期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到16篇文章
< 1 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Preparation and characterization of Ce1-xFe_xO_2 complex oxides and its catalytic activity for methane selective oxidation 认领 引用 被引量：10
1
作者 李孔斋 王华 +1 位作者 魏永刚 刘明春 《Journal of Rare Earths》 SCIE EI CAS 2008年第2期245-249,共5页
A series of Ce1-xFexO2 （x=0, 0.2, 0.4, 0.6, 0.8, 1） complex oxide catalysts were prepared using the coprecipitation method. The catalysts were characterized by means of XRD and H2-TPR. The reactions between methane ... A series of Ce1-xFexO2 （x=0, 0.2, 0.4, 0.6, 0.8, 1） complex oxide catalysts were prepared using the coprecipitation method. The catalysts were characterized by means of XRD and H2-TPR. The reactions between methane and lattice oxygen from the complex oxides were investigated. The characteristic results revealed that the combination of Ce and Fe oxide in the catalysts could lower the temperature necessary to reduce the cerium oxide. The catalytic activity for selective CH4 oxidation was strongly influenced by dropped Fe species. Adding the appropriate amount of Fe2O3 to CeO2 could promote the action between CH4 and CeO2. Dispersed Fe2O3 first returned to the original state and would then virtually form the Fe species on the catalyst, which could be considered as the active site for selective CH4 oxidation. The appearance of carbon formation was significant and the oxidation of carbon appeared to be the rate-determining step; the amounts of surface reducible oxygen species in CeO2 were also relevant to the activity. Among all the catalysts, Ce0.6Fe0.402 exhibited the best activity, which converted 94.52% of CH4 at 900 ℃. 展开更多
关键词 Ce1-xFexO2 complex oxides H2-TPR lattice oxygen methane selective oxidation rare earths
暂未订购 下载PDF
Ce_xTi1-xO_2 Mixed Oxides Supported CuO Catalyst for NO Reduction by CO 认领 引用 被引量：1
2
作者 楼莉萍 蒋晓原 +3 位作者 陈英旭 吕光烈 周仁贤 郑小明 《Journal of Rare Earths》 SCIE EI CAS 2003年第3期331-336,共6页
Ce x Ti 1- x O 2 mixed oxides of different mole ratios ( x =0, 0.1, 0.2～0.9, 1.0) were prepared by co precipitation of TiCl 4 with Ce(NO 3) 3 and then loaded with different amounts of CuO. The effects of CuO on NO+CO... Ce x Ti 1- x O 2 mixed oxides of different mole ratios ( x =0, 0.1, 0.2～0.9, 1.0) were prepared by co precipitation of TiCl 4 with Ce(NO 3) 3 and then loaded with different amounts of CuO. The effects of CuO on NO+CO reaction were investigated, and the structure and reductive properties of various CuO/Ce x Ti 1- x O 2 were characterized by the methodologies of BET, TPR and XRD. The results show that different Ce/Ti mole ratios and calcination temperatures induce changes of structure and reductive properties of the Ce x Ti 1- x O 2 mixed oxides. When x =0.1～0.5, amorphous CeTi 2O 6 phase mainly forms at 650 ℃ compared to the formation of CeTi 2O 6 which