碳化钨和Vulcan XC-72炭黑载钯催化剂对甲酸氧化的电催化性能
研究了碳化钨（WC）和Vulcan XC-72炭黑（XC）作混合载体的Pd/WC-XC催化剂对甲酸氧化的电催化性能。发现Pd/WC-XC催化剂对甲酸氧化的电催化性能优于Pd/XC催化剂。而且,Pd/WC-XC催化剂的电催化性能与WC和XC的质量比有关,当质量比为3∶1时,催化剂对甲酸氧化的电催化活性最好,当质量比为2∶1时,催化剂对甲酸氧化的电催化稳定性性最好。
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New Progress on Rectorite/Polymer Nanocomposites
Rectorite is a kind of layered silicate originated from Hubei province;it has unique structure characteristic albeit with the structure and characteristic much like those of montmorillonite.Rectorite is a regularly interstratified clay mineral with alternate pairs of dioctahedral mica-like layer(nonexpansible) and dio…
Synthesis and photophysical properties of polyamides containing in-chain porphyrin and (60)fullerene
Conjugated polyamides containing por- phyrin and (60)fullerene (C60) in the main chain were prepared by a direct polycondensation of the 3 0 H,3 00 H- dicyclopropa(1, 9:16, 17) (5, 6)fullerene-C60-Ih-3 0 ,3 00 - dicarboxylic acid and 5,15-bis(4-aminophenyl)-10,20- bis(3,5-dialkoxyphenyl)porphyrin in the presence of tr…
Flame Retardancy, Smoke Suppression Effect and Mechanism of Aryl Phosphates in Combination with Magnesium Hydroxide in Polyamide 6
易燃，烟排放行为和二 oligomeric 芳基磷酸盐的机械性质[bisphenol A 二度(diphenyl 磷酸盐)(BDP ) 和树脂分二度(diphenyl 磷酸盐)(RDP )] 在聚酰胺 6 与镁氢氧化物(MH ) 结合了(PA6 ) 被调查了。联合 5 wt% BDP ， 50 wt% MH 给予40.9%的一个限制的氧索引( LOI )和 UL94 V-0 等级到 PA6 ，同时，烟版本( pRSR )的山峰率，烟( TSR )的全部的版本和 Izod notched 影响力量是41%，33%和233%相对没有 BDP 的 55 wt% MH 的相应价值分别地。动态机械分析(直接存储器存取) 显示坚韧的改进由增加…
Y-branched TiO2Nanotubes Prepared by Electrochemical Anodization
Highly-ordered Y-branched TiO2 nanotube arrays were fabricated on the Ti foils in ethylene glycol containing 0.5% NH4F(mass fraction)and 5% H2O(volume fraction) by a three-step electrochemical anodic oxidation via increasing the electrolyte temperature.The effect of pretreatment process on surface morphology and the g…
Defect control at nanoscale and flux pinning enhancement in MgB2 superconductor
在由包括 Ti， C， nano 钻石，和 HoB4 做各种各样的 nanoparticles 的 MgB2 的 nanoscale 的缺点控制，和他们的角色玩了提高流动卡住在 MgB2 的力量被比较并且分析。这些 nanodopants 有不同化学、物理的性质，因此引起不同卡住效率，特别有强壮的磁性的时刻的 nanodopants 作为自从磁性的杂质通常比无磁性的杂质与磁性的流动线有一个更强壮的相互作用并且当他们适当地被介绍进超导的矩阵时，可以施加更强壮的力量套住流动线，在 MgB2 卡住中心特别地有趣。
Influence of Aluminum Content on Mechanical Properties and Cold Workability of Fe-33Ni-15Co Alloy
The influence of 0.01% to 0.25% of Aluminum content (in mass percent) on the mechanical properties and cold workability of low thermal expansion Fe-33Ni-15Co sheets in the annealed and hot rolled condition was investigated. Addition of Al up to 0.15% resulted in the increase of ductility and toughness and improvement…
