作者： Xie, Xiaoqing;Wang, Yanfei;Zhou, Weini;Chen, Can;Xiong, Zeng

期刊： Journal of Solid State Chemistry,2021年296:121966 ISSN：0022-4596

通讯作者： Yanfei Wang

作者机构： [Xiong, Zeng; Xie, Xiaoqing; Zhou, Weini; Chen, Can; Wang, Yanfei] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.

通讯机构： [Yanfei Wang] S;School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China

关键词： Chlorine compounds;Thermoanalysis;Wastewater treatment;X ray photoelectron spectroscopy;Adsorption capacities;Adsorption efficiency;Adsorption properties;BET specific surface area;Langmuir adsorption isotherms;Mesoporous structures;Pseudo-second-order kinetic models;Thermo dynamic analysis;Adsorption

摘要： A new synthetic method was designed to prepare poly (trimesoyl chloride-co-polyethyleneimine) (PEI-TMC). Characterization of PEI-TMC was investigated by FTIR, SEM, EDS, XPS, TGA, and BET. TGA test revealed that the PEI-TMC had excellent thermal stability. The BET specific surface area (4.74 ​m2 ​g−1) and pore diameter of about 9.44 ​nm indicated that PEI-TMC possessed a mesoporous structure. The adsorption behavior of U(VI) on the PEI-TMC was investigated. The thermodynamic analysis showed that the process of PEI-TMC adsorption of U(VI) was endothermic and spontaneous, and the adsorption efficiency was better at higher temperatures. The U(VI) sorption on PEI-TMC was conformed to the Langmuir adsorption isotherm and pseudo-second-order kinetic models. The adsorption mechanism of U(VI) with PEI-TMC was systematically elucidated by XPS and FTIR. Under the best condition, the maximum adsorption capacity of PEI-TMC could reach 212.8 ​mg ​g−1 ​by calculating the Langmuir isothermal model. It indicated that PEI-TMC was a potential adsorbent for the treatment of U(VI)-containing wastewater. © 2021

语种： 英文

作者： 熊曾;王延飞;谢晓庆

期刊： 山东化工,2021年50(02):54-57 ISSN：1008-021X

作者机构： 南华大学 化学化工学院,湖南 衡阳 421000;[熊曾; 王延飞; 谢晓庆] 南华大学

关键词： 磷腈聚合物;钍(Ⅳ)离子;微球;吸附

摘要： 采用一步沉淀聚合法制备聚（环三磷腈-co-3,3’-磺酰二苯胺）环交联微球,通过FTIR、SEM-EDS和XPS对PSD微球进行表征,研究了不同p H值、投加量、时间和温度对聚合物吸附钍离子的影响。实验数据表明,在pH值=4.0,时间为20 min,最大吸附量为163.1 mg/g,去除率为94.6%,且吸附进程符合拟二级动力学模型和Langmuir等温模型。

语种： 中文

作者： Luo, Yige;Yao, Liping;Gu, Wen;Xiao, Chengyi;Liao, Hailiang;...

期刊： Organic Electronics,2020年85:105895 ISSN：1566-1199

通讯作者： Wang, Yanfei;Li, Zhengke;Yue, Wan;Lv, Aifeng

作者机构： [Luo, Yige; Wang, Yanfei] Univ South China, Coll Chem & Chem Engn, Hengyang, Hunan, Peoples R China.;[Yue, Wan; Liao, Hailiang; Li, Zhengke; Yao, Liping; Li, ZK; Luo, Yige] Sun Yat Sen Univ, Key Lab Polymer Composite & Funct Mat, Minist Educ, Sch Mat Sci & Engn, Guangzhou 510275, Peoples R China.;[Gu, Wen] Shanghai Univ Engn Sci, Coll Chem & Chem Engn, 333 Longteng Rd, Shanghai 201620, Peoples R China.;[Xiao, Chengyi; Zhang, Lei] Beijing Univ Chem Technol, Coll Energy, Beijing 100029, Peoples R China.;[Ravva, Mahesh Kumar; Lv, Aifeng] SRM Univ AP, Dept Chem, Amaravati 522502, India.

