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10篇 您的检索式:作者名="Mingyou He"
    题名 作者 年代 出处 被引量
1Sol-gel preparation and characterization of Li_(1.3)Al_(0.3)Ti_(1.7)(PO_4)_3 sintered with flux of LiBO_2显示文摘Li1.3Al0.3Ti1.7(PO4)3 pellets sintered with different mole fractions of LiBO2 were prepared by sol-gel method.The structural identification,surface morphology,ionic conductivity,and activation energy of the pellets were studied by X-ray diffraction,scanning electron microscopy,and electrochemical impedance spectroscopy.The results show that all the Li1.3Al0.3Ti1.7(PO4)3 pellets sintered with different mole fractions of LiBO2 have similar X-ray diffraction patterns.The sintered pellet becomes denser and the boundary and corner of the particles become illegible with the increase of LiBO2.Among the Li1.3Al0.3Ti1.7(PO3)4 pellets sintered with different mole fractions of LiBO2,the one sintered with 1 mol% LiBO2 shows the highest ionic conductivity of 3.95×10-4 S.cm-1 and the lowest activation energy of 0.2469 eV.WU Xianming,LI Runxiu,CHEN Shang,HE Zeqiang,and MA Mingyou College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China 2010Rare Metals2010,29,5:3
2State of rare earth elements in the rare earth deposits of Northwest Guizhou,China显示文摘We studied the states of rare earth elements in ore of the Xianglushan rare earth deposit. Rare earth ore samples were tested and examined by scanning electron microscope, electron probe, and chemical leaching. No independent rare earth minerals were detected by scanning electron microscope. Elements detected by the electronic probe for the in situ micro-zone of the sample included: O,Al, Si, Ca, Mg, Fe, Ti, K, Na, S, Cl, C, Cu, Cr, V, and Pt.Rare earth elements were not detected by electron probe.(NH_4)_2 SO_4,(NH_4)Cl, NaCl, and H_2 SO_4 were used as reagents in chemical leaching experiments that easily leached out rare earth elements under the action of 10%reagent, indicating that the rare earth elements in ore are mainly in the ionic state rather than present as rare earth minerals.Peinan He Mingyou He Hai Zhang 2018Acta Geochimica2018,37,6:3
3Ore prospecting model and targets for the Dashuigou tellurium deposit, Sichuan Province, China显示文摘The Dashuigou tellurium(Te) deposit in Shimian city, Sichuan Province is the only known independent Te ore deposit in China. Samples were collected by1/50,000 stream sediment survey and analyzed by inductively coupled plasma–mass spectrometry, X-ray fluorescence spectrometry, emission spectrometry, and atomic absorption spectroscopy. An ore prospecting model for the Dashuigou Te deposit was then established. In the Dashuigou area, bismuth(Bi), Te, and gold(Au) concentrations in stream sediment samples displayed weak-positive anomalies, while silver(Ag) displayed a weaknegative anomaly. Bi, Te, Ag, and Au anomalies are regarded as indicators of Te deposits; the greater the ratio of Te+Bi/Au+Ag, the larger the possibility of an independent tellurobismuthite deposit. The ratio calculated from our samples is 7.288. Five locations were identified for prospecting for Te minerals by this model, including the northern part of the Dashuigou Te deposit, Majiagou,Tizigou, southeastern Miaoping, and northern Baishuihe.These five regions are within the Dashuigou dome anticline, the exposed strata of which are controlled by tracing the tensile shear fracture; the metallogenic geological conditions and geochemical characteristics are the same as those of the known Dashuigou Te deposit. Already, Te–Bi veins have been found in some of these areas.Quanjiang Zhang Yingping Liu Mingyou He Jun Bai Wei Xu Cong Zhao 2018Acta Geochimica2018,37,4:2
4LiMn_2O_4 thin films derived by rapid thermal annealing and their performance as cathode materials for Li ion battery显示文摘The LiMn2O4 thin film as a cathode material was prepared through solution deposition followed by rapid thermal annealing (RTA). The phase identification and the study of surface morphology were carried out by X-ray diffraction and scanning electron microscopy. Electrochemical properties were examined by cyclic voltammetry, galvanostatic charge-discharge experiments, and electrochemical impedance spectroscopy. The results show that the film prepared by this method is homogeneous, dense, and crack-free. The thin film has a capacity of 38 μAh/(cm2?μm) with the capacity loss of 0.037% per cycle after being cycled for 100 times. The average diffusion coefficient for lithium ions in the RTA-derived LiMn2O4 thin film is 1 × 10?10 cm2?s?1.WU Xianming HE Zeqiang MA Mingyou XIAO Zhuobing XU Mingfei 2006Rare Metals2006,25,6:2
5Synthesis and elec- trochemical properties of SnO2-CuO nanocomtposite powders 显示文摘Ma Mingyou He Zeqiang Xiao Zhuobing 2006Trans Nonferrous Met S China2006,16,:1
