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
   最大分散量 的翻译结果: 查询用时:0.294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
 

最大分散量
相关语句
  maximum dispersion capacity
     XRD,TPR and catalytic performance evaluation were used to study influence of promotors on the maximum dispersion capacity and catalytic performance of the supported nickel catalysts for CO 2-reforming of CH 4 to syngas.
     应用XRD、TPR和催化活性评价手段 ,考察了助剂对CH4 与CO2 重整制合成气的负载型Ni催化剂的最大分散量和其催化性能的影响。
短句来源
     XRD,TPR and catalytic performance evaluation were used to study influence of promotors on the maximum dispersion capacity and catalytic performance of supported nickel catalysts for CO 2-reforming of CH 4 to syngas.
     应用XRD、TPR和催化活性评价手段 ,考察了助剂对CH4 与CO2 重整制合成气的负载型Ni催化剂的最大分散量和其催化性能的影响 .
短句来源
     The experimental result shows that the maximum dispersion capacity of NiO on the γ-Al_2O_3 surface increases to some degree with the addition of promotors of MgO, La_2O_3, the promotors had influence on the catalytic performance of supported—Ni catalysts, MgO and La_2O_3 added into NiO/γ-Al_2O_3 catalyst could markedly improve its reforming activity as well as its resistance to carbon deposition, with some contribution from type and additional order of promotors.
     实验结果表明,NiO在Υ-Al_2O_3表面上最大分散量随MgO、La_2O_3助剂的添加不同程度地增大,助剂能影响负载型Ni催化剂的催化性能,MgO、La_2O_3的添加对改善Ni催化剂的重整活性和抗积炭性能有明显效果,并与助剂的种类、添加次序有关。
短句来源
  “最大分散量”译为未确定词的双语例句
     Dispersion and Thresholds for WO_3 on Complex Supports of TiO_2/γ-Al_2O_3 and TiO_2/SiO_2
     WO_3在TiO_2/γ-Al_2O_3和在TiO_2/SiO_2复合载体表面的分散状态和最大分散量
短句来源
     The maximum dispersion amount of α-Fe_2O_3 on NaY zeolite measured with XRD quantitative phase analysis is 0.060 gα-Fe_2O_3/gNaY, which is only 5.5% of the monolayer capacity of α-Fe_2O_3 on NaY according to a close-packed monolayer model.
     经XRD相定量外推法测定,α-Fe_2O_3在NaY沸石上的最大分散量为0.060gα-Fe_2O_3/gNaY,仅占α-Fe_2O_3在沸石表面密置单层量的5.5%。
短句来源
     Dispersion Capacity of α-Fe_2O_3 on Mesoporous Molecular sieve MCM-41
     α一Fe_2O_3在介孔分子筛MCM一41上的最大分散量
短句来源
     DETERMINATION OF THE MAXIMUM MONOLAYER DISPERSION AND DISPERSED STATE FOR WO_3 ON γ-Al_2O_3
     WO_3在γ-Al_2O_3表面的分散状态和最大分散量
短句来源
     when Fe(NO3)3·9H2O was used as raw material,the dispersion capacity is 0.58g α-Fe2O3/g MCM-41;
     当以硝酸铁为铁源时 ,α -Fe2 O3 最大分散量为 0 .5 8gα -Fe2 O3 /gMCM - 41;
短句来源
更多       
  相似匹配句对
     Largest Passenger-capacity Cruise Ship Ordered
     载客的超级游轮
短句来源
     e00 file spatial data amount is the most large in several vector formats.
     e00格式的数据
短句来源
     The optimal temperature and pH were 4℃ and 2 respectively.
     4℃时其结合
短句来源
     the maximum fight altitude;
     飞行高度 ;
短句来源
     The Maximum Alternative-Flow
     并流
短句来源
查询“最大分散量”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。
  maximum dispersion capacity
Phase analysis by XRD measurements demonstrated that there was a threshold value in the indium content, i.e., the maximum dispersion capacity of indium oxides.
      
