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Journal of Materials Science & Technology 2010年第10期26卷 957-960页

作者： Ying Li changzhen wang Zhongli Zhang Jiangxin wang College of Materials and Metallurgy Northeastern University Shenyang 110004 China

The steel contains a small amount of hydrogen which will escape during the heat *** hydrogen pressure in 16MnRE steel was investigated with a hydrogen sensor,which used SrCe0.95Yb0.05O3-α proton conductor as a solid electrolyte,YHx＋YH2z as a solid state reference electrode and Ni wire as electrode constructing a hydrogen concentration cell,shown as Ni｜YHx＋YH2z ｜SrCe0.95Yb0.05O3-α ｜[H] steel ｜*** response time of sensor is less than *** relational expression of hydrogen partial pressure with temperatures was determined using two shape proton *** results showed the regularity in experimental temperature range,and the hydrogen partial pressure increased as its temperature was raised.

关键词： Hydrogen sensor Proton conductor Solid electrolyte

Comparative Studies of Non-noble Metal Modified Mesoporous M-Ni-CaO-ZrO2 （M=Fe, Co, Cu） Catalysts for Simulated Biogas Dry Reforming

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Chinese Journal of Chemistry 2017年第1期35卷 113-120页

作者： changzhen wang Yin Zhang Yongzhao wang Yongxiang Zhao Engineering Research Center of Ministry of Education for Fine Chemicals Shanxi University Taiyuan Shanxi 030006 China

The present work is aimed to improve the performance of Ni-based catalysts for biogas dry reforming by adding a second non-noble metal （Fe, Co, Cu） into a previously studied mesoporous Ni-CaO-ZrO2 nanocomposite. Biogas was simulated with equivalent methane and carbon dioxide for the dry reforming reaction. X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS）, N2 adsorption, temperature-programmed reduction （TPR）, thermogravi- metric analysis （TGA）, and transmission electron microscopy （TEM） measurements were taken to characterize the structural and textual properties of the bimetallic catalysts as well as the accumulated carbon deposition. The addition of Fe leads to a less ordering growth of mesopores of Fe-Ni-CaO-ZrO2 sample, and the existence of Cu results in a relatively larger portion of free NiO in Cu-Ni-CaO-ZrO2. Compared with Fe and Cu, the presence of Co could efficiently form a beneficial dual metal effect and enhance the strong metal support interaction between Ni and CaO-ZrO2, thus enhancing the activity and stability of the catalyst in biogas dry reforming reaction.

关键词： nickel catalyst non-noble metal modified bimetallic catalyst biogas dry reforming carbon deposition

Variation of optimum yttrium doping concentrations of perovskite type proton conductors BaZrl_xYxO3-~ （0~~~_0.3） with temperature

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Journal of Rare Earths 2013年第10期31卷 1017-1022页

作者： Yushi DING (丁玉石) Ying LI (厉英) Wenzhuo DENG (邓文卓) Wenlong HUANG (黄文龙) changzhen wang (王常珍) School of Materials and Metallurgy Northeastern University Shenyang 110819 China

A solid state reaction method was used to prepare the perovskite-structured compounds BaZrl-xYxO3-a （x=0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3）. The X-ray diffraction （XRD） pattern indicated that the target perovsldte phases were obtained. With increasing Y con- centration the unit cell parameters of BaZrl-xYxO3-a samples were expanded, and Y doping became more difficult. However, high synthesis temperature is helpful to promote Y doping. The SEM results showed that the samples exhibited poor sinterability with in- creasing Y-doping content. Thermal gravimetric （TG） curves analysis showed the more mass decreasing of BaZrl-xYxO3-a （0≤x≤0.3） samples at high temperature with more Y doping and more proton introducing. The electrochemical impedance spectra （EIS） of specimens showed that conductivities of BaZrl_xYxO3（0≤x≤0.3） increased with increasing temperature from 300 to 900 ℃ in wet air. At 900 ℃, the conductivity of BaZrl-xYxO3-a （0≤x≤0.3） first increased with increasing doped amount of Y, and reached the high- est value of 1.07x 104 S/cm when x was 0.2, then decreased gradually with further increasing Y content. At 600 ℃, BaZr0.75Y0.2503-a displayed the highest conductivity, while the conductivity of ***.303-a was the highest at 300 ℃. The results indicated that there should be an optimum Y doping concentration yielding the highest conductivity at a constant temperature, and the optimum Y doping concentration should increase in the humidity atmosphere as the temperature decreases. So increasing the Y-doping concen- tration is helpful to improve the conductivities of BaZrl-xYxO3-a materials at low temperature.

