助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   transition metallic ion 的翻译结果: 查询用时:0.182秒
图标索引 在分类学科中查询
所有学科
有机化工
更多类别查询

图标索引 历史查询
 

transition metallic ion
相关语句
  过渡金属离子
     Study on Complexing of Alkyl Polyamine with Transition Metallic Ion Cu(Ⅱ)
     烷基多胺与过渡金属离子Cu(Ⅱ)的络合研究
短句来源
     A series of chitosan resins with different degree of crosslinking were synthesized by the method as follows:Chitosan (CTS) first reacts with transition metallic ion(C u 2+ or N i 2+ ) then with crosslinking agent ECH, the chitosan-metal chelates was obtained. On desorbing the metallic ion from the chelate by dilute acid, the target resin(Ⅰ Ⅳ) were gained.
     采用先使壳聚糖(CTS)与过渡金属离子(Cu2+或Ni2+)形成配合物,然后在稀碱条件下用环氧氯丙烷(ECH)进行交联,最后用稀酸除去金属离子的方法,合成了一系列(Ⅰ~Ⅵ)具有不同交联度的壳聚糖树脂,研究了该系列树脂对Cu2+、Ni2+的静态吸附性能。
短句来源
  相似匹配句对
     DUCTILE-BRITTLE TRANSITION OF METALLIC GLASSES AND ITS KINETICS
     金属玻璃体的延脆转变及其动力学
短句来源
     METALLIC HYDROGEN——TRANSITION PRESSURES AND PHYSICAL PROPERTIES
     金属氢——转变压力和物理性质
短句来源
     The Quantum Calculation for the Structural Rule of the Transition Metallic Heteroboranes
     过渡金属杂硼烷结构规则的量子化学计算
短句来源
     Optical Properties and Applications of Transition Metallic Ultrathin Films
     过渡金属超薄膜的光学性质及其应用
短句来源
     The "metallic semiconductive conductivity transition" was observed for both of them.
     并观察到它们均存在“金属—半导”性转变。
短句来源
查询“transition metallic ion”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
没有找到相关例句


The binding of metallic ions andthe probability of bridging metallicions with doxycycline hyclate andamino-acids were studied. The proba-bility of formation of binary complexesbetween Zn(Ⅱ), Cu(Ⅱ), Ni(Ⅱ),Co(Ⅱ) and Mn(Ⅱ) ions and doxycyclinehyclate or DL-α-alanine was studiedby the potentiometric method. Theexperimental results showed that stablebinary complexes were formed betweendoxycycline hyclate and certain metal-lic ions,and more stable ternary mixedligand complexes were formed in...

The binding of metallic ions andthe probability of bridging metallicions with doxycycline hyclate andamino-acids were studied. The proba-bility of formation of binary complexesbetween Zn(Ⅱ), Cu(Ⅱ), Ni(Ⅱ),Co(Ⅱ) and Mn(Ⅱ) ions and doxycyclinehyclate or DL-α-alanine was studiedby the potentiometric method. Theexperimental results showed that stablebinary complexes were formed betweendoxycycline hyclate and certain metal-lic ions,and more stable ternary mixedligand complexes were formed in thepresence of DL-α-alanine. Ionizationconstant of DL-α-alanine, stabilityconstants of certain transition metallicions Zn(Ⅱ), Cu(Ⅱ), Ni(Ⅱ), Co(Ⅱ)and Mn(Ⅱ)-DL-α-alanine binary com-plexes, and stability constants of cer-tain transition metallic ions (Zn(Ⅱ),Cu(Ⅱ), Ni(Ⅱ), Co(Ⅱ) and Mn(Ⅱ))-doxycycline hyclate-DL-α-alanineternary mixed ligand complexes hadbeen determined in aqueous solutionat 20± 1°C and 0.01 ionic strength(KNO_3) by the potentiometric method.The stability constants of the ternarymixed ligand complexes are higherthan those of the binary complexes;and in the former Cu(Ⅱ)-doxycyclinehyclate-DL-α-alanine system is muchmore stable.

用pH电位法分别测丙氨酸的电离常数、丙氨酸与Zn(Ⅱ)、Cu(Ⅱ)、Ni(Ⅱ)、Co(Ⅱ)和Mn(Ⅱ)金属离子二元络合物的稳定常数,以及上述金属离子—强力霉素—丙氨酸三元混配络合物的稳定常数。三元络合物比二元络合物稳定。

A cellulose graft copolymer(CGC)was synthesized by initiated graft copolymerization of vinyl monomers onto modified cellulose in aqueous solution using ceric or other transition metallic ions.The percent grafting amounts to 80% and over.The effects of the CGC on fluid loss,rheological behavior,free water,thickening time of cement slurries were stud- ied.The results show that the heat resistance,resistace to microorganisms attack,fluid loss control and dispersive power of CGC are very well.The fluid loss...