crystallizes at 800 ℃. When x >0.6, some TiO 2 enters the CeO 2 lattice and a CeO 2 TiO 2 solid solution is formed. The activity of 6%CuO/Ce x Ti 1- x O 2 calcined at 650 ℃ is largely affected by the x values, which is the highest when x =0.3, 0.4 and 0.9. The NO conversion reaches 70% at a reaction temperature of 150 ℃. By comparison, the x values have little effect on the activity of 6%CuO/Ce x Ti 1- x O 2 calcined at 800 ℃ . There are strong interactions between CuO and CeTi 2O 6, i.e., formation of the CeTi 2O 6 phase shifts the CuO reduction peak temperature from 380 to 200 ℃, and CuO, in turn, shifts the CeTi 2O 6 reduction peak temperature from 600 to 300 ℃. 展开更多
关键词 catalitic chemistry Ce x Ti 1- x O 2 mixed oxides CuO/Ce x Ti 1- x O 2 catalysts CeTi 2O 6 phase NO+CO reaction activity rare earths
暂未订购 下载PDF
Selective oxidation of methane and carbon deposition over Fe_2O_3/Ce1-xZr_xO_2 oxides 认领 引用 被引量：4
3
作者 Xiu-Li Sang Kong-Zhai Li +1 位作者 Hua Wang Yong-Gang Wei 《Rare Metals》 SCIE EI CAS CSCD 2014年第2期230-238,共9页
A series of Fe2O3/Al2O3, Fe2O3/CeO2, Ce0.7Zr0.3O2, and Fe2O3/Ce1-xZrxO2（x = 0.1–0.4） oxides was prepared and their physicochemical features were investigated by X-ray diffraction（XRD）, transmission electron micro... A series of Fe2O3/Al2O3, Fe2O3/CeO2, Ce0.7Zr0.3O2, and Fe2O3/Ce1-xZrxO2（x = 0.1–0.4） oxides was prepared and their physicochemical features were investigated by X-ray diffraction（XRD）, transmission electron microscope（TEM）, and H2-temperature-programmed reduction（H2-TPR） techniques. The gas–solid reactions between these oxides and methane for syngas generation as well as the catalytic performance for selective oxidation of carbon deposition in O2-enriched atmosphere were investigated in detail. The results show that the samples with the presence of Fe2O3show much higher activity for methane oxidation compared with the Ce0.7Zr0.3O2solid solution,while the CeO2-contained samples represent higher CO selectively in methane oxidation than the Fe2O3/Al2O3sample. This suggests that the iron species should be the active sites for methane activation, and the cerium oxides provide the oxygen source for the selective oxidation of the activated methane to syngas during the reaction between methane and Fe2O3/Ce0.7Zr0.3O2. For the oxidation process of the carbon deposition, the CeO2-containing samples show much higher CO selectivity than the Fe2O3/Al2O3sample, which indicates that the cerium species should play a very important role in catalyzing the carbon selective oxidation to CO. The presence of the Ce–Zr–O solid solution could induce the growth direction of the carbonfilament, resulting in a loose contact between the carbon filament and the catalyst. This results in abundant exposed active sites for catalyzing carbon oxidation, strongly improving the oxidation rate of the carbon deposition