy metal ion in aqueous solutions,but the efficient adsorbent needs intensive modification by heteroatom doped or supported noble metals that cause severe pollution and easy leaching of active components during use.In this paper,the role of intrinsic defects on Hg^(2+)adsorption for carbon adsorbent was investigated.The maximum adsorbing capacity of defectrich carbon has been improved up to 433 mg·g^(-1)which is comparable to most of the modified carbon adsorbents via supported metal chloride or noble metal components.The basicity is increased with the content of defective sites and the strong chemical bonding can be formed via electron transformation between the defect sites with adsorbed Hg^(2+).The present study gives a direction to explore cheap and easily scale-up high-performance mercury adsorbents by simply tuning the intrinsic defective structure of carbon without the necessity to support metal or other organic compounds. | Liu He Yiyang Qiu Chu Yao Guojun Lan Na Li Huacong Zhou Quansheng Liu Xiucheng Sun Zaizhe Cheng Ying Li | 2023 | Chinese Journal of Chemical Engineering2023，61，9： | 0 |
| 6 | Thermodynamic Modeling and Simulation of Air System Control Device显示文摘This paper aims to obtain the thermodynamic characteristics of the air system control device sealing part in different compressor bleed air and ambient temperature.On the basis of considering the main factors affecting the heat exchange process and simplifying the physical model of the air system control device,the thermodynamic model of air system control device is established based on the basic theory of laminar flow heat transfer and heat conduction theory.Then the piston motion characteristics and the thermodynamic characteristics of the air system control device seal are simulated.The simulation results show that the valve actuation dynamic time of piston is about 0.13 s in the actual working conditions,and the temperature effect on the dynamic response of the piston rod is only 5 ms when the inlet air temperature at 300 ℃ and 370 ℃.The maximum temperature of the air system control device sealing part is not more than 290 ℃ under long time working condition of compressor air entraining.The highest temperature of the sealing part can reach up to 340 ℃ when the air flow temperature reaches the limit temperature of 370 ℃,and the longest duration working temperature limit is not more than 14 s.Therefore,the selection of control device sealing material should consider the work characteristic of instantaneous temperature limit. | FU Jiangfeng LI Huacong LIU Xianwei HONG Linxiong | 2019 | Transactions of Nanjing University of Aeronautics and Astronautics2019，36，3： | 0 |
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