A cellulose graft copolymer(CGC)was synthesized by initiated graft copolymerization of vinyl monomers onto modified cellulose in aqueous solution using ceric or other transition metallic ions.The percent grafting amounts to 80% and over.The effects of the CGC on fluid loss,rheological behavior,free water,thickening time of cement slurries were stud- ied.The results show that the heat resistance,resistace to microorganisms attack,fluid loss control and dispersive power of CGC are very well.The fluid loss control property of CGC is much better than that of Halad 22A,Halliburton Co.

本文以水为溶剂,以铈盐或其他变价金属离子为引发剂,在反应温度0±1℃下,使纤维素与乙烯类单体共聚,制得纤维素接枝共聚反应产物,接枝率高达80%以上。就所得共聚产物对水泥浆流变性、稳定性、失水量、稠化时间等性能的影响进行了研究。结果证明,经接枝改性的纤维素具有更好的耐热性和耐微生物酶解性,对水泥浆有良好的降失水性和分散性,与其他外加剂相容性好,降失水性超过美国哈里伯顿公司的水泥浆降失水剂 Halad 22A,是一种新型水泥浆降失水剂。

The results of α- olefin hydroformylation catalysed by ruthenium and bimetallic catalysts supported on zeolite made by cation-exchange of Na+ in zeolite with Ru3+ in aqueous RuCl3 has been reported. The effects of solvent, zeolite support, α-olefin and another transition metallic ion on ruthenium catalyst supported on zeolite have been examined. With increasing polarity of the solvents, the activity and selectivity of Ru/NaX catalyst on hydroformylation increase. When ZSM-5 zeolite is used as support,...

The results of α- olefin hydroformylation catalysed by ruthenium and bimetallic catalysts supported on zeolite made by cation-exchange of Na+ in zeolite with Ru3+ in aqueous RuCl3 has been reported. The effects of solvent, zeolite support, α-olefin and another transition metallic ion on ruthenium catalyst supported on zeolite have been examined. With increasing polarity of the solvents, the activity and selectivity of Ru/NaX catalyst on hydroformylation increase. When ZSM-5 zeolite is used as support, electron donor DMF or pyridine as the solvent and cation- exchanging Rh3+ or Sn2+ into NaX zeolite, the ruthenium catalysts supported on zeolite have good activity and selectivity. The ratio of Ru to Co, the amount of the catalyst used and running time affect the activity and selectivity of the bimetallic Ru/Co/NaX catalyst remarkably. Under 200℃ , 6. 0 MPa(CO/H2= 1) Ru/Co/NaX(Ru/Co=4/2) catalyst precarbonylated in toluene has the best activity and selectivity. Catalysts used in various conditions were characterized by FT-IR etc. after reaction. FT-IR spectra show that each of the catalysts contains at least one absorbing peak above 2000 cm-1 and one below it , so it is suggested that Ru/S (S = zeolite support) catalyst has turned into Rux(CO)y/S in the reaction process, which contains both the terminal carbonyl and the bridging carbonyl. By analysis of the results of catalyst characterization, it is suggested that the bridging carbonyl in the Rux(CO)Y/S catalyst may be the main active centre in the hydroformylation processes.

研究了以离子交换法制备的分子筛负载钌及钌双金属催化剂催化。α-烯烃氢甲酰化反应的催化性能。考察了反应溶剂、分子筛、α-烯烃及其它金属对负载钌催化剂的催化性能影响,对Ru/Co/NaX催化剂考察了负载量、用量及反应时间的影响。使用ZSM-5分子筛载体、碱性DMF和吡啶为溶剂有利于提高催化剂的活性和选择性,含Rh和Sn的双金属催化剂活性和选择性很高,FT-IR特征吸收谱图证实,催化剂于反应条件下转变成Ru_x(CO)_Y/分子筛形式,既含有端羰基又含有桥羰基,其中桥羰基可能是氢甲酰化活性的主要部分。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关transition metallic ion的内容
在知识搜索中查有关transition metallic ion的内容
在数字搜索中查有关transition metallic ion的内容
在概念知识元中查有关transition metallic ion的内容
在学术趋势中查有关transition metallic ion的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社