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Journal of energy Chemistry 2020年第8期29卷 221-224,I0008页

作者： Kan Mi Lanlan Song Hongjiao Nie Tao Liu Xianfeng Li Key Laboratory of Functional Nanomaterials and Technology in Universities of Shandong School of Chemistry and Chemical EngineeringLinyi UniversityLinyi 276000ShandongChina Division of energy Storage Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

In the past few decades, supercapacitor(SC) has attracted great attention due to its significant advantages over traditional rechargeable battery systems, such as high power density, fast charge-discharge rate, long cycle life and environmental friendliness [1]. Up to now, supercapacitors have been widely used in backup power, electric vehicles, mobile power and so on [2,3].

关键词： Supercapacitor ZIF-8 Electrospinning Ozone treatment Layer-by-layer

Smelting chlorination method applied to removal of copper from copper slags

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Journal of Central South University 2015年第1期22卷 59-65页

作者：李磊王华胡建杭 State Key Laboratory of Complex Nonferrous Metal resources Clean Utilization Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction of Ministry of Education(Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology)

In order to reasonably utilize the iron resources of copper slags, the smelting chlorination process was used to remove copper from copper slags. Higher holding temperature and O2 flow rate are beneficial to increasing copper removal rate. However,the Cu2O mode is formed by the reaction of surplus O2 and CuCl with O2 flow rate increasing over 0.4 L/min, causing CuCl volatilization rate and copper removal rate to decrease. The resulting copper removal rate of 84.34% is obtained under the optimum conditions of holding temperature of 1573 K, residence time of 10 min, Ca Cl2 addition amount of 0.1(mass ratio of CaCl2 and the copper slag) and oxygen flow rate of 0.4 L/min. The efficient removal of copper from copper slags through chlorination is feasible.

关键词： copper slags smelting chlorination copper removal volatilization waste utilization

A kinetic study on pyrolysis and combustion characteristics of oil cakes： Effect of cellulose and lignin content

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燃料化学学报 2011年第4期39卷 265-270页

作者： Ramakrishna Gottipati Susmita Mishra Department of chemical Engineering National Institute of Technology Rourkela India 769008

Pyrolysis and combustion characteristics of three different oil cakes such as Pongamia(Pongamia Pinnata),Madhuca(Madhuca Indica),and Jatropha(Jatropha curcas) were investigated in this *** cellulose and lignin contents of oil cakes play very important role in pyrolysis and combustion processes.A kinetic investigation of three oil cakes was carried out and major part of the samples decomposed between 210℃ and 500℃.Pyrolysis and combustion were carried out with the mixtures of cellulose and lignin chemicals in different ratios and compared with the oil *** biomass with higher cellulose content showed faster rate of pyrolysis than the biomass with higher lignin *** at higher temperatures(>600℃) all the oil cakes exhibited similar conversion at low heating rate in N2 *** activation energies increased for Madhuca and Pongamia oil cakes indicating the presence of more cellulose whereas,low activation energy of Jatropha confirms more lignin content.

关键词：热分解燃烧纤维素木质素

Effects of temperature and solvent concentration on the solvent crystallization of palm-based dihydroxystearic acid with isopropyl alcohol

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Particuology 2012年第1期10卷 127-131页

作者： Gregory F.L. Koay Teong-Guan Chuah Sumaiya Zainal-Abidin Salmiah Ahmad Thomas S.Y. Choong Department of chemical and Environmental Engineering Universiti Putra Malaysia Advanced Oleochemical Technology Division Malaysian Palm Oil Board institute of Tropical Forestry and Forest Products Universiti Putra Malaysia Faculty of chemical and Natural resources Engineering Universiti Malaysia Pahang Director General's Office Malaysian Rubber Board

Palm-based dihydroxystearic acid of 69.55% purity was produced in a 500-kg-per-batch operation pilot plant and purified through solvent crystallization in a custom fabricated simultaneous batch crystallizer unit. The effects of temperature and solvent concentration on yield, particle size distribution and purity were studied. The purity was higher, while the yield and particle size were lower and smaller, respectively, at higher temperature and solvent concentration. The solvent crystallization process efficiency was rated at 66-69% when carried out with 70-80% isopropyl alcohol at 20℃.

关键词： Dihydroxystearic acidPilot plant operationSolvent crystallizationSimultaneous batch crystallizerprocess efficiency

BLE beacons for sample position estimation in a life science automation laboratory

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Transportation Safety and Environment 2024年第3期6卷 111-123页

作者： Haiping Wu Steffen Junginger Thomas Roddelkopf Hui Liu Kerstin Thurow institute of Artificial Intelligence&Robotics(IAIR) Key Laboratory of Traffic Safety on Track of Ministry of EducationSchool of Traffic and Transportation EngineeringCentral South UniversityChangsha 410075HunanChina institute of Automation(IAT) University of Rostock18119 RostockGermany Center of Life Science Automation(celisca) University of Rostock18119 RostockGermany