over this sample. In addition, the Fe2O3/Ce0.7Zr0.3O2also represents much higher selectivity（ca. 97 %） for the conversion of carbon to CO than the Fe2O3/CeO2sample, which can be attributed to the higher concentration of reduced cerium sites on this sample. The increase of the Zr content in the Fe2O3/Ce1-xZrxO2samples could improve the reactivity of the materials for methane oxidation, but it also reduces the selectivity for CO formation. 展开更多
关键词 Methane Carbon deposition Gas–solid reaction Selective oxidation of carbon Fe2O3/Ce1-xZrxO2 catalysts
暂未订购 下载PDF
Mn位Ce取代的NaNi1/3Fe1/3Mn1/3O2钠离子电池正极材料的合成与电化学性能研究 认领 引用
4
作者 黄帅 王奥予 +1 位作者 高毓洋 袁涛 《有色金属材料与工程》 CAS 2025年第2期27-34,共8页
O3型NaNi1/3Fe1/3Mn1/3O2因其成本低、理论比容量高和易于合成的优点而被认为是最具前景的钠离子电池正极材料之一,然而其循环稳定性差仍然是一个需要解决的主要问题。研究将Ce取代样品晶格中的Mn,发现,较大半径的Ce4+... O3型NaNi1/3Fe1/3Mn1/3O2因其成本低、理论比容量高和易于合成的优点而被认为是最具前景的钠离子电池正极材料之一,然而其循环稳定性差仍然是一个需要解决的主要问题。研究将Ce取代样品晶格中的Mn,发现,较大半径的Ce4+在结构中起到支撑作用,可以阻碍样品在充放电过程中过渡金属层的层间滑移,增强结构稳定性,并提供更宽的Na+传输通道,提高材料的Na+扩散效率、改善材料在充放电过程中的结构可逆性,实现循环稳定性和倍率性能的提高。经过改性的NaNi1/3Fe1/3Mn1/3-0.0075Ce0.0075O2,当电压为2.0~4.2 V时,在0.2 C倍率下表现出可观的可逆比容量,达到155.9 mA·h/g,在1.0 C倍率下循环100圈后的容量保持率可达73.5%。 展开更多
关键词 钠离子电池 层状氧化物正极 O3-NaNi1/3Fe1/3Mn1/3O2 Mn位Ce取代
暂未订购 下载PDF
Ce1-xFe_xO_2复合氧化物的结构及其催化碳烟低温燃烧性能 认领 引用 被引量：13
5
作者 晏冬霞 王华 +3 位作者 李孔斋 魏永刚 祝星 程显名 《物理化学学报》 SCIE CAS 北大核心 2010年第2期331-337,共7页
用水热法制备了不同摩尔比的系列Ce1-xFexO2复合氧化物碳烟燃烧催化剂.采用X射线粉末衍射(XRD)、比表面积(BET)、拉曼光谱(Raman)、H2程序升温还原(H2-TPR)及程序升温氧化反应(TPO)等技术考察了Fe含量对催化剂结构和性能的影响,重点探... 用水热法制备了不同摩尔比的系列Ce1-xFexO2复合氧化物碳烟燃烧催化剂.采用X射线粉末衍射(XRD)、比表面积(BET)、拉曼光谱(Raman)、H2程序升温还原(H2-TPR)及程序升温氧化反应(TPO)等技术考察了Fe含量对催化剂结构和性能的影响,重点探讨了催化剂表面性质和体相结构与催化活性和稳定性之间的关系.结果表明,Fe3+较难进入CeO2晶格中,部分Fe2O3分散在CeO2表面.铈铁固溶体(氧空位)有利于氧的吸附活化,而表面氧化铁对提高催化剂的抗老化能力起着重要作用.Ce0.8Fe0.2O2有最高的Fe3+掺杂量,有良好分散性的表面Fe2O3,显示出最好的催化活性和稳定性,催化碳烟的起燃温度(Ti)和生成CO2的峰值温度(Tp)分别为262和314℃.Ce0.8Fe0.2O2高温老化后的Ti和Tp仍较低,分别为292和392℃. 展开更多
关键词 碳烟燃烧 水热法 Ce1-xFexO2复合氧化物 固溶体 交互作用
暂未订购 下载PDF
Preparation and characterization of Ce(1-x)PrxO2 supports and their catalytic activities 认领 引用 被引量：6
6
作者 Kingkaew Chayakul Chanapattharapol Somkiat Krachuamram +2 位作者 Ammarika Makdee Preeya Unwiset Sirihathai Srikwanjai 《Journal of Rare Earths》 SCIE EI CAS CSCD 2017年第12期1197-1205,共9页
In this work, the addition of praseodymium（Pr） into ceria as a mixed oxide support in a form of Ce（1-x）PrxO2（x = 0.01,0.025, 0.050, 0.075 and 0.10） was prepared using a co-precipitation method. The structural an... In this work, the addition of praseodymium（Pr） into ceria as a mixed oxide support in a form of Ce（1-x）PrxO2（x = 0.01,0.025, 0.050, 0.075 and 0.10） was prepared using a co-precipitation method. The structural and textural properties of the synthesized supports were characterized by X-ray diffraction（XRD）, N2 adsorption-desorption, Raman spectroscopy, H2-temperature programmed reduction（H2-TPR） and H2-chemisorption. Upon addition of Pr, XRD patterns and Raman