通讯机构： [Wang, Yanfei] U;[Li, ZK; Yue, W; Lv, Aifeng] S;Univ South China, Coll Chem & Chem Engn, Hengyang, Hunan, Peoples R China.;Sun Yat Sen Univ, Key Lab Polymer Composite & Funct Mat, Minist Educ, Sch Mat Sci & Engn, Guangzhou 510275, Peoples R China.;SRM Univ AP, Dept Chem, Amaravati 522502, India.

关键词： Carrier transport;Halogenation;Ionization potential;Naphthalene;Organic polymers;Acid-catalyzed condensation;Ambipolar charge transports;Conjugated backbones;Electronic and optical properties;Halogen groups;P-type;Transport behavior;Optical properties

摘要： We systematically designed and developed three novel halogenated aza-octacene derivatives, which have the same π-conjugated backbone with different terminal halogen groups (F, Cl, Br). These aza-octacene derivatives are synthesized by acid-catalyzed condensation of naphthalene-bisisatin with 4,5-dihalo-1,2-phenylenediamine. The in-depth experimental and theoretical analyses on these molecules, using the non-halogenated system as a reference, allowed us to understand the impact of halogenation on electronic and optical properties. Both electronic affinity (EA) and ionization potential (IP) are increased through peripheral halogen substitution. Chlorination enhances the EA more effectively compared with fluorination and bromination. Micro-crystal devices based on the bromine substituted aza-octacene derivative show only p-type charge transport behavior. In contrast, the chlorinated and the fluorinated aza-octacene derivatives exhibit ambipolar charge transport. © 2020 Elsevier B.V.

语种： 英文

作者： Xie, Xiaoqing;Wang, Yanfei*;Xiong, Zeng;Li, Hongzheng;Yao, Chen

期刊： Journal of Radioanalytical and Nuclear Chemistry,2020年326(3):1867-1877 ISSN：0236-5731

通讯作者： Wang, Yanfei

作者机构： [Xiong, Zeng; Yao, Chen; Xie, Xiaoqing; Li, Hongzheng; Wang, Yanfei] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

关键词： microsphere;poly(cyclotriphosphazene co polyethyleneimine)microsphere;unclassified drug;uranium;adsorption;aqueous solution;Article;chemical structure;complex formation;energy dispersive X ray spectroscopy;Fourier transform infrared spectroscopy;pH;polymerization;precipitation;scanning electron microscopy;separation technique;surface property;synthesis;thermodynamics;transmission electron microscopy

摘要： Poly(cyclotriphosphazene-co-polyethyleneimine) microspheres with the solid structure were synthesized by precipitation polymerization method for the separation of highly toxic uranium(VI). The structure and morphology of the prepared microspheres were analyzed via FTIR, SEM–EDS, TEM and BET. The optimal adsorption conditions were also investigated, and the maximum adsorption capacity was 274.2mgg−1. The experimental results showed that the adsorption kinetics conformed to the pseudo-second-order kinetics and was in good agreement with the Langmuir adsorption isotherm model. Removal of uranium(VI) ions was achieved by the complexation between the amino groups on the adsorbent and uranyl ions. © 2020, Akadémiai Kiadó, Budapest, Hungary.

语种： 英文

作者： Ma, Zhili;Wang, Yanfei*;Luo, Yige;Xie, Xiaoqing;Xiong, Zeng

期刊： Journal of Radioanalytical and Nuclear Chemistry,2020年323(2):993-1002 ISSN：0236-5731

通讯作者： Wang, Yanfei

作者机构： [Xiong, Zeng; Xie, Xiaoqing; Wang, Yanfei; Luo, Yige; Ma, Zhili] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

关键词： microsphere;poly(cyclotriphosphazene co melamine) microsphere;thorium;unclassified drug;adsorption;aqueous solution;Article;concentration (parameter);environmental temperature;experimental study;heavy metal removal;kinetics;room temperature;synthesis;thermodynamics