6Effect of magnesium hydroxide as cigarette paper filler to reduce cigarette smoke toxicity显示文摘The use of magnesium hydroxide(Mg(OH)_(2))was proposed as a filler to replace part of the calcium carbonate(CaCO_(3))in cigarette paper and reduce the toxicity of the smoke from cigarettes.Physical property changes and smoke reducing ability of this possible substitution were effectively studied.The results showed that adding 10%Mg(OH)_(2) could meet the requirements of the physical property of the cigarette paper.Moreover,with the addition of Mg(OH)2 as a filler in the cigarette paper,the pyrolysis temperature of the cigarette paper decreased,while the porosity and specific surface area increased.As a result,the main-stream smoke had a lower smoke total particle matter(STMP),tar,nicotine and carbon monoxide content,and the side-stream smoke also had a lower STMP.Xian Lu Mingyou Liu Zhibin He 2016Journal of Bioresources and Bioproducts2016,1,3:1
7Recovery of calcium carbonate waste as paper filler in the causticizing process of bamboo kraft pulping显示文摘In this paper, calcium carbonate waste was recovered as paper filler from the causticizing process of bamboo kraft pulping. The effects of the causticizing process parameters on the filler qualities were investigated, in terms of the whiteness, tear strength, tensile strength and ash content of the filled paper. To investigate the effect of silica content on the qualities of the resultant calcium carbonate filler, the green liquor was desiliconized with aluminum salt modified bentonite prior to the causticizing process to obtain calcium carbonate of various silicon contents, particle size and brightness, and different crystal morphology. It was found that the ionic strength and silicate concentration were the two key factors in affecting the size and shape of the calcium carbonate particles formed in the causticizing process.Tian He Mingyou Liu 2017Journal of Bioresources and Bioproducts2017,2,2:0
8Comparative Study of LiMn2O4 Thin Films Heat-treated by Conventional and Rapid Thermal Annealing显示文摘阴极材料 LiMn_2O_4 薄电影被常规热退火跟随的答案免职(CTA )(RTA ) 并且快速的热退火作为开始材料用醋酸锂和乙酸锰准备。阶段和表面形态学鉴定被 X 光检查衍射和扫描电子显微镜学做。薄电影的电气化学的性质被循环伏安法,费用分泌物实验,电气化学的阻抗光谱学和潜在的步骤技术执行。结果证明两部薄电影同类、没有裂缝。与 CTA 相比导出薄电影,有更小的谷物的导出的缩放的 RTA 更光滑、稠密。CTA 和 RTA 导出 LiMn_2O_4 薄电影交付 34.5 muAh/(cm^2 中心点妈妈) 和 38 muAh/(cm^2 中心点妈妈) 的能力并且在分别地被骑车 100 次以后每周期显示出 0.050% 和 0.037% 的能力损失。在 CTA 的锂离子的散开系数导出 LiMn_2O_4 thin-filmelectrode 是 4.59 X 10 ^(-11) cm^2/s,和在 RTA 的锂离子的导出一个是 3.86 X10^(-11) cm^2/s。Xianming WU Mingyou MA Zhuobing XIAO Zeqiang HE Jianben LIU Mingfei XU 2006Journal of Materials Science & Technology2006,22,3:0
9Fe/C micro electrolysis and Fenton oxidation process for the removal of recalcitrant colored pollutants from mid-stage pulping effluent显示文摘The pulp and paper industry produces a large amount of colored effluent in the pulping,bleaching,and papermaking processes.The wastewater from the pulp washing and bleaching stages is also known as mid-stage pulping effluent,which is difficult to treat due to its toxicity and dark dolor.This paper reports a novel Fe/C micro-electrolysis process for the treatment of the mid-stage pulping effluent.Results show that this process is effective in removing the color under optimal reaction conditions.Scanning electron microscopy(SEM)and Fourier transform infrared spectroscopy(FTIR)analyses indicate that the colored pollutants were removed from the wastewater in the Fe/C micro-electrolysis by adsorption,collection and filtration mechanisms.The Fe2+ions produced in the micro-electrolysis process functioned as Fenton’s reagents with H2O2 in the follow-up oxidation stage,which enhanced the removal of chemical oxygen demand(COD)and color.Mingyou Liu Lu Wang Xianying Xiao Zhibin He 2018Journal of Bioresources and Bioproducts2018,3,3:0
10Oxidative thiocyanation of allylic alcohols:an easy access to allylic thiocyanates with K_(2)S_(2)O_(8) and NH_(4)SCN显示文摘A practical method for the synthesis of allylic thioacyanates from allylic alcohols was disclosed employing K_(2)S_(2)O_(8) as the oxidant and NH_(4)SCN as the thiocyanate source.Without introducing a leaving group in advance,a series of disubstituted and monosubstituted allylic thiocyanate compounds were obtained in moderate to good yields.This transition metal-free method features mild reaction conditions,broad sub-strate scope and operational simplicity.The potential application of this method was demonstrated by some derivatization reactions of the product and mechanistic investigation indicated that a radical process is involved.Keyuan Zhang Tianbing Liang Yulong Wang Chonglong He Mingyou Hu Xin-Hua Duan Le Liu 2022Organic Chemistry Frontiers2022,9,4:0
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