spectra indicated an enlargement of ceria unit cell and the characteristics Raman broad peak at 570 cm^（-1） which was attributed to the existence of oxygen vacancies in the ceria lattice. This indicated that some Ce^（4＋） ions in ceria were replaced by larger Pr^（3＋） cations. To evidence the incorporation of Pr^（3＋） cations into ceria lattice,X-ray absorption near edge structure（XANES） was employed. The results showed that the oxidation states of Ce in mixed oxide supports were slightly lower than 4＋ while those of Pr were still the same as a precursor salt. Therefore, the incorporation of Pr^（3＋） into ceria lattice would lead to strain and unbalanced charge and result in oxygen vacancies. The reducibility of Ce（1-x）PrxO2 mixed oxide supports was investigated by H2-TPR and temperature-resolved X-ray absorption spectroscopy experiment under reduction conditions. XANES spectra of Ce L3 edges showed a lower surface reduction temperature（Ce^（4＋）to Ce^（3＋）） of Ce（0.925）Pr（0.075）O2 than that of CeO2 which agreed with H2-TPR results. H2-chemisorption indicated that Pr promoted the dispersion of the metal catalyst on the mixed oxide support and increased the adsorption site for CO. For WGS reaction, 1% Pd/mixed oxide support had higher WGS activity than 1%Pd/ceria. The increase of WGS activity was due to the increase of Pd dispersion on the support and the existence of oxygen vacancies produced from incorporation of Pr into the ceria lattice. 展开更多
关键词 Ce（1-x）PrxO2 mixed oxide support Oxygen vacancies Temperature-resolved in-situ H2 reduction
暂未订购 下载PDF
Study on Property of Salicylaldehyde Schiff Base Metal Complexes for Catalytic Oxidation of Model Sulfides 认领 引用 被引量：2
7
作者 Jia Chaoyang Liang Shuyuan +4 位作者 Liu Lei Shao Xue Zhang Longli Wang Fangzhu Jiang Cuiyu 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2021年第1期58-66,共9页
Seven kinds of Schiff base metal complexes(C1-C7)were synthesized by the reaction of substituted salicylaldehyde Schiff base with cobalt nitrate,nickel nitrate,and copper nitrate,respectively.The oxygen carrying perfo... Seven kinds of Schiff base metal complexes(C1-C7)were synthesized by the reaction of substituted salicylaldehyde Schiff base with cobalt nitrate,nickel nitrate,and copper nitrate,respectively.The oxygen carrying performance,and the catalytic property of complexes for the oxidation of model sulfides 1-hexanethiol,dibutyl sulfide,and 2-methylthiophene along with their influencing factors were explored,while the oxidized products of the model sulfides were also analyzed and characterized.The results show that the catalytic oxidation property of the complexes is determined by their oxygen carrying performance and solubility in n-octane.The oxygen carrying performance of the complexes is mainly affected by the central ion species,the electronic effects,and the spatial effects