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Sticked-Layer Strategy to a Flexible-Robust Hydrogen-Bonded Organic Framework for Efficient C_(2)H_(2)/CO_(2)Separation

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CCS Chemistry 2024年第3期6卷 663-671页

作者： Zhen Yuan Xianghua Jiang Liangji Chen Junjie Chen lu Li Yisi Yang yunbin Li Fahui Xiang Shengchang Xiang Banglin Chen Zhangjing Zhang Fujian Key Laboratory of Polymer Materials College of Chemistry and Materials ScienceFujian Normal UniversityFuzhou 350007

Flexible-robust hydrogen-bonded organic frameworks(HOFs)are attracting increasing interest due to their excellent separation performance for important industrial gases,but the construction remains ***,a sticked-layer strategy is first proposed to construct a flexible-robust HOF,HOFFJU-8,from a donor(D)–π–acceptor(A)molecule 4,4′,4″,4‴-(pyrrolo[3,2-b]pyrrole-1,2,4,5-tetrayl)tetrabenzonitrile(DP-4CN).HOF-FJU-8 is amicroporous three-dimensional framework composed of two kinds of DP-4CN molecules,one acting as building units for the two-dimensional layer via C≡N···H–C hydrogen bond dimers and another as the sticks to link the layers along channels through D–Aπ···π*** activated framework HOF-FJU-8a possesses flexible-robust pore characteristics,as determined by the gas adsorption and in situ gas-loaded powder X-ray ***-FJU-8a exhibits adaptive adsorption and stronger binding affinity to C_(2)H_(2)rather than CO_(2)due to the flexible-robust nature,which can effectively separate acetylene and carbon dioxide mixtures.

关键词： hydrogen-bonded organic framework flexible-robust sticked-layer D-Aπ···πinteraction in situ powder X-ray diffraction C_(2)H_(2)/CO_(2)separation

基于QFD产品设计方法的动态机械载荷试验设备研究

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机械工程师 2018年第6期 51-53页

作者：卢小犇程云斌范海艇屠淳上海市质量监督检验技术研究院上海201112

随着新标准IEC 62782的颁布,对于光伏组件动态机械载荷试验提出了全新的要求,但目前市场上还没有符合要求的设备。通过QFD产品设计方法,对动态机械载荷试验设备的设计提供优化可行的方案。

关键词： QFD 光伏组件动态机械载荷设计方案

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混凝土复合型裂缝最大拉应变断裂准则

西北农业大学学报 1999年第1期27卷 43-46页

作者：邓宗才卢云斌李宗利娄宗科山东建筑材料工业学院济南市公路局西北农业大学水利与建筑工程学院

根据线弹性断裂力学，推导出了复合型裂纹的最大拉应变断裂准则，并与最大拉应力理论、应变能密度因子理论作了比较、分析；最后引用了大量试验资料验证了最大拉应变理论的适用性。

关键词：混凝土断裂准则断裂最大拉应变

J积分法测量低碳钢Q235的断裂韧性K_(IC)

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武汉理工大学学报 2002年第4期24卷 111-112页

作者：赵章焰吕运冰孙国正武汉理工大学

低碳钢 Q2 35是工程中广泛使用的材料 ,其断裂韧性是工程中进行裂纹监测的重要参数。用 Q2 35钢的标准试件在 MTS- 810疲劳试验机上 ,以 ASTM E813- 89试验标准为基础 ,采用三点弯曲实验方式 ,测量了 Q2 35钢的断裂韧性。

关键词： Q235钢断裂韧性实验测量低碳钢 J积分法裂纹监测

Effect of aging on the mechanical properties and corrosion susceptibility of an Al-Cu-Li-Zr alloy containing Sc

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Rare Metals 2008年第2期27卷 146-152页

作者： LIANG Wenjie PAN Qinglin HE yunbin LI Yunchun ZHOU Yingchun lu Congge School of Materials Science and Engineering Central South University Changsha 410083 China

The effects of aging on the microstructure, mechanical properties, intergranular corrosion, and exfoliation corrosion of an Al-3.5Cu-1.5Li-0.22（Sc ＋ Zr） alloy have been investigated. The results show that the alloy has the character of age hardening, and the major phase of precipitation and strengthening is the T1 phase. The aging temperature and aging time have a significant effect on the amount and distribution of the T1 phase. The proper artificial single-aging treatment of the alloy is at 160℃ for 40 h. The intergranular corrosion and exfoliation corrosion of the alloy are caused by the anodic dissolution of the T1 phase and the precipitate-free zone （PFZ）. With increasing the aging time to overaged, the T1 phase coarsens, and the PFZ widens, leading to an increase in the susceptibility to intergranular corrosion and exfoliation corrosion.