All the results collected seem basically consistent with a value of about 2.5-3 atomCu nm-2 for the maximum dispersion capacity of CuO on the ETS-10 matrix.
      


Crystalline MoO3 and γ-Al2O3 carrier were mixed thoroughly and the mixture was calcined at an appropriate temperature below the melting point of MoO3, e.g. 400℃, 24 hours. If the quantity of MoO3 added is lower than a threshold value, after calcination the X-ray diffraction (XRD) peaks of crystalline MoO3 disappear; if the quantity is higher than that value, the peaks do not disappear due to the residual crystalline MoO3. The content of such residual MoO3 could be determined by the XRD procedure. A maximum dispersion...

Crystalline MoO3 and γ-Al2O3 carrier were mixed thoroughly and the mixture was calcined at an appropriate temperature below the melting point of MoO3, e.g. 400℃, 24 hours. If the quantity of MoO3 added is lower than a threshold value, after calcination the X-ray diffraction (XRD) peaks of crystalline MoO3 disappear; if the quantity is higher than that value, the peaks do not disappear due to the residual crystalline MoO3. The content of such residual MoO3 could be determined by the XRD procedure. A maximum dispersion of 0.12g/100m2 of MoO3 on γ-Al2O3 surface was observed, it agrees with the result (0.117g/100m2) calculated from the model on the assumption that MoO3 is a closed monolayer on γ-Al2O3 surface. This method may also be used to determine the maximum dispersion of other compounds on carriers with considerable specific surface.

晶相MoO_3与载体γ-Al_2O_3充分混合后,在低于MoO_3熔点的适当温度下焙烧(例如400℃焙烧24小时),当MoO_3含量低于某一数值时,MoO_3晶相的X光衍射峰完全消失;MoO_3含量高于该数值时,晶相峰并不消失,但强度减弱。用X光衍射可测定焙烧后MoO_3的残余晶相量,进而可得到MoO_3在γ-Al_2O_3表面的最大分散量为0.12克/100米~2。这与按密置单层排布的模型计算所得到的理论量0.117克/100米~2非常一致。本文方法也适用于其它化合物在载体表面最大分散量的测定。

The monolayer dispersion capacities of MoO3 on γ-Al2O3 (or η A12O3) of different kinds with different specific surface, which were made from boehmite,bayerite and gibbsite, calcined at different temperatures were determined by XRD and specific surface measurement. Their values are nearly the same (around 0.12-0.13 g MoO3/100 m2 surface of γ-Al2O3) and close to 0.117 g MoO3/100m2 surface of r-A12Q3 calculated from a close-packed monolayer model (see Fig. 1-3 and Table 1). Samples of MoO3/Al2O3 prepared by impregnation...

The monolayer dispersion capacities of MoO3 on γ-Al2O3 (or η A12O3) of different kinds with different specific surface, which were made from boehmite,bayerite and gibbsite, calcined at different temperatures were determined by XRD and specific surface measurement. Their values are nearly the same (around 0.12-0.13 g MoO3/100 m2 surface of γ-Al2O3) and close to 0.117 g MoO3/100m2 surface of r-A12Q3 calculated from a close-packed monolayer model (see Fig. 1-3 and Table 1). Samples of MoO3/Al2O3 prepared by impregnation method or by heating the mixture of MoO3 and A12O3 gave the similar results (see Fig. 4, 5). The specific surface and pore volumes of MoO3/γ-Al2O3 systems determined also support the close-packed monolayer model, because the specific surfaces or pore volumes per gram r-Al2O3 keep on almost no change as the amounts of MoO3 in MoO3/γ-Al2O3 samples exceed the monolayer dispersion capacity (see Fig. 6-8). It is suggested that the specific surface of γ-Al2O3 (or Al2O3) can be obtained from the XRD determination of the monolayer dispersion capacity of MoO3 on the γ-Al2O3 (or η-A12O3).

