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high-silica
相关语句
  高硅
     They are high-silica (SiO2> 71%), peraluminous (A/NKC> 1.0) and rich in incompatible elements (Rb, Zr, U, W and Sn) and have weak Ce (δCe = 0.68-0.82) and strong Eu (δEu = 0.01-0.38) negative anomalies.
     它们具有高硅(SiO_2>71%)、过铝质(AINKC>1.0)、富不相容元素(铷、锆、铀、钨、锡)、弱的铈(δCe=0.68-0.82)和强的铕(δEu=0.01-0.38)负异常;
短句来源
     C HPDEC MAS NMR, adsorption and TG/DTG/DTA were used to investigate a high-silica Na-THF-FER zeolite synthesized in the reactant system of tetrahydrofuran (THF)-Na 2O-SiO 2-Al 2O 3-H 2O, H-THF-FER zeolite obtained by acid-exchange, and the THF absorbed in Na-FER and H-FER zeolite.
     用1 3CHPDECMASNMR与热分析方法表征了在四氢呋喃 (THF) Na2 O SiO2 Al2 O3 H2 O体系中水热合成的高硅Na THF FER沸石、酸交换后的H THF FER沸石以及吸附于Na FER和H FER沸石中的THF .
短句来源
     Synthesis of High-silica SAPO-34 and Polytetrafluoroethylene Composite Material
     高硅SAPO-34与聚四氟乙烯复合材料的合成
短句来源
     SYNTHESIS AND CHARACTERIZATION OF HIGH-SILICA (K,Na)-ZSM-48 IN NONAQUEOUS SYSTEM
     非水体系高硅Na~i/K-ZSM-48的合成及其表征
短句来源
     EFFECT OF ACID BEHAVIOR OF V2O5,/HIGH-SILICA ZEOLITES ON VAPOR PHASE OXIDATION OF TOLUENE
     V_2O_5/高硅分子筛的酸性与甲苯气相选择氧化
短句来源
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  “high-silica”译为未确定词的双语例句
     The CBF/S-157 composite was compared with high-silica glass fiber(HSGF) /S-157 composite which showed that flexural properties of CBF/S-157 composite were better than HSGF/S-157 composite and ablative properties of the former was similar to the latter.
     CBF/S-157复合材料和HSGF/S-157复合材料的烧蚀性能相近,但前者的弯曲性能明显好于后者。
短句来源
     Drawing process of high-silica glass fiber using platinun-substituted bushing furnace with 200 nozzles
     高硅氧200孔代铂炉拉丝工艺试验与研究
短句来源
     Study on Preparation and Application of Doped High-Silica Glasses
     掺杂高硅氧玻璃的制备和应用
短句来源
     Preparation and application of doped high-silica glasses are briefly reviewed
     详细描述了掺杂高硅氧玻璃的制备工艺及研究进展,并简要介绍了它们的主要应用。
短句来源
     CHARACTERISTICS OF THE HIGH-SILICA MANGANESE ORES AND THEIR INDUSTRIAL UTILIZATION IN LAOWU MANGANESE DEPOSIT,WENSHAN COUNTY
     文山老乌锰矿高硅锰矿石特征及其工业利用
短句来源
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  相似匹配句对
     high vvearability.
     耐磨性高.
短句来源
     the value of E was high;
     反应活化能较高;
短句来源
     O - resistance is high.
     后者化验:血沉明显增快,抗“O”增高。
短句来源
     high-technology;
     产业高技术化;
短句来源
     Silica,10;
     白炭黑,10;
短句来源
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  high-silica
Geochemically, the Guangtoushan biotite plagiogranites show many close compositional similarities to high-silica adakites from the supra-subduction zone setting, but tend to have a higher concentration of K2O (3.22%-3.84%).
      
Selectivity of Low- and High-Silica Clinoptilolites with Respect to Alkali and Alkaline-Earth Metal Cations
      
The high-silica (in the native state, sodium-potassium form) clinoptilolites were shown to have the increased selectivity with respect to K+ ions, whereas the low-silica (in the native state, calcium form) clinoptilolites to Ca2+ ions.
      
In high-silica glasses, the metastable phase separation followed by the bulk multiphase crystallization are observed at temperatures close to the glass transition point Tg.
      
In this case, each region has a heterogeneous structure and consists of NaNbO3 microcrystals surrounded by layers of the high-silica matrix.
      
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High silica zeolites were synthesized from the amorphous aluminum silicate in the presence of ammonium hydroxide and sodium hydroxide. Effects of the compositions of starting materials and the temperature and time of crystallization were investigated. Zeolites of ZSM series with ratio of SiO2/Al2O3 around 30-70 could be obtained.

在不添加晶种的条件下,以无定形硅酸铝、氢氧化铵和氢氧化钠为原料,研究了原料组成及晶化温度和晶化时间等对高硅沸石合成的影响,得到了硅铝比为30—70的无机铵型ZSM系高硅沸石。

Some of Chinese kaolin have been used for preparing Y type zeolite.The process is characterized by high solid to liquid ratio and recycling of mother liquor.The Y type zeolite thus produced has high silica to alumina ratio and excellent cracking activity.The effects of composition of reactants on the reaction are studied and discussed.

试用多种国产高岭土,经过简单处理及焙烧后,在碱液中直接转化以制备Y型沸石.与化工原料凝胶法相比,本法可达到较高的投料浓度(基数高)和产量,且母液中大量的Na_2O及SiO_2均可回收利用.高岭土制成的高硅Y型沸石用氯化稀土交换并制成催化剂,具有较高的催化裂化活性.反应物组成对晶化速度与产物硅铝比的影响以Na_2O/SiO_2最显著.

Treating the uraniferous coal ash by conventional acid leach process, uranium extraction can reach up to 97%. But the subsequent liquid-solid separation and solvent extraction operations are difficult because of high silica concentration (about 20g/l) and a certain amount of fiouride ions present in the leached solution. In order to decrease silica concentration and improve on properties of leached slurry, the palletizing with concentrated acid and curing process are studied.

采用常规酸浸法处理某含铀煤灰时,铀浸出率可达97%。但是,浸出液中SiO_2浓度太高(约20克/升),并含有一定量的氟离子,对随后的液固分离和萃取操作带来了一定困难。为了降低浸出液中硅浓度,改善矿浆性能,对煤灰进行了浓酸造粒熟化的研究。 本文给出了用浓酸造粒熟化法处理煤灰的实验结果,讨论了煤灰浓酸造粒熟化过程中酸用量、熟化温度、时间、水浸条件诸因素对浸出液的SiO_2浓度的影响,比较了常规酸浸法与浓酸造粒熟化法两种浸出液的特性。实验结果表明,浓酸造粒熟化可大幅度地降低煤灰浸出液中的硅浓度,改善矿浆性能,为进一步加工提供有利条件。

 
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