关键词： BaZrl-xYx03-a proton conductors conductivity optimum doping concentration EIS rare earths

高温质子导体Ba_3Ca_(1.18)Nb_(1.82)O_(9-δ)的制备和表征

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金属学报 2009年第3期45卷 345-350页

作者：王东刘春明王常珍东北大学材料与冶金学院沈阳110004

对经6与10h球磨的BaCO_3,CaCO_3和Nb_2O_5的混合粉体进行冷压成型,1400℃/10h高温烧结后,获得了不同致密度的Ba_3Ca_(1.18)Nb_(1.82)O_(9-δ)样品,激光粒度、DSC-TG和SEM分析表明,适度延长球磨时间,可降低合成温度,细化粉体粒度,提高样... 详细信息

对经6与10h球磨的BaCO_3,CaCO_3和Nb_2O_5的混合粉体进行冷压成型,1400℃/10h高温烧结后,获得了不同致密度的Ba_3Ca_(1.18)Nb_(1.82)O_(9-δ)样品,激光粒度、DSC-TG和SEM分析表明,适度延长球磨时间,可降低合成温度,细化粉体粒度,提高样品的致密度.电化学阻抗谱测试表明,在300—800℃温度范围内,6和10h球磨粉体制备的烧结样品总电导率与温度的关系符合Arrhenius方程,电导激活能分别为O.84和0.68eV.提高样品的致密度是降低电导激活能、提高中低温(300—600℃)导电性能的有效途径.

关键词：高温质子导体 Ba3Ca1.18Nb1.82O9-δ 球磨致密度导电性

ACTIVITIES OF CaO AND La_2O_3 IN LIQUID CaO-SiO_2-La_2O_3 SLAGS AND SLAG STRUCTURE

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Acta Metallurgica Sinica(English Letters) 1989年第7期2卷 1-7页

作者： WU Jianzhong wang changzhen Northeast University of Technology,Shenyang,China Professor,Dept.Non-ferrous Metallurgy,Northeast University of Technology,Shengyang,China

The activity of CaO and LaOin the liquid ternary slay CaO-SiO-LaOhas been de-termined by equilibrating Sn with the slag phase in a graphite crucible under l arm of CO *** experimental results ,showed that the activity of CaO and LaOchanges slowlywhile the ratio of mole fraction.x/x,is less than *** varies sharply while the ra-rio increases from 1 to *** addition,by equilibrating Sn with the binary slagBO-LaOsaturated witlt solid LaOat three different temperatures,the relation betweenIgγ~0 and I/T is determined as follows:Igγ~0=-20400/T+11.37(1500-1600C)A random network model of molten silicate structure was applied to *** was found that the experimentally determined activity-composition curve of CaO arequalitatively reproduced by the curves calculated with the model,but the curves of LaOareconsiderahly different from the calculated *** implies that the model used is over-simpli-fied and that the difference in interaction energy between the metal cations of different valenceand silicate anions should be considered.

关键词： CaO-SiO_2-La_2O_3 ternary system slag slag structure activity

Study on Thermodynamics of Materials and Chemical Sensors using Solid Electrolytes e. m. f. Method

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Study on Thermodynamics of Materials and Chemical Sensors us...

CaZr_(0．9)In_(0．1)O_(3-α)高温质子导体管的制备及性质表征

第十二届中国固态离子学学术会议

作者： wang changzhen (Northeastern University. Shenyang. 110004)

研究了CaZrO3(掺杂Y2O3),Bi2O3-Y2O3,La-βAl2O3,Ca-βAl2O3,LaF3(掺杂CaF2),YF3(掺杂CaF2)Sr1-xLaxF2+x等10种固体电解质的制备和性质研究。用固体电解质电动势方法研究了Y2O3·Cr2O3,3Y2O3·5Al2O3,Bi2O3-Y2O3,La(Ce)Ni5,SnO2-x,La(FexAl1-x)13,YFe12-xVx等21种材料的热力学性质。研究了La,Y,Ca,F,Cr,H等化学传感器,讨论了基本原理和实验所给予的注意事项。所发表的文章列于参考文献。

关键词：固体电解质热力学原电池化学传感器

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金属学报 2008年第2期44卷 177-182页

作者：王东史苍际刘春明王常珍东北大学材料与冶金学院沈阳110004

采用固相反应法合成了高温质子导体CaZr_(0.9)In_(0.1)O_(3-α).XRD分析表明,混合粉体经1673 K×10 h煅烧后形成了预期的钙钛矿结构的CaZrO_3基固溶体.激光粒度分析表明,煅烧后的粉体粒度呈双峰分布,主峰对应0.389-0.584μm,次峰对应3.4... 详细信息

