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
   脉冲化学吸附 的翻译结果: 查询用时:0.443秒
图标索引 在分类学科中查询
所有学科
化学
更多类别查询

图标索引 历史查询
 

脉冲化学吸附
相关语句
  pulse chemisorption
     Pt/γ-Al 2O 3 catalysts were prepared by different impregnation methods. The catalysts' distribution models were observed by stereomicroscope. The metal dispersion on the surface of alumina was studied by 5%CO/He pulse chemisorption.
     以不同的浸渍方式制备了Pt/γ -Al2 O3 催化剂 ,通过体视显微镜观察其分布型式 ,用 5 %CO/He脉冲化学吸附法研究了Pt在催化剂颗粒中的分散度 .
短句来源
  “脉冲化学吸附”译为未确定词的双语例句
     STUDY ON CHEMISORPTION OF BENZENE AND TOLUENE ON Cr_2O_3/Al_2O_3 CATALYST BY PULSE-METHOD
     脉冲化学吸附法研究苯和甲苯在Cr_2O_3/Al_2O_3催化剂上的吸附
短句来源
     The influence of Cr2O3 aggregate states and the action of promoter CeO2 on catalytic performance of Cr2O3/Al2O3 catalyst was investigated by XRD, TEM and chemisorption.
     采用XRD,TEM及脉冲化学吸附等方法,研究了γ-Al_2O_3表面上Cr_2O_3晶粒大小和聚集状态及助剂CeO_2对Cr_2O_3/Al_2O_3催化剂活性、选择性及抗炭性能的影响。
短句来源
     % Ru/SiO_2 and 1% Ru/Al_2O_3 catalysts have been studied by CO pulse chemical adsorption,temperature programmed surface reaction(TPSR ) of adsorbed CO and cO + H_2 reaction. The amount of adsorbed CO on both catalysts decreased with the increasing of calcination temperature of catalysts.
     通过CO脉冲化学吸附以及对吸附态CO和co+H_2反应进行程序升温表面反应(TPSR),发现1%Ru/siO_2和1%Ru/AL_2O_3催化剂的CO吸附量随焙烧温度的升高而降低。
短句来源
     H2-TPR,NH3-TPD,pulse adsorption of hydrogen and H2-O2 titration were employed to analyze and correlate the platinum dispersity on Pt/SAPO-11 catalyst with preparation of the catalyst and performance of skeletal isomerization of n-C12 alkane.
     采用H2-TPR、NH3-TPD、H2脉冲化学吸附和H2-O2化学滴定等方法对Pt/SAPO-11催化剂上金属分散进行了表征,并与该催化剂制备因子及其正构烷烃骨架异构化反应性能进行关联。
短句来源
     In the present work, based on the catalytic transformation of n-butane, the bifunctional catalysts have been widely tested and the interaction of the supported metal and the acid support in the bifunctional catalysts has been studied with the techniques such as NH3-TPD, IR, MAS NMR, XPS, XRD, physical adsorption, CO pulse chemical adsorption and TPR. In the catalytic tranformation of n-butane, Pd modified silicoaluminate molecular sieves were tested for n-butane's isomerization and dehydroismerization.
     本论文即以丁烷一步异构脱氢反应为背景,广泛考察了担载金属的分子筛双功能催化剂的反应性能,并借助于NH_3-TPD,IR,MAS NMR,XPS,XRD,物理吸附,CO脉冲化学吸附,TPR等多种现代分析表征手段,深入探讨了双功能催化剂中担载金属与载体之间的相互作用。
短句来源
更多       
  相似匹配句对
     Nickel Plating with Pulsed Current
     脉冲镀镍
短句来源
     Pulse plating of Nickel
     脉冲镀镍
短句来源
     Physisorption and Chemisorption
     物理吸附与化学吸附
短句来源
     The Adsorption and thermal desorption of 2-methyl-butadiene over different degree poisoned catalysts has been studied with the method of pulse chromatogram adsorption.
     用脉冲色谱吸附技术考察了异戊二烯在中毒程度不同的负载Ni催化剂上的化学吸附
短句来源
     CHEMISORPTION ON THE SURFACE OF BIMETALLIC CATALYSTS
     双金属催化剂表面上的化学吸附
短句来源
查询“脉冲化学吸附”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
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  pulse chemisorption
The dispersity of γ-alumina supported rhenium from hydrogen pulse chemisorption
      
Dispersity of Al2O3-SnO2 supported platinum from hydrogen pulse chemisorption
      
Interactions on the surface were investigated as a function of metal loading by temperature‐programmed oxidation (TPO) and oxygen pulse chemisorption (PCO).
      
The catalysts were characterised by N2-physisorption, CO pulse chemisorption and pH measurement of aqueous catalyst slurries.
      
Ru dispersion was measured by CO pulse chemisorption.
      
更多          


The influence of Cr2O3 aggregate states and the action of promoter CeO2 on catalytic performance of Cr2O3/Al2O3 catalyst was investigated by XRD, TEM and chemisorption. It was found that the grain size of Cr2O3 grew up as the Cr2O3 content increased, and there were three types of Cr2O3 state on Al2O3 surface, i.e. the diffused,plates and rods, among which the plate Cr2O3 was the most favourable one for the hydro-dealkylation, the optimum crystal size of Cr2O3 was about 0.0165 μm. Addition of CeO2 to Cr2O3/Al2O3...