Structure,martensitic transformation and magnetism of Ni_(50-x)Mn_(10+x)Ga_(30)Cu_(10) Heusler alloys
The structure,martensitic transformation temperature and magnetism of Ni50-xMn10+xGa30Cu10 alloys were investigated by experiment and KKR-CPA-LDA method in this paper.It was experimentally found that,with the substitution of Mn for Ni atoms,the structure of the alloys changes from the coexistence of martensite and aus…
Hydrothermal Synthesis, Crystal Structure and Fluorescence Properties of a Three-dimensional Triply-bridged Binuclear Zinc(II) Complex [Zn_2(Mba)_3(Phen)_2EtOH)]·ClO_4
The novel complex [Zn2(Mba)3(Phen)2EtOH)]·ClO4 (Hmba=methoxybenzoic acid, Phen=1,10-phenanthroline, EtOH=ethanol) was synthesized by hydrothermal reactions, and its structure was determined by X-ray diffraction. The crystal belongs to the triclinic system, space group P with a=1.15362(1), b=1.3655(3), c=1.61451(1) nm,…
Experimental investigation of fluidized-bed reactor performance for oxidative coupling of methane
在使流体化床的反应堆的甲烷的氧化联合的性能试验性地用 Mn-Na2WO4/SiO2， La2O3/CaO 和 La2O3-SrO/CaO 催化剂被调查。这些催化剂被发现稳定，特别 Mn-Na2WO4/SiO2 催化剂。这催化剂的钠内容的效果被分析，催化剂凝块的挑战用 2%Mn-2.2%Na2WO4/SiO2 的合适的催化剂作文被探讨。为另外的二催化剂，镧锶内容的效果被分析， 10%La2O320%SrO/CaO 催化剂被发现比 La2O3/CaO 催化剂提供更高的乙烯产量。而且，操作象温度和甲烷那样的参数到氧比率的效果也被考察。最高的乙烯和乙烷(C2 ) 让步在 2 附近与最低甲烷被完成到氧比率。当时，到乙烯和乙烷和 41% 甲烷…
INFLUENCE OF CROSSLINKING ON PHYSICAL PROPERTIES OF LOW DENSITY POLYETHYLENE
低密度聚乙烯的物理性质上的 crosslinking 的影响是显示的 studied.The 结果在 crosslinking 的低度，当它同时在裂缝改进张力的力量和紧张时，网络几乎不影响 crystallinity，有弹性的模量(E) 和让步的应力。张力的力量活动范围在 1.5 phr dicumyl 过氧化物(DCP ) 的大约 24 MPa 的最大值然后由于 crystallinity 的减少减少到大约 18 MPa 的经常的价值。没有显著变化， E 在 crystallinity 在相应于大约 75% 的胶化部分的 0.5 phr DCP 到达它的最大值。二让步，并且两个都产出压力处理的 crosslinked 聚乙烯展览…
Chemical composition dependence of atomic oxygen erosion resistance in Cu-rich bulk metallic glasses
几典型基于 Cu 的体积的表面氧化上的原子氧(AO ) 的效果金属性的眼镜(BMG ) 在现在的工作被学习。在这研究使用的 AO 来源被分泌物血浆类型地面模拟设备产生。非结晶的合金样品的 AO 侵蚀 / 氧化电阻基于集体损失，表面颜色和微观结构的分析被估计。这些基于 Cu 的 BMG 拥有好 AO 侵蚀 / 氧化抵抗，这被发现，他们到 AO 侵蚀 / 氧化的抵抗强烈取决于化学作文。为包含更多的 Ag 或 Cu 的样品， AO 侵蚀 / 氧化抵抗更弱。现在的结果为设计用作空间材料的新金属性的眼镜是重要的。
Organic photovoltaic cells： Novel organic semiconducting materials and molecular arrangement engineering
器官的光电的房间(OPV ) 由于它的高度潜在的申请吸引了越来越多的注意就它的优点而言解决精力危机，例如大区域生产的低费用和容易。OPV 的力量变换效率(PCE ) 在 2010 在 1986 ～ 9.2% 由唐从 1.0% 经历了非常九倍的增加由三菱宣布了化学。获得高效率 OPV 的主要挑战是新狭窄的乐队差距材料的合成，控制分子的安排，设计为更好的光子在活跃的层收获的新奇配置房间。在文章，我们总结了新奇狭窄的乐队差距的最近的进步光电的材料和有效方法到在混合的施主和领受人的形态学为 OPV 的高效拍摄的控制。
Transition Intensities and Excited State Relaxation Dynamics of Tm3+ in Tm:PbF2 Crystal1