摘要： Highly crosslinked organic–inorganic hybrid polymer poly(cyclotriphosphazene-co-melamine) microspheres (PZM) were synthesized by a simple method. The microspheres was characterized by FTIR, SEM and EDX. It was applied to eliminate thorium(IV) from aqueous solution under various conditions, i.e., pH, initial concentration, dosage and contact time. The experimental data were well-imitated via the pseudo-second-order kinetic model and its adsorption processes comply with the Langmuir isotherm model. Adsorption thermodynamic studies demonstrated that the adsorption process, in essence, was spontaneous and endothermic. Furthermore, the maximum experimental adsorption capacity was 98.6mgg−1 for initial thorium(IV) concentration 50mg L−1. When pH = 0.0, the thorium(IV) removal efficiency reached at 76.9%, which indicates that the adsorbent can also was used in a peracid environment. Adsorption behavior of thorium(IV) onto the microspheres were weakly affected via temperature, implying that adsorption would be done at room temperature. © 2019, Akadémiai Kiadó, Budapest, Hungary.

语种： 英文

作者： 姚陈;杜可杰;王延飞

期刊： 广东化工,2020年47(15):191-192 ISSN：1007-1865

作者机构： 南华大学化学化工学院,湖南衡阳421001;[姚陈; 王延飞; 杜可杰] 南华大学

关键词： 独立学院;化工原理;教学研究

摘要： 从本校独立学院化工原理课程的教学现状出发,阐述了目前化工原理课程教学过程中所面临的主要问题,提出引入案例教学法、图示教学法、项目教学法、视频动画和超星教学平台提高学生对课程学习的主动性和参与度,以此提升化工原理课程的教学效果。

语种： 中文

作者： Jiang, Zhipeng;Xie, Fan;Kang, Chuanhong;Wang, Yanfei*;Yuan, Long;...

期刊： Journal of Radioanalytical and Nuclear Chemistry,2019年321(3):895-905 ISSN：0236-5731

通讯作者： Wang, Yanfei

作者机构： [Xie, Fan; Jiang, Zhipeng; Wang, Yue; Yuan, Long; Wang, Yanfei; Kang, Chuanhong] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.

关键词： adsorbent;microsphere;poly(cyclotriphosphazene co 4,4' diaminodiphenyl ether);thorium;unclassified drug;adsorption kinetics;Article;concentration (parameter);contact time;energy dispersive X ray spectroscopy;Fourier transform infrared spectroscopy;pH;scanning electron microscopy;waste component removal;water pollution;X ray photoemission spectroscopy;zeta potential

摘要： Poly(cyclotriphosphazene-co-4,4′-diaminodiphenyl ether) microspheres (PZA) was based on hexachlorocyclotriphosphazene (HCCP) and 4,4′-diaminodiphenyl ether (ODA). It was synthesized via one-step precipitation method. The PZA microspheres were characterized by FT-IR, XPS, zeta potential and SEM/EDS. Through experimental research, PZA microspheres had the optimal adsorption performance with pH value 3.5, contact time of 60min, thorium(IV) ions concentration of 30mgL−1, and PZA microspheres of 10mg. The maximum adsorption capacity of PZA microspheres for thorium(IV) was 29.04mgg−1. The adsorption process could be described by the quasi-second order kinetic model and simulated by the Langmuir isotherm equation. © 2019, Akadémiai Kiadó, Budapest, Hungary.

语种： 英文

作者： 贺楚华;阳鹏飞;刘慧君;杜可杰;王延飞

期刊： 广州化工,2019年47(13):175-176+179 ISSN：1001-9677

作者机构： 南华大学化学化工学院,湖南 衡阳,421001;[王延飞; 杜可杰; 刘慧君; 贺楚华; 阳鹏飞] 南华大学

关键词： 萃取精馏;模拟;实验教学

摘要： 萃取精馏实验是化学工程与工艺专业一个重要的综合性实验,该实验进行汽液平衡测定,萃取精馏实验操作,应用Aspen Plus软件的Data Regression进行汽液平衡数据回归得到UNIQUAC方程的交互作用参数,应用Flash模块进行闪蒸计算得到乙醇-水相对挥发度,应用RadFrac模块优化萃取精馏工艺参数及萃取精馏操作过程模拟,理论计算与实验操作相结合,激发了学生的学习兴趣,加深了学生对实验原理、 萃取精馏过程的理解,提高了学生解决复杂工程问题的能力.

