The new type of the hierarchically structured porous solid-acid catalysts described in this presentation possess a remarkable pore system,encompassing well-defined macrochannels,interconnected mesopores,intracrystalli...
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The new type of the hierarchically structured porous solid-acid catalysts described in this presentation possess a remarkable pore system,encompassing well-defined macrochannels,interconnected mesopores,intracrystalline mesopores,and tunable zeolite(ZMS-5,Beta,…)*** hierarchical micro-meso-macroporous zeolitic catalysts with improved stability have been synthesized via a quasi solid state chemical crystallization ***,the catalyst
Stability and electronic properties of Ti-doped boron carbides (B 13C2) were studied using the first principle calculations based on plane wave pseudo-potential theory. The calculated results showed that Ti atom doped...
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The CaF_(2)-4LiF additive was added into SrTiO_(3)ceramics in order to decrease the sintering temperature for compact pulse power *** crystalline structure,microstructure and energy storage performance of sintered cer...
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The CaF_(2)-4LiF additive was added into SrTiO_(3)ceramics in order to decrease the sintering temperature for compact pulse power *** crystalline structure,microstructure and energy storage performance of sintered ceramics were *** CaF_(2)-4LiF additive to SrTiO_(3)ceramics contributes to a notably enhancement of the energy storage *** great enhancement in energy storage density occurred due to the notable increase in breakdown strength and the refinement of *** 2 at%additive,the samples exhibited an average breakdown strength of 31.8kV/mm,and an energy storage density of 1.212 J/cm^(3)which is about 1.4 times higher than pure SrTiO_(3).
Ceramic sintering in microwave field is a new ceramic processing method. In present paper, we detected the microstructures and boundary segregation of BaTiO3 ceramics which were sintered in microwave field. Scanning e...
Ceramic sintering in microwave field is a new ceramic processing method. In present paper, we detected the microstructures and boundary segregation of BaTiO3 ceramics which were sintered in microwave field. Scanning electron microscopy(SEM), and transmission electron microscopy(TEM), and chemical analysis methods were employed to detect the microstructure of BaTiO3, element distribution near the boundary of BaTiO3 ceramic. The results shown growth of grain of the ceramic was influenced by impurities such as acceptor, benefactor et al, and the element distribution near the grain boundary of BaTiO3 sintered in microwave field were different with that sintered in conventional method. The boundary segregations of BaTiO3 sintered in microwave field were not obvious as compared to the conventional method because the diffusion was enhanced due to the microwave field.
This study investigated the structures and properties of cationic dyeable poly(ethylene terephthalate)(CDP) and easy cationic dyeable poly(ethylene terephthalate)(ECDP) by FTIR, X-ray diffraction, mechanical test, and...
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This study investigated the structures and properties of cationic dyeable poly(ethylene terephthalate)(CDP) and easy cationic dyeable poly(ethylene terephthalate)(ECDP) by FTIR, X-ray diffraction, mechanical test, and DSC. The results showed that the FTIR spectrums of CDP and ester-type ECDP fibers were similar to the that of PET. It suggested that the adding of the third monomer and the fourth monomer had good compatible with the original structure unit of PET. the position of X-ray diffraction peak of CDP and ester-type ECDP were the same as which of PET, the third monomer and the fourth monomer did not pack into the original polyester unit cell but concentrated at the polyester crystalline surface and the amorphous *** adding the third monmome and the fourth monmomer, the initial modulus of the CDP and ester-type ECDP fibers became inferior. But the breaking elongation of them increased. The DSC suggested that The melting range of CDP and ECDP finished fiber were wider than that of PET fiber, but the melting point and crystallinity were less than them of PET fiber.
This study investigated the structures and properties of cationic dyeable poly(ethylene terephthalate)(CDP) and easy cationic dyeable poly(ethylene terephthalate)(ECDP) by FTIR,X-ray diffraction,mechanical test,and **...
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This study investigated the structures and properties of cationic dyeable poly(ethylene terephthalate)(CDP) and easy cationic dyeable poly(ethylene terephthalate)(ECDP) by FTIR,X-ray diffraction,mechanical test,and *** results showed that the FTIR spectrums of CDP and ester-type ECDP fibers were similar to the that of *** suggested that the adding of the third monomer and the fourth monomer had good compatible with the original structure unit of *** position of X-ray diffraction peak of CDP and ester-type ECDP were the same as which of PET,the third monomer and the fourth monomer did not pack into the original polyester unit cell but concentrated at the polyester crystalline surface and the amorphous *** adding the third monmome and the fourth monmomer,the initial modulus of the CDP and ester-type ECDP fibers became *** the breaking elongation of them *** DSC suggested that The melting range of CDP and ECDP finished fiber were wider than that of PET fiber,but the melting point and crystallinity were less than them of PET fiber.
This study investigated the structures and properties of cationic dyeable poly(ethylene terephthalate)(CDP) and easy cationic dyeable poly(ethylene terephthalate)(ECDP) by FTIR, X-ray diffraction, mechanical test, and...
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This study investigated the structures and properties of cationic dyeable poly(ethylene terephthalate)(CDP) and easy cationic dyeable poly(ethylene terephthalate)(ECDP) by FTIR, X-ray diffraction, mechanical test, and DSC. The results showed that the FTIR spectrums of CDP and ester-type ECDP fibers were similar to the that of PET. It suggested that the adding of the third monomer and the fourth monomer had good compatible with the original structure unit of PET. the position of X-ray diffraction peak of CDP and ester-type ECDP were the same as which of PET, the third monomer and the fourth monomer did not pack into the original polyester unit cell but concentrated at the polyester crystalline surface and the amorphous *** adding the third monmome and the fourth monmomer, the initial modulus of the CDP and ester-type ECDP fibers became inferior. But the breaking elongation of them increased. The DSC suggested that The melting range of CDP and ECDP finished fiber were wider than that of PET fiber, but the melting point and crystallinity were less than them of PET fiber.
Catalytic effects of NiCl,TiC and TiN on the dehydrogenation/rehydrogenation characteristics of LiAlH were investigated by pressure -content-temperature(PCT),X-ray diffraction(XRD),differential scanning calorimatory(D...
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Catalytic effects of NiCl,TiC and TiN on the dehydrogenation/rehydrogenation characteristics of LiAlH were investigated by pressure -content-temperature(PCT),X-ray diffraction(XRD),differential scanning calorimatory(DSC),and field emission scanning electron microscopy(FESEM).The doped samples exhibit dehydrogenation at much lower *** with NiCl,TiC and TiN induce a decrease in the decomposition of first step by about 50-65℃compared to that of as received ***,amount of hydrogen release is significantly higher for TiC additions than that of samples doped with TiN and *** desorption results at 125℃reveal that dehydrating rate of doped alanate is much faster than that of pure ***,TiN and NiCl dopants show the reabsorption of about 1.9 wt.%, 1.3 wt.%,and 1.1 wt.%,*** and FESEM analyses suggest that both TiC and TiN are stable during the ball milling as well as the dehydrogenation *** the contrary,NiCl reacts and causes the partial decomposition of Li alanate during the ball milling process.
作者：
Pan YongJun潘勇军Xie HongQuan陈勇Chen Yong崔丽College of Material Science and Engineering
Wuhan Textile University Wuhan 430074 China 武汉纺织大学材料科学与工程学院 武汉 430073 Department of Chemistry Huazhong University of Science and Technology Wuhan 430074China 武汉理工大学复合材料国家重点实验室 武汉 430070 State key laboratory of advanced technology for materials synthesis and processingWuhan University of Technology Wuhan 430070 China
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