High quality Tm doped β PbF2 crystal is grown by the Bridgman method in a nonvacuum atmo sphere. Optical absorption spectra were acquired and analysed in the framework of the Judd–Ofelt theory. Values of radiative transition rates and luminescence branching ratios calculated using phenomenological intensity parameters…
Effects of SrO-B 2 O 3 -SiO 2 glass additive on the microstructure and dielectric properties of CaCu 3 Ti 4 O 12
The effect of SrO-B2O3-SiO2 glass additive (SBS) on the microstructure and dielectric properties of CaCu3Ti4O12 (CCTO) ceramics was investigated. This SBS-added CCTO ceramics were prepared by the solid state reaction. The undesirable impurity phases Ca3SiO5 started appearing in the XRD patterns, suggesting a pos- sibl…
The morphology and dynamic viscoelasticity for PPS/low-melting temperature glass hybrids prepared by melt blending
Polyphenylene 硫化物(PPS ) 和低融化的温度眼镜(LMTG ) 被用来准备 PPS/LMTG organicinorganic 混血儿材料由融化相配。混血儿的蚀刻的表面被扫描电子显微镜(SEM ) 观察，图象与传统的充满的 composites 相比显示出不同驱散的阶段形态学，它也许导致了由砍。先进 rheometric 扩展了系统(ARES ) 被用来调查混血儿的 rheological 行为，结果证明为有 LMTG 的高内容的混血儿的动态存储模量 G 的紧张依赖没出现佩恩效果。
PROPERTIES OF MULTIVALENT FUNCTIONS ASSOCIATED WITH A CERTAIN INTEGRAL OPERATOR
Let A(p) denote the class of functions of the form f(z) = z p + 1=p+1 akz k (p 2 N = {1,2,3,···}), which are ana- lytic in the open unit disk U = {z : z 2 C and |z| < 1}. By making use of a certain integral operator, we obtain some interesting prop- erties of multivalent analytic functions.
H-plasma-assisted aluminum induced crystallization of amorphous silicon
A technique to improve and accelerate aluminum induced crystallization(AIC) by using hydrogen plasma is proposed.Raman spectroscopy and secondary ion mass spectrometry of crystallized poly-Si thin films show that hydrogen plasma radicals reduce the crystallization time of AIC.This technique shortens the annealing time…
Mesomorphic behaviour of new azomethine liquid crystals having terminal bromo substituent
azomethine 酉旨的一个相应系列，在终端 alkanoyloxy 链的碳原子的 4-n-alkanoyloxybenzylidene-4-bromoanilines 拥有偶数(Cn1H2n1COO， n = 8， 10， 12， 14， 16， 18 ) 被综合并且描绘。虽然到 n-dodecanoyloxy 衍生物的 n-octanoyloxy 展出了二形互变的近晶的 A 和近晶的 B 阶段，到 n-octadecanoyloxy 衍生物的 n-tetradecanoyloxy 拥有了二形互变的近晶的 A 和 monotropic 近晶的 B 性质。n-Decanoyloxy 衍生物为近晶的 A 和近晶的 B 阶段表明了…
EFFECTS OF NITROGEN FLOW RATE AND POST-HEAT TREATMENT ON PREPARATION OF Ti_2AlN COATINGS BY AIP
In the present work,Ti-Al-N coatings were deposited on 1Cr18Ni9Ti substrates at a low synthesis temperature using arc ion plating(AIP).The effects of nitrogen flow rate and post-heat treatment on the microstructure of the coatings were investigated.The results show that no Ti_2AlN phase forms in all the asdeposited co…