语种： 中文

作者： Ma, Zhili;Wang, Yanfei*;Liu, Mouwu;Luo, YiGe;Xie, Xiaoqing;...

期刊： Journal of Radioanalytical and Nuclear Chemistry,2019年321(3):1093-1107 ISSN：0236-5731

通讯作者： Wang, Yanfei

作者机构： [Xiong, Zeng; Liu, Mouwu; Xie, Xiaoqing; Wang, Yanfei; Luo, YiGe; Ma, Zhili] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

关键词： benzidine;poly(cyclotriphosphazene co 4,4' diaminodiphenyl ether);unclassified drug;uranium;adsorption;aqueous solution;Article;centrifugation;controlled study;cross linking;energy dispersive X ray spectroscopy;Fourier transform infrared spectroscopy;isotherm;kinetic parameters;kinetics;oscillation;reaction optimization;scanning electron microscopy;thermodynamics;X ray diffraction;X ray photoemission spectroscopy

摘要： Poly(cyclotriphosphazene-co-4,4′-diaminodiphenyl ether) crosslinked microspheres with active amino groups on the surface were prepared by one-step precipitation polymerization method. The as-prepared material were characterized by means of FTIR, XPS, XRD, EDS and SEM. The effects of pH, time of contact, dosage, initial concentration and temperature on the adsorption of uranium(VI) by the crosslinked microspheres were studied, and the adsorption mechanism was elucidated. Under the optimized adsorption conditions, the adsorption removal efficiency reached 97.03%. The experimental results fit the Langmuir isotherm model and adsorption processes comply with the pseudo-second-order kinetic model. Thermodynamic data revealed that the adsorption behavior of uranium(VI) on the microspheres was spontaneous and exothermic. © 2019, Akadémiai Kiadó, Budapest, Hungary.

语种： 英文

作者： 贺楚华;阳鹏飞;刘慧君;王延飞;杜可杰

期刊： 化工时刊,2019年33(07):44-45 ISSN：1002-154X

作者机构： 南华大学化学化工学院,湖南衡阳,421001;[杜可杰; 王延飞; 刘慧君; 贺楚华; 阳鹏飞] 南华大学

关键词： 逆流萃取;流程模拟

摘要： 在逆流萃取模拟实验中,先运用Aspen Plus软件进行模拟计算,然后进行实验操作,再对操作过程进行模拟计算,将实验操作与理论计算相结合,激发了学生的学习兴趣,加深了学生对实验基本原理的理解,提高了学生的动手能力和理论计算能力.

语种： 中文

作者： Liu, Mouwu;Wang, Yanfei*;Ma, Zhili;Luo, Yige

期刊： Journal of Radioanalytical and Nuclear Chemistry,2019年319(1):279-288 ISSN：0236-5731

通讯作者： Wang, Yanfei

作者机构： [Liu, Mouwu; Wang, Yanfei; Luo, Yige; Ma, Zhili] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.

关键词： microsphere;poly(cyclotriphosphazene co phloroglucinol);unclassified drug;uranium;algorithm;aqueous solution;Article;calculation;chemical structure;isotherm;kinetics;polymerization;precipitation;solid phase extraction;thermodynamics;zeta potential

摘要： Poly(cyclotriphosphazene-co-phloroglucinol) (PCPP) microspheres, a new solid phase extraction for extracting uranium(VI), synthesized via one-pot precipitation copolymerization. The PCPP microspheres were characterized by FT-IR, SEM/EDS, zeta potential and N 2 adsorption/desorption isotherms. Through the extraction experiment to evaluate the extraction behavior of the PCPP microspheres for uranium(VI). The extractant can achieve the optimal effect under the conditions of contact time with 60min, pH = 3.5, initial concentration 100mgL −1 and extractant dosage 0.70gL −1 . The extraction behavior obeyed with the pseudo second-order model and Langmuir isotherm model. © 2018, Akadémiai Kiadó, Budapest, Hungary.