采用固相反应法合成了高温质子导体CaZr_(0.9)In_(0.1)O_(3-α).XRD分析表明,混合粉体经1673 K×10 h煅烧后形成了预期的钙钛矿结构的CaZrO_3基固溶体.激光粒度分析表明,煅烧后的粉体粒度呈双峰分布,主峰对应0.389-0.584μm,次峰对应3.409-5.867μm,平均粒径为1.878μm.采用热压铸成型并经1823 K×8 h烧结的质子导体管密度为理论密度的97.44%,SEM断口形貌显示其颗粒尺寸在1—3μm之间,结构致密.EDS和电感耦合等离子发射光谱分析(ICP- AES)表明,烧结后的材料中In含量降低.DSC-TG分析表明这是由于在烧结过程中部分In_2O_3升华和离解造成的.CaZr_(0.9)In_(0.1)O_(3-α)在空气氛中931-1300 K范围内的电导率为9.10×10^(-5)-1.21×10^(-2)S/xm,略低于氢气氛下的测定值,但高于CaZr_(097)In_(0.03)O_(3-α)在空气中的测定值,电导激活能为1.47 eV,符合理论预测.

关键词： CaZrO3 In掺杂高温质子导体交流阻抗谱电导率

BaCe_(1-x)Y_xO_(3-α)及BaCe_(0．9)Sm_(0．1)O_(3-α)质子导体的表征及组成氢泵对铝熔体的脱氢

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金属学报 2007年第11期43卷 1228-1232页

作者：王东范建华刘春明王常珍东北大学材料与冶金学院沈阳110004

采用固相合成法制备了BaCe_(0.9)Y_(0.1)O_(3-α),BaCe_(0.85)Y_(0.15)O_(3-α)和BaCe_(0.9)Sm_(0.1)O_(3-α)质子导体.XRD结果表明,掺0.1Y的粉体形成了单一的钙钛矿型BaCeO_3结构,掺0.15Y和0.1Sm的粉体形成了主相为钙钛矿结构的固溶体;激光粒度分析表明,煅烧后的粉体平均粒径增大,粒度分布比较集中;DSC-TG分析表明,质子导体的合成温度约1360℃;SEM结果显示,质子导体由分布均匀的大小两种晶粒和气孔构成;BaCe_(0.9)Y_(0.1)O_(3-α)和BaCe_(0.9)Sm_(0.1)O_(3-α)脱氢电池对铝液的脱氢结果表明,脱氢电流随着铝液温度的升高,水蒸气分压增大或外加电压增加而分别增大;用自制的CaZr_(0.9)In_(0.1)O_(3-α)氢传感器测得铝液温度为780℃、水蒸气分压分别为4122.8和4366.0Pa时,100g铝液中的氢含量分别为0.0536和0.0445 mL.

关键词： BaCe1-xYxO3-α BaCe0.9Sm0.1O3-α 质子导体氢泵 Al熔体脱氢

肝脏免疫调控蛋白LSECtin-CRD突变体可溶性表达及其活性分析

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中华微生物学和免疫学杂志 2020年第11期40卷 813-817页

作者：董国福王长振军事科学院军事医学研究院辐射医学研究所北京100850

目的构建肝脏及淋巴结窦内皮细胞C型凝集素糖基识别结构域(LSECtin-CRD)双半胱氨酸(Cys)突变体原核表达载体,获得LSECtin-CRD突变体蛋白,并鉴定其生物学活性。方法基于LSECtin-CRD的三维结构模型选择突变位点;通过重叠延伸PCR(SOE-PCR)... 详细信息

目的构建肝脏及淋巴结窦内皮细胞C型凝集素糖基识别结构域(LSECtin-CRD)双半胱氨酸(Cys)突变体原核表达载体,获得LSECtin-CRD突变体蛋白,并鉴定其生物学活性。方法基于LSECtin-CRD的三维结构模型选择突变位点;通过重叠延伸PCR(SOE-PCR)对LSECtin-CRD基因引入Cys点突变,构建pET28b-Tat-LSECtin-CRD突变体载体;IPTG诱导可溶性表达LSECtin-CRD突变体蛋白,SDS-PAGE鉴定蛋白质表达水平;亲和层析方法对突变体蛋白进行纯化;通过检测突变体蛋白的甘露糖和GlcNAc结合能力鉴定其生物活性。结果菌液PCR和测序结果表明LSECtin-CRD双Cys突变体G205C-A227C和G205C-D279C原核表达载体构建成功,SDS-PAGE结果显示两个突变体蛋白均实现高效可溶性表达,单糖结合试验结果显示两个突变体蛋白均具有良好的生物学活性。结论本研究获得了具有生物学活性的LSECtin-CRD双Cys突变体蛋白,为进一步研究LSECtin-CRD结构和功能关系提供实验依据。

关键词： LSECtin-CRD 原核表达突变体糖基结合

Oxidative Stress Effect of HPM on Rats Brain

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Oxidative Stress Effect of HPM on Rats Brain