关键词： Al-Li alloys aging microstructure T1 phase corrosion

Bandgap narrowing and polarization enhancement in(K,Na,Li)(Nb,Sb,Ta)O_(3)+x%Fe_(2)O_(3) lead-free ceramics for photovoltaic applications

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Journal of Advanced Ceramics 2023年第7期12卷 1406-1417页

作者： Jian Chen Jiaxing Mao Zihui Wang Yanhui Dong Jinming Guo Mingkai Li Yi Zhang Yinmei lu yunbin He Key Laboratory of Green Preparation and Application for Functional Materials Ministry of EducationHubei Key Lab of Ferro&Piezoelectric Materials and DevicesHubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan 430062China Institute of Photoelectronic Thin Film Devices and Technology Tianjin Key Laboratory of Thin Film Devices and TechnologyNankai UniversityTianjin 300350China

The need for ferroelectric materials with both narrow bandgaps(Eg)and large remanent polarization(Pr)remains a key challenge to the development of high-efficiency ferroelectric photovoltaic(FPV)*** this work,[(K_(0.43)Na_(0.57))_(0.94)Li_(0.06)][(Nb_(0.94)Sb_(0.06))_(0.95)Ta_(0.05)]O_(3)(KNLNST)-based lead-free ceramics with narrow Eg and large P are obtained via Fe_(2)O_(3) *** optimizing the level of Fe_(2)O_(3) doping,a KNLNST+1.3%Fe_(2)O_(3) ceramic is fabricated that simultaneously possesses a narrow Eg of 1.74 eV and a large Pr of 27.05μC/cm^(2).These values are much superior to those of undoped KNLNST ceramics(Eg=3.1 eV and Pr=17.73μC/cm^(2)).While the large P stems from the increment of the volume ratio between the orthorhombic and tetragonal phases(Vo/VT)in KNLNST ceramics by proper amount of Fe3+doping,the narrow Eg is attributed to the coupling interaction between the Fe3+dopants and the B-site Sb3+host ***,a switchable photovoltaic effect caused by the ferroelectric depolarization electric field(Edp)is observed in the KNLNST+1.3%Fe_(2)O_(3) ceramic-based *** to the narrower Eg and larger P,of the doped ceramic,the photovoltaic performance of the corresponding device(open-circuit voltage(Voc)=-5.28 V and short-circuit current density(JSC)=0.051μA/cm^(2))under a downward poling state is significantly superior to that of an undoped KNLNST-based device(Voc=-0.46 V and Jse=0.039μA/cm^(2)).This work offers a feasible approach to developing ferroelectric materials with narrow bandgaps and large Pr for photovoltaic applications.

关键词： ferroelectrics bandgap(E_(g)) remanent polarization(P_(r)) photovoltaic effect [(K_(0.43)Na_(0.57))_(0.94)Li_(0.06)][(Nb_(0.94)Sb_(0.06))_(0.95)Ta_(0.05)]O_(3)(KNLNST)

Geochemistry and origin of tektites from Guilin of Guangxi,Guangdong and Hainan

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Science China Earth Sciences 2011年第3期54卷 349-358页

作者： LIN Su GUAN yunbin HSU WeiBiao Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China Graduate School of Chinese Academy of Sciences Beijing 100049 China Division of Geological and Planetary Sciences California Institute of Technology Pasadena CA 91125 USA State Key Laboratory of Geological Processes and Mineral Resources and Faculty of Earth Sciences China University of Geosciences Wuhan 430074 China