The influence of Cr2O3 aggregate states and the action of promoter CeO2 on catalytic performance of Cr2O3/Al2O3 catalyst was investigated by XRD, TEM and chemisorption. It was found that the grain size of Cr2O3 grew up as the Cr2O3 content increased, and there were three types of Cr2O3 state on Al2O3 surface, i.e. the diffused,plates and rods, among which the plate Cr2O3 was the most favourable one for the hydro-dealkylation, the optimum crystal size of Cr2O3 was about 0.0165 μm. Addition of CeO2 to Cr2O3/Al2O3 catalyst led the increase in selectivity, CeO2 was the better anticoking additive as compared with the alkali-promoter.

采用XRD,TEM及脉冲化学吸附等方法,研究了γ-Al_2O_3表面上Cr_2O_3晶粒大小和聚集状态及助剂CeO_2对Cr_2O_3/Al_2O_3催化剂活性、选择性及抗炭性能的影响。当Cr_2O_3含量增高时,Cr_2O_3晶粒逐渐增大,有三种不同聚集态分布在γ-Al_2O_3的表面上,其中晶粒较大、聚集为片状的 Cr_2O_3对临氢脱烷基制苯反应最为有利,Cr_2O_3适宜晶粒与 PyrotolCr_2O_3/Al_2O_3催化剂相近,助剂CeO_2可提高Cr_2O_3/Al_2O_3催化剂的抗炭性能,引入量不宜过多,否则将导致催化剂活性下降。

The XRD of Cr_2O_3/Al_2O_3 catalyst and the chemisorption measurement of benzene and toluene on the same Catalyst by means of pulse method was studied. The results showed that as the Cr_2O_3 content in Catalyst increases, the grain size of Cr_2O_3 on the surface of Al_2O_3 also increases, and the adsorption intensity of benzene and toluene on Catalyst decreases, but the numbersof adsorption center increases gradually. This method can be used for comparison of adorption intensity and the numbers of adsorption...

The XRD of Cr_2O_3/Al_2O_3 catalyst and the chemisorption measurement of benzene and toluene on the same Catalyst by means of pulse method was studied. The results showed that as the Cr_2O_3 content in Catalyst increases, the grain size of Cr_2O_3 on the surface of Al_2O_3 also increases, and the adsorption intensity of benzene and toluene on Catalyst decreases, but the numbersof adsorption center increases gradually. This method can be used for comparison of adorption intensity and the numbers of adsorption center of reacting substances, and product beween oxide catalysts.

XRD和脉冲化学吸附法测定苯和甲苯在Cr_2O_3/Al_2O_3催化剂的化学数据表明,随着催化剂中Cr_2O_3含量的增加,Cr_2O_3在Al_2O_3表面上的晶粒度逐渐变大,苯和甲苯在催化剂上的吸附强度相对也逐渐减弱,而吸附中心的数目呈上升趋势。该法在催化剂的研制和开发工作中可用于比较氧化物催化剂对反应物或产物的相对吸附强度和吸附中心数目。

% Ru/SiO_2 and 1% Ru/Al_2O_3 catalysts have been studied by CO pulse chemical adsorption,temperature programmed surface reaction(TPSR ) of adsorbed CO and cO + H_2 reaction. The amount of adsorbed CO on both catalysts decreased with the increasing of calcination temperature of catalysts. Two diffefent kinds of active sites were proposed according to different TPSR results of CO adsorbed at room temperature and 513K respectively。On the first kind of sites,the interaction between the ruthenium metal and the support...

% Ru/SiO_2 and 1% Ru/Al_2O_3 catalysts have been studied by CO pulse chemical adsorption,temperature programmed surface reaction(TPSR ) of adsorbed CO and cO + H_2 reaction. The amount of adsorbed CO on both catalysts decreased with the increasing of calcination temperature of catalysts. Two diffefent kinds of active sites were proposed according to different TPSR results of CO adsorbed at room temperature and 513K respectively。On the first kind of sites,the interaction between the ruthenium metal and the support was weak, and CO was easier to be adsorbed. On the second kind of sites ,the interaction between metal and support was stronger and CO was more difficult to be adsorberl. Higher calcination temperature of the catalysts led to stronger interaction between metal and support and more sites Ⅰwas formed. The CO hydrogenation in a flow microreactor under medium pressure showed that the catalysts calcined at 673K withhigher activity,larger amount of long chain hydrocarbons and higher ratio of olefin to paraffin than those calcined at 393K. Therefore ,it is suggested that sitesⅠwas responsible for hydrogenation and sites Ⅱ for chain growth.

通过CO脉冲化学吸附以及对吸附态CO和co+H_2反应进行程序升温表面反应(TPSR),发现1%Ru/siO_2和1%Ru/AL_2O_3催化剂的CO吸附量随焙烧温度的升高而降低。且根据513K和室温吸附co的TPSR不同,认为存在两类不同活性中心。Ⅰ类中心:金属钌与载体的相互作用弱,易吸附CO;Ⅱ类中心:金属与载体的相互作用强,较难吸附CO。随焙烧温度升高,金属与载体作用增强,Ⅱ类中心增多。在微型流动反应器上CO中压加氢发现经673K焙烧的样品的活性及长链烃的生成量和烯/烷比均大于120℃烘干的样品,因此认为,Ⅰ类中心为加氢中心,Ⅱ类中心为链增长中心。

 
<< 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脉冲化学吸附的内容
在知识搜索中查有关脉冲化学吸附的内容
在数字搜索中查有关脉冲化学吸附的内容
在概念知识元中查有关脉冲化学吸附的内容
在学术趋势中查有关脉冲化学吸附的内容
 
 

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