Estimation of the sample position is essential for working process monitoring and management in the life science automation lab*** low-energy(BLE)beacons have the advantages of low price,small size and low energy consumption,which make them a promising solution for sample position estimation in the automated *** fingerprinting models have been proposed to achieve indoor localization with the received signal strength(RSS)***,most of the research depends on intensive beacon *** estimation,which depends entirely on one beacon,is more suitable for sample position estimation in large automated *** complexity of the life science automation laboratory environment brings challenges to the traditional path loss model(PLM),which is a widely used radio wave propagation model-based proximity estimation *** this paper,BLE sensing devices for sample position estimation are *** BLE beacon-based proximity estimation is discussed in the framework of machine learning,in which the support vector regression(SVR)is utilized to model the nonlinear relationship between the RSS data and distance,and the Kalman filter is utilized to decrease the RSS data *** experimental results over different environments indicate that the SVR outperforms the PLM significantly,and provides 1 m absolute errors for more than 95%of the testing *** Kalman filter brings benefits to stable distance *** from proximity-based sample position estimation,the proposed framework turned out to be effective in position estimation between parallel workbenches and position estimation on an automated workstation.

关键词： BLE beacon position estimation proximity estimation received signal strength(RSS) support vector regression(SVR) life science automation laboratory

Catalytic Activity of the Black Liquor and Calcium Mixture in CO2 Gasification of Fujian Anthracite

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Chinese Journal of chemical Engineering 2007年第5期15卷 670-679页

作者： Gul-e-Rana JAFFRI 张济宇 institute of chemical Engineering and Technology Fuzhou University Fuzhou 350002 China

CO2 gasification of Fuijian high-metamorphous anthracite with black liquor （BL） and/or mixture of BL and calcium stuff （BL＋Ca） as catalyst was studied by using a thermogravimetry under 750-950℃ at ambient pressure. When the coal was impregnated with an appropriate quantity of Ca and BL mixture, the catalytic activity of CO2 gasification was enhanced obviously. With a loading of 8%Na-BL＋2%Ca, the carbon conversion of three coal samples tested reaches up to 92.9%-99.3% at 950℃ within 30min. The continuous formation of alkali surface compounds such as （[-COM], [-CO2M]） and the presence of exchanged Ca, such as calcium phenolate and calcium carboxylates （COO）2Ca, contribute to the increase in catalytic efficiency, and using BL＋Ca is more efficient than that adding BL only, The homogeneous model and shrinking-core model were applied to correlate the data of conversion with time and to estimate the reaction rate constants under different temperature. The corresponding reaction activation energy （Ea） and pre-exponential factor of three anthracites were estimated. It is found that Ea is in the range from 73.6 to 121.4kJ·mol^-1 in the case of BL＋Ca, and 74.3 to 104.2kJ·mol^-1 when only BL was used as the catalyst, both of which are much less than that from 143.5 to 181.4kJ·mol^-1 if no catalyst used. It is clearly demonstrated that both of BL＋Ca mixture and BL could be the source of cheap and effective catalyst for coal gasification.

关键词： thermogravimetry black liquor calcium catalytic gasification high-metamorphous anthracite reaction kinetics

Experimental Study on Vertical Dilute Phase Gas Conveying

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Chinese Journal of chemical Engineering 2003年第1期11卷 115-120页

作者：景山黄凯胡庆元王金福金涌 instituteof Nuclear energy Technology Tsinghua University Departmentof chemical Engineering Tsinghua University

An experimental study of vertical gas conveying of Geldart-D powder as a dilute phase is performed in a pipe of length 22m and internal diameter 0.05m using a fluidized blow tank at gas velocity ranging from 5m.S-1 to 13m.s-1 and loading ratio up to about 30. The characteristics of gas conveying, such as pressure drop, the choking velocity and the minimum primary velocity of the fluidized blow tank, are discussed in detail.

关键词： Geldart-D particle dilute gas conveying choking pressure drop

Nanoseparation-lnspired Manipulation of the Synthesis of CdS Nanorods

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Nano Research 2011年第2期4卷 226-232页

作者： Xiaoming Sun Xiuju Ma Lu Bai Junfeng Liu Zheng Chang David G. Evans Xue Duan Jiaou Wang Joseph F. Chiang State Key Laboratory of chemical Resource Engineering RO. Box 98 Beijing University of Chemical Technology Beijing 100029 China institute of High energy Physics Beijing 100039 China Department of Chemistry and Biochemistry SUNY-Oneonta Oneonta NY 13820 USA

CdS nanorods have been sorted by length using a density gradient ultracentrifuge rate separation method. The fractions containing longer rods showed relatively stronger oxygen-related surface trap emission, while the shorter ones had dominant band-edge emission. These results suggest that the final length distribution of CdS nanorods is not a result of random nucleation and growth, but is related to the local synthesis conditions. Inspired by these findings, different synthesis environments （N2, air, and 02） have been employed in order to tailor the length distribution. In addition to the rod length, the photoluminescence properties of CdS nanorods can also be manipulated. Increasing the oxygen partial pressure significantly changed the growth behavior of CdS nanorods by improving the anisotropic growth.