语种： 英文

作者： 周雄辉;王延飞;黄义平;吴小明;兰秋文

期刊： 湖南有色金属,2019年35(2):61-64 ISSN：1003-5540

作者机构： 南华大学化学化工学院;五矿铜业（湖南）有限公司;[黄义平] 湖南有色金属控股集团有限公司;[吴小明; 兰秋文] 五矿铜业(湖南)有限公司;[王延飞; 周雄辉] 南华大学

关键词： 生命周期评价;冶炼烟气;硫酸

摘要： 采用生命周期评价的方法,对铜冶炼企业应用冶炼烟气制98%工业硫酸,以冶炼烟气制酸的主生产线:铜精矿的开采及运输、配料、氧气底吹炉熔炼、P-S转炉吹炼以及制酸阶段作为研究对象,定量分析了冶炼烟气制硫酸整个生命周期的资源能源投入、环境负荷等问题,从而找出在冶炼烟气制硫酸生命周期中的主要环境问题,为烟气制硫酸生产改进生产技术、提高绿色生产水平提供数据支持。

语种： 中文

作者： 贺楚华;阳鹏飞;刘慧君;王延飞;杜可杰

期刊： 化工时刊,2018年32(8):46-47+52 ISSN：1002-154X

作者机构： 南华大学 化学化工学院,湖南 衡阳,421001;[杜可杰; 王延飞; 刘慧君; 贺楚华; 阳鹏飞] 南华大学

关键词： 化工分离工程;多组分精馏;严格计算

摘要： 在化工分离工程教学中,利用Excel软件进行多组分精馏严格计算,快捷、简便、准确,加深了学生对化工分离工程中公式、概念的理解,提高了学生解决复杂工程问题的能力。

语种： 中文

作者： Tan, Juan;Wang, Yanfei*;Liu, Mouwu;Liu, Jing

期刊： INDUSTRIAL LUBRICATION AND TRIBOLOGY,2018年70(7):1258-1267 ISSN：0036-8792

通讯作者： Wang, Yanfei

作者机构： [Tan, Juan; Liu, Mouwu; Liu, Jing] Univ South China, Hengyang, Peoples R China.;[Wang, Yanfei] Univ South China, Dept Chem Engn, Hengyang, Hunan, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Dept Chem Engn, Hengyang, Hunan, Peoples R China.

关键词： Tribological properties;Overbased sulfonates;Rapeseed oil;Thiadiazole derivatives

摘要： Purpose The purpose of this paper is to study the tribological properties of a thiazole derivatives (T561), overbased alkyl benzene calcium sulfonate (T106A) compounded with T561 and overbased alkyl benzene magnesium sulfonate (T107) compounded with T561 in rapeseed oil (RSO). Design/methodology/approach A four-ball machine was used to evaluate the tribological properties of each compound and their combinations with T561 in RSO. Scanning electron microscopy, EDX and X-ray photoelectron spectroscopy were applied to analyze the tribofilm formed on the worn surfaces. Findings Results of tribotesting demonstrated that synergistic effects exist between the overbased sulfonates, T106A and T107, and the thiazole derivative, T561. The texts of tribofilm indicated that iron sulfide and iron oxides exist in T561 single agent lubricant film and two composite additives lubricant film, and no sulfates were detected. It suggested that the addition of alkyl benzene sulfonate did not hinder the formation of iron sulfides and iron oxides. Meanwhile, CaSO4 (MgSO4) and CaCO3 (MgCO3) were detected on the worn surface of the composite additives, which were not detected on the single agent friction surface. Originality/value A tribofilm mainly contains CaSO4 (MgSO4) and CaCO3 (MgCO3) formed on the worn surfaces, which is responsible for excellent extreme pressure and anti-wear properties of the compound agents because of their high melting point and high shear stress.