of the substituents as well as the degree of conjugation.More specifically,the oxygen carrying performance can be improved by enhancing the oxygenation capacity of the central metal ions,increasing the electron donating ability of the ligand substituent,and diminishing the steric hindrance as well as extending the conjugated chain.Complexes C7 were found to be with high oxygen carrying capacity and high solubility in n-octane,which shows the best catalytic oxidation property,and the oxidation conversion rates for 1-hexylthiol,dibutyl sulfide,and 2-methylthiophene are 74.2%,65.1%,and 22.7%,respectively.Upon using the oxidation catalyst of Schiff base metal complexes,three sulfides can be oxidized by oxygen to form sulfones and sulfoxides.1-Hexanethiol and dibutyl sulfide will continue to be oxidized to form sulfates and sulfites. 展开更多
关键词 Schiff base metal complexes 1-hexanethiol dibutyl sulfide 2-methylthiophene catalytic oxidation structureactivity relationship
暂未订购 下载PDF
SYNTHESIS,CHARACTERIZATION,THERMAL DEGRADATION AND ELECTRICAL CONDUCTIVITY OF OLIGO[2-(THIEN-2-YLMETHYLENE)AMINOPHENOL]AND OLIGOMER-METAL COMPLEXES 认领 引用 被引量：1
8
作者 Ismet Kaya Aysel Aydin 《Chinese Journal of Polymer Science》 SCIE CAS 2009年第4期465-477,共13页
The optimum reaction conditions of the oxidative polycondensation of 2-(thien-2-yl-methylene)aminophenol(2-TMAP)has been accomplished by using air O2,H2O2 and NaOCI oxidants in an aqueous alkaline medium between 20℃a... The optimum reaction conditions of the oxidative polycondensation of 2-(thien-2-yl-methylene)aminophenol(2-TMAP)has been accomplished by using air O2,H2O2 and NaOCI oxidants in an aqueous alkaline medium between 20℃and 90C.The structures of the monomer and oligomer were confirmed by FT-IR,UV-Vis,'H-NMR and'C-NMRand elementalanalysis.TGA-DTA,size exclusion chromatography(SEC)techniques and solubility tests were applied for characterization.The'H-NMR and"C-NMR data show that the polymerization proceeded with C-CandC-O-C coupling system from ortho and para positions and oxyphenylene.The number-average molecular weight(M),weight-average molecular weight(M.)and polydispersity index(PDI)values of oligo[2-(thien-2-yl-methylene)aminophenol)(O-2-TMAP)were determined with SECmeasurements.Thermal analyses of oligomer-metal complex compounds of O-2-TMAP with Cd*²,Co*²,Cu*²,Znt²,Fe*²,Zr*,Ni*²and Pb*2ions were investigated in N₂atmosphere in the temperature range of 15-1000C.The highest occupied molecular orbital and the lowest unoccupied molecular orbital of monomer and oligomer were determined from the onset potentials for n-doping and p-doping,respectively.Optical band gaps(Ep)of 2-TMAP and O-2-TMAPand oligomer-metal complex compounds determined according to UV-Vis measurements.Also,electrical conductivities of O-2-TMAPand its metal complexes measured with four-point probe technique. 展开更多