关键词： Nanoseparation quantum rods CdS photoluminescence controlled synthesis

Mesoporous poly(ionic liquid)s with dual active sites for highly efficient CO_(2)conversion

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Green energy & Environment 2023年第2期8卷 478-486页

作者： Yawen Fu Yanan Xu Zepeng Zeng Abdul-Rauf Ibrahim Jin Yang Shuliang Yang Yaqiang Xie Yanzhen Hong Yuzhong Su Hongtao Wang Yanliang Wang Li Peng Jun Li Wendy L.Queen College of Chemistry and chemical Engineering Xiamen UniversityXiamen361005China Mechanical Engineering Department Tamale Technical UniversityTamaleGhana College of energy Xiamen UniversityXiamen361102China National Engineering Laboratory for Green chemical Productions of Alcohols Ethers and EstersXiamen UniversityXiamen361005China Collaborative Innovation Center of Chemistry for energy Materials Xiamen361005China institute of chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne(EPFL)EPFL-ISIC-ValaisSionSwitzerland

Atmospheric CO_(2)concentrations are soaring due to the continued use of fossil fuels in energy production,an anthropogenic activity that is playing a leading role in global ***,research aimed at the capture and conversion of CO_(2)into value-added products,such as cyclic carbonates,is *** CO_(2)is an abundant,cheap,non-toxic,and readily accessible Cl feedstock,its thermodynamic stability necessitates the development of highly efficient catalysts that are able to promote chemical reactions under mild *** this work,a novel mesoporous poly(ionic liquid)with dual active sites was synthesized through a facile method that involves co-polymerization,post-synthetic metalation,and supercritical CO_(2)*** to a high density of nucleophilic and electrophilic sites,the as-prepared poly(ionic liquid),denoted as P2D-4BrBQA-Zn,offers excellent performance in a CO_(2)cycloaddition reaction using epichlorohydrin as the substrate(98.9%conversion and 96.9%selectivity).Moreover the reaction is carried out under mild,solvent-free,and additive-free ***,P2D-4BrBQA-Zn also efficiently promotes the conversion of various other epoxide substrates into cyclic ***,the catalyst is found to have excellent substrate compatibility,stability,and recyclability.

关键词： Mesoporous poly(ionic liquid) Nucleophile/electrophilic sites Carbon dioxide cycloaddition Heterogeneous catalysis Supercritical CO_(2)drying

Pairing nitroxyl radical and phenazine with electron-withdrawing/-donating substituents in “water-in-ionic liquid” for high-voltage aqueous redox flow batteries

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Green energy & Environment 2024年第4期9卷 713-722页

作者： Zhifeng Huang Rolf Hempelmann Yiqiong Zhang Li Tao Ruiyong Chen Transfercenter Sustainable Electrochemistry Saarland University and KIST Europe66125SaarbruckenGermany State Key Laboratory of Chem/Bio-Sensing and Chemometrics College of Chemistry and chemical Engineering Hunan University Changsha410082HunanChina College of Materials Science and Engineering Changsha University of Science and Technology Changsha410114HunanChina Materials Innovation Factory Department of ChemistryUniversity of LiverpoolLiverpoolL697ZDUnited Kingdom

Aqueous redox-active organic materials-base electrolytes are sustainable alternatives to vanadium-based electrolyte for redoxﬂow batteries(RFBs)due to the advantages of high ionic conductivity,environmentally benign,safety and low ***,the underexplored redox properties of organic materials and the narrow thermodynamic electrolysis window of water(1.23 V)hinder their wide ***,seeking suitable organic redox couples and aqueous electrolytes with a high output voltage is highly suggested for advancing the aqueous organic *** this work,the functionalized phenazine and nitroxyl radical with electron-donating and electron-withdrawing group exhibit redox potential of-0.88 V and 0.78 V ***,respectively,in“water-in-ionic liquid”supporting *** spectra reveal that the activity of water is largely suppressed in“water-in-ionic liquid”due to the enhanced hydrogen bond interactions between ionic liquid and water,enabling an electrochemical stability window above 3 V.“Water-in-ionic liquid”supporting electrolytes help to shift redox potential of nitroxyl radical and enable the redox activity of functionalized *** assembled aqueous RFB allows a theoretical cell voltage of 1.66 V and shows a practical discharge voltage of 1.5 V in the“water-in-ionic liquid”***,capacity retention of 99.91%per cycle is achieved over 500 charge/discharge cycles.A power density of 112 mW cm^(-2) is obtained at a current density of 30 mA cm^(-2).This work highlights the importance of rationally combining supporting electrolytes and organic molecules to achieve high-voltage aqueous RFBs.

关键词： Aqueous redoxﬂow batteries Water-in-ionic liquid electrolytes High-voltage aqueous batteries Organic redox-active materials