语种： 英文

作者： Tan, Juan;Wang, Yanfei*;Liu, Na;Liu, Mouwu

期刊： Journal of Radioanalytical and Nuclear Chemistry,2018年315(2):119-126 ISSN：0236-5731

通讯作者： Wang, Yanfei

作者机构： [Tan, Juan; Liu, Mouwu; Liu, Na; Wang, Yanfei] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

关键词： adsorbent;phenyl group;tetraphenylimidodiphosphinate;unclassified drug;uranium;water;adsorption;aqueous solution;Article;chemical structure;concentration (parameters);isotherm;kinetics;pH;scanning electron microscopy;surface property

摘要： The adsorption of uranium (VI) using tetraphenylimidodiphosphinate (Htpip) was studied. Factors of affecting sorption efficiency have been investigated and results showed the adsorption of uranium (VI) was equilibrium at pH 4.5, time 20min, adsorbent dosage 0.005g and initial concentration 50mgL−1 reaching 99.86mgg−1 of adsorption capacity and 99.86% of removal efficiency. Additionally, the interfering ions studies showed that the adsorbent possessed excellent adsorption selectivity of uranium (VI). The surface morphology of Htpip was investigated by SEM. The adsorption process of uranium (VI) onto Htpip fit the pseudo-second-order kinetic model and the Freundlich isotherm model very well. © 2018, Akadémiai Kiadó, Budapest, Hungary.

语种： 英文

作者： Tan, Juan;Wang, Yanfei*;Liu, Mouwu;He, Chuhua

期刊： Journal of Radioanalytical and Nuclear Chemistry,2017年314(3):2243-2252 ISSN：0236-5731

通讯作者： Wang, Yanfei

作者机构： [Tan, Juan; Liu, Mouwu; He, Chuhua; Wang, Yanfei] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.

关键词： microsphere;phenol derivative;poly(cyclotriphosphazene co 4,4' sulfonyldiphenol);thorium;unclassified drug;adsorption;aqueous solution;Article;chemical structure;isotherm;mathematical analysis;pH;polymerization;reliability;scanning electron microscopy;surface property;synthesis;temperature dependence;thermodynamics

摘要： The specialized poly(cyclotriphosphazene-co-4,4′-sulfonyldiphenol) (PZS) microspheres were prepared via a reliable and simple precipitation polymerization method and used adsorbent for the removal of thorium (Th) from aqueous solution. The PZS microspheres were characterized by FT-IR, XPS and SEM. The variables influencing the adsorption capacity were investigated. Adsorption experimental data showed thorium adsorption was equilibrium at time 60min, pH 3.5, adsorbent dosage 1.0gL−1 and initial concentration 25mg L−1, and the adsorption capacity reached to 17.30mgg−1. The experimental data followed the pseudo-second-order kinetic model and equilibrium data fit the Langmuir isotherm model very well. © 2017, Akadémiai Kiadó, Budapest, Hungary.

语种： 英文

作者： 张灵芝;王延飞;谭娟;刘谋武

期刊： 山东化工,2017年46(7):220-222 ISSN：1008-021X

作者机构： 南华大学化学化工学院,湖南衡阳,421001;[王延飞; 刘谋武; 谭娟; 张灵芝] 南华大学

关键词： 二(二苯基磷酰)胺;吸附

摘要： 研究二（二苯基磷酰）胺（Htpip）对Cr（Ⅲ）的吸附性能,探究一定的p H值、吸附时间下,Htpip的用量、Cr（Ⅲ）的初始浓度对吸附的影响。根据对材料的FT-IR、SEM等表征,结合吸附实验结果探讨吸附机理,表明亚氨基和磷酸在吸附过程中发挥了重要作用。实验结果显示,Cr（Ⅲ）吸附容量随吸附剂投加量的增加而减少,随离子初始浓度的增大而增加。Htpip对Cr（Ⅲ）的吸附行为遵循准二级动力学方程,吸附过程符合Langmuir方程,饱和吸附量达到58.39mg·g^-1。

语种： 中文

作者： Hu, Xueping;Tang, Pengfei;Wang, Yanfei*;Liu, Jing

期刊： INDUSTRIAL LUBRICATION AND TRIBOLOGY,2017年69(5):621-626 ISSN：0036-8792

通讯作者： Wang, Yanfei

作者机构： [Hu, Xueping; Liu, Jing; Wang, Yanfei] Univ South China, Dept Chem & Chem Engn, Hengyang, Peoples R China.;[Tang, Pengfei] Hengyang Jinhua Sci & Technol Grp, Hengyang, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Dept Chem & Chem Engn, Hengyang, Peoples R China.