关键词 Air O2 NaOCl O1igo[2-(thien-2-yl-methylene)aminophenol] Oxidative polycondensation Thermal analysis Electrical conductivity Oligomer-metal complex compounds
暂未订购 下载PDF
CuO/Ce0.5Zr0.5O_2的结构特征及催化性能表征 认领 引用 被引量：11
9
作者 蒋晓原 陈煜 +1 位作者 周仁贤 郑小明 《燃料化学学报》 北大核心 2001年第Z1期122-125,共4页
以硝酸铈和硝酸锆为原料 ,采用共沉淀法制备了不同摩尔比 (X =0 ,0 1,0～ 1 0 )的CexZr1 xO2 样品。并以Ce0 5Zr0 5O2 为载体 ,采用浸渍法负载不同含量的CuO ,用色谱流动法考察其对CO的氧化活性。并用XRD ,TPR和BET等技术对CuO/Ce0 5Zr0... 以硝酸铈和硝酸锆为原料 ,采用共沉淀法制备了不同摩尔比 (X =0 ,0 1,0～ 1 0 )的CexZr1 xO2 样品。并以Ce0 5Zr0 5O2 为载体 ,采用浸渍法负载不同含量的CuO ,用色谱流动法考察其对CO的氧化活性。并用XRD ,TPR和BET等技术对CuO/Ce0 5Zr0 5O2 各样品进行了表征 ,结果表明 ,当CuO负载量为 10 0 %时 ,催化剂CO的氧化活性最高 ;XRD测定表明催化剂氧化活性的高低与铜物种在Ce0 5Zr0 5O2 上的分散状态有关 ;TPR结果亦显示活性的高低与Ce0 5Zr0 5O2 展开更多
关键词 CexZr1-xO2复合氧化物 CuO/Ce0.5Zr0.5O2催化剂 分散状态 CO氧化活性
暂未订购 下载PDF
Effect of Ce3+ on spectral characteristic of D1/D2/Cytb559 complex from spinach 认领 引用 被引量：7
10
作者 洪法水 王雪峰 +5 位作者 刘超 苏国兴 宋卫平 吴康 陶冶 赵贵文 《Science China Chemistry》 CAS 2003年第1期42-50,共9页
It was studied by spectroscopy that PSII reaction center complex consisting of three polypeptides, D1, D2 and Cytb559, were purified from PSII particle of CeCl3 treated spinach. The results of the experiment show that... It was studied by spectroscopy that PSII reaction center complex consisting of three polypeptides, D1, D2 and Cytb559, were purified from PSII particle of CeCl3 treated spinach. The results of the experiment show that Ce3+ could improve the growth of spinach, and accelerate electron transport of PSII particles. Of chl-a of UV-Vis spectrum of D1/D2/Cytb559 complex, Soret band was blue-shifted by 3 nm and Q band by 2 nm, respectively, and the fluorescence emission peak was blue-shifted by 5 nm in CeCl3-treated spinach compared with the one in control. By the extended X-ray absorption fine structure (EXAFS) spectroscopy methods, it has been found that Ce3+ is coordinated with 8 nitrogen atoms in the first coordination shell with Ce-N bond length of 0.253 nm, and Ce3+ with 6 oxygen atoms in the second coordination shell with Ce-O bond length of 0.32 nm. However, the secondary structure of D1/D2/Cytb559 complex by circular dichroism (CD) spectroscopy has no significant change after CeCl3 treated. It might be that Ce3+ binds to porphyrin rings of chlorophyll and oxygen of amino acid residue of polypeptide in D1/D2/Cytb559 complex, and then accelerates the primary reaction of PSII, intensifies function of P680+ primary electron donor of D1/D2/Cytb559, but there is little change in conformation of PSII reaction center complex. 展开更多
关键词 Ce3+, spinach, D1/D2/Cytb559 complex, photosynthesis, spectra characteristic.
暂未订购 下载PDF
4-硝基氮氧化吡啶-2-甲酸构筑的镧、镨配合物的合成、晶体结构及荧光性质 认领 引用 被引量：2
11
作者 黄妙龄 陈亮莹 +2 位作者 赵俞秉 谭欣宇 叶梦月 《人工晶体学报》 CAS 北大核心 2023年第1期125-131,共7页