MoO_3与不同制备方法和来源的γ-Al_2O_3(包括η-Al_2O_3)干混、焙烧制备的样品,或者用浸渍、焙烧制备的样品,通过X光衍射测得的MoO_3最大分散量都与按密置单层模型计算得到的结果(每100米~2γ-Al_2O_3表面0.117克MoO_3,即4.9×10~(18)Mo原子/米~2)相近。这样可以通过X光衍射测定MoO_3在每克γ-Al_2O_3上的最大分散量而得到γ-Al_2O_3的比表面。比表面和孔容的研究结果也支持MoO_3在γ-Al_2O_3表面呈密置单层分散的模型。

The systems of MoO3/TiO2, MoO3/SiO2 and MoO3/MgO, by mixing crystalline MoO3 with one of these carriers respectively and then being calcined at appropriate temperature, have been studied by X-ray diffraction. The results show that MoO3 disperses on titania surface as a close-packed monolayer, the experimental maximum dispersion capacity (the threshold value) of MoO3 on titania surface is 0.12g MoO3 /100m2 (i. e. 4.9×1018Mo atoms/m2, see Figs. 1,2), which agrees with the calculated value according to a close-packed...

The systems of MoO3/TiO2, MoO3/SiO2 and MoO3/MgO, by mixing crystalline MoO3 with one of these carriers respectively and then being calcined at appropriate temperature, have been studied by X-ray diffraction. The results show that MoO3 disperses on titania surface as a close-packed monolayer, the experimental maximum dispersion capacity (the threshold value) of MoO3 on titania surface is 0.12g MoO3 /100m2 (i. e. 4.9×1018Mo atoms/m2, see Figs. 1,2), which agrees with the calculated value according to a close-packed monolayer model, as in the case of MoO3/γ-Al2O3 system[5]. The experiments also show MoO3 disperses on silica surface as a monolayer but not a close-packed one, its monolayer dispersion capacity is 0.032g MoO3/100m2 (i. e. 1.4×1018 Mo atoms/m2) corresponding to a coverage θ = 0.27 (see Figs. 3 - 5). For MoO3/MgO system, the experiments show that a solid reaction between MoO3 and MgO occurs at 290℃ to form MgMoO4 to some extent in stead of a monolayer dispersion (see Fig. 7). All these systems with the addition of MoO3/γ-Al2O3 system have been compared (see Table 1) and discussed based on the acid-base properties of carriers, their chemical bonds and their structures. MgO, an oxide of ionic bond and rather stronger basicity, reacts with MoO3 forming a bulk compound MgMoO4. However, it is not easy for SiO2, of covalent bond and non-metallic oxide property, to carry out a reaction with MoO3. Both of γ-Al2O3 and TiO2 are in the intermediate case, therefore MoO3 can disperse on them as close-packed monolayers.

用X光衍射研究了MoO_3/TiO_2,MoO_3/SiO_2和MoO_3/MgO等体系。结果表明,MoO_3在TiO_2胶表面呈密置单层分散,其最大分散量(阈值)与按密置单层模型计算的0.117克MoO_3/100米~2(即4.9 × 10~(18)Mo原子/米~2)相符。MoO_3在SiO_2胶表面呈单层分散但非密置单层,其分散阈值为 0.032克MoO_3/100米~2(即 1.4 × 10~(18)Mo原子/米~2)。MoO_3与MgO比较容易进行体相反应,在290℃即已有部分MgMoO_4形成,没有只形成表面单层分散的阶段,因此不存在表面分散阈值,还联系载体的酸碱性、化学键性质以及结构上的差异,对MoO_3/γ-Al_2O_3和上述体系进行了讨论和比较。

 
<< 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最大分散量的内容
在知识搜索中查有关最大分散量的内容
在数字搜索中查有关最大分散量的内容
在概念知识元中查有关最大分散量的内容
在学术趋势中查有关最大分散量的内容
 
 

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