关键词： Additives;Environment;Friction coefficient;High temperature;Environmental health and safety;Brucite;Lubricant;Water-based

摘要： <jats:sec> <jats:title content-type="abstract-subheading">Purpose</jats:title> <jats:p>Water-based graphite lubricants have good lubricity in the process of metal forming, especially for hot-rolling seamless pipe. Although the use of water as a working fluid system instead of conventional mineral oil has many advantages for the fuel consumption, post cleaning and a new type of lubricant, the graphite contaminated the machine and workers for its physical properties. From the global environmental protection viewpoint, it is urgent to develop a kind of benign material.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Design/methodology/approach</jats:title> <jats:p>Magnesium hydroxide which has the average particle size of 10 μm was chosen as a base material without further modification and pretreatments. On the HT-1000 high-temperature tribometer, the influence of temperature and lubricant materials on the friction coefficient was studied. The tribological performance at 900<jats:sup>°</jats:sup>C provided evidence under high temperature for exploring a new lubricant material.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Findings</jats:title> <jats:p>Tap water-based brucite lubricant will open a new chapter in the industrial lubrication, effectively avoiding many unfavorable factors caused by graphite lubrication, such as conductivity, pollution and energy loss. Meanwhile, it expanded the application of brucite as flame-retardant agent, catalyst, water treatment agent and so on.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Originality/value</jats:title> <jats:p>It is a new and environmental lubricant to tap water-based brucite lubricant. And specially, the preparation process of lubricant is simple and economical.</jats:p> </jats:sec>

语种： 英文

作者： 杜可杰;赵玉宝;刘华;王延飞;贺楚华;...

期刊： 广东化工,2016年43(5):191,193 ISSN：1007-1865

作者机构： 南华大学化学化工学院,湖南衡阳,421001;南华大学城市建设学院,湖南衡阳,421001;[贺楚华; 王延飞; 杜可杰; 阳鹏飞; 赵玉宝; 刘华] 南华大学

关键词： 工程化学;理论教学;实践教学;教学改革

摘要： 工程化学是我校土木类专业学生的基础课程,帮助该专业学生进一步了解化学与社会、能源、环境、安全等知识。针对该课程仅课时少、知识面广的情况,对本课程教学内容、教学方法进行了深入的研究与改革,并对课程实践内容进行了合理的安排,使工程化学教学质量得到了质的提升。

语种： 中文

作者： Liu, Na;Wang, Yanfei*;He, Chuhua

期刊： Journal of Radioanalytical and Nuclear Chemistry,2016年308(2):393-401 ISSN：0236-5731

通讯作者： Wang, Yanfei

作者机构： [He, Chuhua; Liu, Na; Wang, Yanfei] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.

通讯机构： [Wang, Yanfei] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.

关键词： phosphate;tetraphenylimidodiphosphinate;thorium;unclassified drug;adsorption kinetics;aqueous solution;Article;chemical structure;concentration (parameters);controlled study;infrared spectroscopy;pH measurement;process optimization;scanning electron microscopy;separation technique;solid phase extraction

摘要： A simple and reliable method for solid phase extraction of thorium using tetraphenylimidodiphosphinate is presented. The solid phase extraction process was optimized at equilibrium time 3h, pH=4.5, initial concentration 30mgL−1 and extractant dosage 0.01g with 98.95% of removal efficiency and 29.68mgg−1 of adsorption capacity. The interfering ions experiments indicated that it had almost no effect on thorium adsorption. Kinetics data follow the pseudo-first-order model and equilibrium data agreed with the Langmuir isotherm model very well. FT-IR analysis indicated that imino group and phosphoryl acted as the significant roles in the solid phase extraction process. © 2015, Akadémiai Kiadó, Budapest, Hungary.

语种： 英文