选择刚性有机化合物4-硝基氮氧化吡啶-2-甲酸(POA)作为配体,与稀土金属La(III)、Pr(III)反应,合成了2个一维配位聚合物。X射线单晶衍射结果表明:配合物1的分子式为{[La(POA)3H2O]·CH3OH}n,属于单斜晶系,空间群是P21/c... 选择刚性有机化合物4-硝基氮氧化吡啶-2-甲酸(POA)作为配体,与稀土金属La(III)、Pr(III)反应,合成了2个一维配位聚合物。X射线单晶衍射结果表明:配合物1的分子式为{[La(POA)3H2O]·CH3OH}n,属于单斜晶系,空间群是P21/c。该晶胞参数分别为a=1.7568 nm,b=0.6636 nm,c=2.0486 nm,α=90°,β=96.96°,γ=90°,V=2.3707 nm3,Mr=738.28。配合物2的分子式为{[Pr(POA)3H2O]·H2O}n,属于单斜晶系,空间群是P21/c。该晶胞参数分别为a=1.7578 nm,b=0.6569 nm,c=2.0467 nm,α=90°,β=97.20°,γ=90°,V=2.3448 nm3,Mr=726.25。两个配合物的配位单元组成和结构相似,中心离子都处于稍变形的三帽三棱柱的配位环境中。通过红外光谱、紫外光谱、热重分析仪和荧光光谱仪对两个配合物的性质进行表征。荧光分析表明,配体和配合物均有较强的荧光性能。 展开更多
关键词 稀土配合物 镧系配合物 镨系配合物 4-硝基氮氧化吡啶-2-甲酸 晶体结构 荧光性质
暂未订购 下载PDF
含能配合物[Cu_3(C_4H_2N_6O_5)_3(H_2O)_3]·5NMP的合成、晶体结构及性能(英文) 认领 引用 被引量：3
12
作者 刘进剑 刘祖亮 成健 《含能材料》 EI CAS CSCD 北大核心 2014年第2期177-181,共5页
合成了一种2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)的含能配合物[Cu3(C4H2N6O5)3(H2O)3]·5NMP,并通过红外、元素分析、差示扫描量热法(DSC)、热重分析(TG)等对配合物的结构进行了分析。此Cu(II)配合物属三斜晶系,空间群为P-... 合成了一种2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)的含能配合物[Cu3(C4H2N6O5)3(H2O)3]·5NMP,并通过红外、元素分析、差示扫描量热法(DSC)、热重分析(TG)等对配合物的结构进行了分析。此Cu(II)配合物属三斜晶系,空间群为P-1。用Kissinger和Ozawa法计算了配合物的放热过程的表观活化能,计算值为161 kJ·mol-1。同时研究了此配合物对高氯酸铵(AP)热分解催化效果的影响。结果表明,此配合物可以使AP的高温分解峰温提前98.363℃,使分解速度加快,对AP具有非常显著的催化效果。 展开更多
关键词 无机化学 2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105) 含能配合物[Cu3(C4H2N6O5)3(H2O)3]·5NMP 晶体结构 高氯酸铵 催化性能
暂未订购 下载PDF
LLM-105 Pb(Ⅱ)含能配合物的合成及对AP的热分解催化作用 认领 引用 被引量：1
13
作者 施群荣 刘祖亮 +3 位作者 成健 赵凤起 徐司雨 沈盼盼 《爆破器材》 CAS 2015年第4期19-23,共5页
合成了2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)Pb(Ⅱ)含能配合物,采用FT-IR和元素分析表征并分析了其结构,该含能盐分子式为Pb(C4H2N6O5)。测试了LLM-105 Pb(Ⅱ)含能配合物的撞击感度和摩擦感度,感度值分别为102 cm和18%。采用TG-... 合成了2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)Pb(Ⅱ)含能配合物,采用FT-IR和元素分析表征并分析了其结构,该含能盐分子式为Pb(C4H2N6O5)。测试了LLM-105 Pb(Ⅱ)含能配合物的撞击感度和摩擦感度,感度值分别为102 cm和18%。采用TG-DTG和DSC技术研究了LLM-105 Pb(Ⅱ)含能配合物的热分解行为,配合物有一个分解放热峰,峰温为240.7℃,热分解剩余残渣量为56.2%。采用TG-DTG和DSC技术研究了LLM-105 Pb(Ⅱ)含能配合物对高氯酸铵(AP)热分解的催化作用,结果表明:LLM-105 Pb(Ⅱ)含能配合物可使AP热分解速度加快,高温分解峰温提前63.8℃,对AP的热分解具有良好的催化效果。 展开更多
关键词 2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105) 含能配合物 热分解行为 高氯酸铵(AP) 催化
暂未订购 下载PDF
α,ω-双(2,6-二甲基羟苯基)聚苯醚树脂 认领 引用 被引量：1
14
作者 王佳丽 王洛礼 +1 位作者 徐庆玉 刘应玖 《热固性树脂》 CAS 2005年第4期32-35,共4页
论述了α,ω-双(2,6-二甲基羟苯基)-聚(2,6-二甲基-1,4-酚氧)(PPO-2OH)型聚苯醚的通用及新型合成方法。这些方法是以2,6-二甲基苯酚通过铜铵络合催化的氧化聚合为基础。通过合成方法的改性可以得到低分子质量双端羟基聚苯醚(PPO-2OH)。... 论述了α,ω-双(2,6-二甲基羟苯基)-聚(2,6-二甲基-1,4-酚氧)(PPO-2OH)型聚苯醚的通用及新型合成方法。这些方法是以2,6-二甲基苯酚通过铜铵络合催化的氧化聚合为基础。通过合成方法的改性可以得到低分子质量双端羟基聚苯醚(PPO-2OH)。概述了各种合成PPO-2OH的方法,例如2,6-二甲基苯酚(DMP)同四甲基双酚A(TMBPA)氧化共聚;单官能团PPO和3,3,5,5-四甲基联苯二醌(TMDPQ)反应;单官能团PPO同甲醛缩合反应,论述了PPO-2OH的改性方法,如引入烯丙基基团,同其他热固性树脂共混改性和互穿聚合物网络如环氧树脂等。还介绍了此种分子质量端羟基聚苯醚的工业应用。 展开更多
关键词 聚苯醚 氧化聚合 铜氨络合物
暂未订购 下载PDF
Novel nervous and multi-system regenerative therapeutic strategies for diabetes mellitus with mTOR 认领 引用 被引量：14
15
作者 Kenneth Maiese 《Neural Regeneration Research》 SCIE CAS CSCD 2016年第3期372-385,共14页