Six tektites from Guilin of Guangxi, Hainan, and Guangdong were analyzed for the abundances of major elements and 27 trace elements. All samples are splash-form tektites and have SiO2 contents ranging from 73.1wt% to 76.0wt% (74.6wt% on average). The chemical compositions, except Cr and Ni, of tektites from different areas, are similar. Guangdong tektite shows enrichments of Ni and Cr contents by a factor of 3, and has slightly higher MgO and FeO than Hainan and Guilin tektites. It indicates that the tektites were formed by mixing several target rocks. The major and trace element concentrations of southern China tektites closely resemble previously reported data for average splash-form and Muong Nong-type indochinites, indicating that they have the same source. (La/lu)CI (7.99), Zr/Hf (35.45 on average), Ba/Rb (3.59 on average), and the rare earth element (REE) contents of tektites are similar to those of typical post Archean upper crustal rocks. This study suggests that the best fit for the target source of southern China tektites could be a combination of 41% shale, 2% sandstone, 20% greywacke, and 37% quartzite.

关键词： tektites southern China Australasian source rock Post-Archean sedimentary rock

Magnetic properties and magnetic entropy change of perovskite manganites La_(0.9-x)Eu_xSr_(0.1)MnO_3(x=0.000,0.075) by experimental method and numerical fitting

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Journal of Rare Earths 2019年第6期37卷 622-627页

作者： Xiang Jin Jianjun Zhao Hongye Wu Bao Xu yunbin Sun Xiaodong Sun Fengze Cao Kai Wang Wenxing Wang Yutong Zhang Yi lu Key Laboratory of Magnetism and Magnetic Materials at Universities of Inner Mongolia Autonomous Region Baotou Teachers College

Polycrystalline samples La_(0.9-x)EuxSr_(0.1)MnO_3(x = 0.000, 0.075) were prepared by the standard solid-state reaction method. The results show that the samples preform a characteristic of clusters spin-glass state at low temperature. The samples show a characteristic of ferromagnetism(FM) characteristic in the temperature range of 15-125 K and 15-150 K respectively; the samples show preformed clusters in the temperature range of 125-343 K and 150-325 K, respectively, the samples show paramagnetism(PM)characteristic above 343 and 325 K, respectively. The second-order transitions are found at 118 and 135 K for undoped and doped sample, respectively. When the applied magnetic field is 7 T, the maximum magnetic entropy change |△S_M| value of the samples is near the Curie temperature(Tc), and the value of|△S_M| reaches 2.76 and 3.03 J/(K kg), respectively. In addition, the relative cooling power(RCP) is found to be 425.28 and 443.53 J/kg. The numerical fitting data fit well with experimental data. These results indicate that both the samples have the potential to realize magnetic refrigeration in the high temperature region(T > 77 K).

关键词： Perovskite Magnetic properties Magnetic entropy change Preforming cluster phase Least square method Rare earths

Ta-TM(TM=Ti,Cr,Co,Ni)二元合金形成焓的亚规则模型

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上海金属 2009年第3期31卷 24-26页

作者：张淳廖树帜陈佳彭好军吕云宾王小丽谢斌张邦维王玲玲湖南大学应用物理系长沙410082 湖南师范大学数学与计算机科学学院低维量子结构与调控教育部重点实验室湖南师范大学物理系

形成焓是描述合金形成能力和稳定性的重要参数。用亚规则模型对Ta-TM(TM=Ti,Cr,Co,Ni)二元合金的形成焓进行理论计算,目的是了解这四种Ta合金的热力学性质,预测其中间相的存在。结果显示亚规则模型对所研究的二元合金的形成焓结果能准... 详细信息

形成焓是描述合金形成能力和稳定性的重要参数。用亚规则模型对Ta-TM(TM=Ti,Cr,Co,Ni)二元合金的形成焓进行理论计算,目的是了解这四种Ta合金的热力学性质,预测其中间相的存在。结果显示亚规则模型对所研究的二元合金的形成焓结果能准确地描述和解释已有实验结果。这为制备和开发广泛应用于化学工业的耐腐蚀、航空航天工业的高温结构Ta合金材料提供了理论支撑。

关键词：钽基二元合金形成焓亚规则模型