Throughout the globe,diabetes mellitus（DM） is increasing in incidence with limited therapies presently available to prevent or resolve the significant complications of this disorder.DM impacts multiple organs and af... Throughout the globe,diabetes mellitus（DM） is increasing in incidence with limited therapies presently available to prevent or resolve the significant complications of this disorder.DM impacts multiple organs and affects all components of the central and peripheral nervous systems that can range from dementia to diabetic neuropathy.The mechanistic target of rapamycin（m TOR） is a promising agent for the development of novel regenerative strategies for the treatment of DM.m TOR and its related signaling pathways impact multiple metabolic parameters that include cellular metabolic homeostasis,insulin resistance,insulin secretion,stem cell proliferation and differentiation,pancreatic β-cell function,and programmed cell death with apoptosis and autophagy.m TOR is central element for the protein complexes m TOR Complex 1（m TORC1） and m TOR Complex 2（m TORC2） and is a critical component for a number of signaling pathways that involve phosphoinositide 3-kinase（PI 3-K）,protein kinase B（Akt）,AMP activated protein kinase（AMPK）,silent mating type information regulation 2 homolog 1（Saccharomyces cerevisiae）（SIRT1）,Wnt1 inducible signaling pathway protein 1（WISP1）,and growth factors.As a result,m TOR represents an exciting target to offer new clinical avenues for the treatment of DM and the complications of this disease.Future studies directed to elucidate the delicate balance m TOR holds over cellular metabolism and the impact of its broad signaling pathways should foster the translation of these targets into effective clinical regimens for DM. 展开更多
关键词 Akt AMP activated protein kinase(AMPK) apoptosis Alzheimer’s disease autophagy β-cell cancer cardiovascular disease caspase CCN family diabetes mellitus epidermal growth factor erythropoietin fibroblast growth factor forkhead transcription factors Fox O FRAP1 hamartin(tuberous sclerosis 1)uberin(tuberous sclerosis 2)(TSC1/TSC2) insulin mechanistic target of rapamycin(mTOR) m TOR Complex 1(m T ORC1) m TOR Complex 2(m TORC2) nicotinamide nicotinamide adenine dinucleotide(NAD+) non-communicable diseases oxidative stress phosphoinositide 3-kinase(PI 3-K) programmed cell death silent mating type information regulation 2 homolog 1(Saccharomyces cerevisiae)(SIRT1) sirtuin stem cells wingless Wnt Wnt1 inducible signaling pathway protein 1(WISP1)
暂未订购 下载PDF
配体二吡啶胺单氧化物的配位多样性(英文) 认领 引用
16
作者 曾锡瑞 彭旭明 李锦祥 《井冈山大学学报（自然科学版）》 2010年第2期12-17,共6页
本文报道了以二吡啶胺单氧化物为配体的三个铜配合物的合成和X-射线衍射数据分析。在不同配位条件下,二吡啶胺单氧化物显示了配位多样性,配体酰胺上的氢原子发生转移或者消除,分子骨架在顺式和反式之间变换。此外,还发现了一个不同寻常... 本文报道了以二吡啶胺单氧化物为配体的三个铜配合物的合成和X-射线衍射数据分析。在不同配位条件下,二吡啶胺单氧化物显示了配位多样性,配体酰胺上的氢原子发生转移或者消除,分子骨架在顺式和反式之间变换。此外,还发现了一个不同寻常的分子构型转换现象。 展开更多
关键词 配位化学 结构分析 二吡啶胺单氧化物 配位多样性 铜配合物
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