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high-specific surface area
相关语句
  高比表面积
     By using the polyacrylonitrile-based (PAN) ACF as a material, through large number of experiments, the ACF Felt with High-specific Surface Area and excellent quality was prepared, The iodine adsorption value of viscosebased ACF prepared through experiment is about 1700 mg/g, the benzene adsorption amount is about 90% and the specific surface area is about 1 800 m2/g.
     以聚丙烯腈为原料,经过大量的实验研究,制备出了性能优异的高比表面积活性炭纤维毡,试验制得的活性炭纤维毡的碘吸附值达到1700 mg/g左右、苯吸附量达到90%左右、比表面积约为1800m2/g.
短句来源
     The adsorption effects of high-specific surface area activated carbon(HSAAC)on phenol in wastewater were discussed and the factors,such as the dosage of activated carbon, pH value, the adsorption time ,the removal rate and others, were reseasched .
     探讨了高比表面积活性炭(HSAAC)吸附水中苯酚时,活性炭用量、pH值和吸附时间等因素对苯酚吸附量和去除率的影响。
短句来源
     Preparation and performance characterization of activated carbon fiber felt with high-specific surface area
     高比表面积活性炭纤维毡的制备及性能表征
短句来源
     STUDY ON FABRICATION OF BAMBOO BASED HIGH-SPECIFIC SURFACE AREA ACTIVATED CARBON
     竹节制备高比表面积活性炭的研究
短句来源
     The results show that the high-specific surface area activated carbon has excellent absorption capacity and can be easily regenerated under the suitable absorption conditions.
     实验结果表明高比表面积活性炭在适宜条件下对Cd(Ⅱ)具有较大的吸附量和良好的再生效果。
短句来源
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  “high-specific surface area”译为未确定词的双语例句
     THE PREPARAION AND ADSORPION FROPERTIES OF HIGH-SPECIFIC SURFACE AREA CARBON MOLECULAR SIEVES
     高比表面积炭分子筛的制备及其吸附特性
短句来源
     PREPARATI0N OF PETROLEUM C0KE BASED ACTIVATED CARBON WITH HIGH-SPECIFIC SURFACE AREA
     石油焦基高比表面积活性炭的制备
短句来源
     The high-specific surface area activated carbon was prepared from mixture of bamboo char which was carbonization in different temperature under isolation air and KOH.
     竹节在隔绝空气的条件下 ,经不同温度炭化处理后与 KOH混合 ,制取竹节基高比表面积活性炭。
短句来源
  相似匹配句对
     high salience.
     (3)“高显著度”。
短句来源
     Its accuracy is high.
     使用模型参数进行孔隙度、含水饱和度计算 ,计算结果精度高。
短句来源
     high-technology;
     产业高技术化;
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
     The sensitivity and specificity were high.
     灵敏度及特异性较高。
短句来源
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The author's previous work indicated that the activity of granular fused iron catalysts decreased seriously with time due to the gradual plugging up of the pore volume of catalysts by the high boiling point products. In this paper, the activity data were treated with Wheeler's internal diffusion law mathematically. And the results suggest that the rate is a chemical controlling one in the initial period of the synthesis, and the coefficient of the catalysts surface is of 0.98 (with space velocity 1000...

The author's previous work indicated that the activity of granular fused iron catalysts decreased seriously with time due to the gradual plugging up of the pore volume of catalysts by the high boiling point products. In this paper, the activity data were treated with Wheeler's internal diffusion law mathematically. And the results suggest that the rate is a chemical controlling one in the initial period of the synthesis, and the coefficient of the catalysts surface is of 0.98 (with space velocity 1000 hr~(-1), CO conversion 90% or so). When the catalysts pore volume are plugged up by the high boiling point products (whether the pore to be micro or macro), the rate becomes an internal diffusion controlling one, and the effectiveness of the catalytic surface changed into 0.082. The calculated coefficient of diffusion is of 2.4 10~(-5) cm~2/sec, which is in agreement with the magnitude of liquid-phase diffusion. Under the diffusional controlling conditions, the activity level of catalysts depends upon Deff, ks and Sg, by the rate law k∝2~(1/Deff·ks·Sg.) Where change of effective diffusivity. Deff, under the liquid phase conditions is not essential. But both the specific reaction rate, ks, and the effective surface, Sg are the major factors to the catalytic activity improvements. Therefore the precipited iron catalysts, owing to its high specific surface area and high specific activity, may be the promising one of the granular catalysts suitable for the high space velocity synthesis.

已往的工作指出,顆粒熔鉄催化剂在合成过程中活性有随时間下降的現象,认为主要是由于腊液堵塞孔隙的关系,应用成型方法构成大孔,能够有利于腊液的流出,延緩了活性下降的时間,但当腊液堵滿孔隙时,活性下降的水平仍与未成型的顆粒催化剂相近。本文根据活性方面的数据,进行了宏观动力学的分析,由动力学計算再次指明:当腊液未堵塞孔隙吋,合成反应是化学反应控制,此时表面有效利用系数达0.98(空速1000,CO轉化90%以上)。而当腊液堵塞孔隙后,轉为液相扩散控制,对362-1大顆粒催化剂言,此时表面有效利用系数为0.082,并求得气体通过液柱的扩散系数为2.4×10~(-5)厘米~2/秒。在扩散控制的情况下,由动力学分析指明,能影响活性水平的主要是Deff、Ks、Sg。有效扩散系数Deff在液相扩散情况下的改变是不大的,增大孔径并不能提高扩散控制时的活性水平。因此,孔径的增大在合成烃情况下仅起延緩腊液的积聚作用,而不能提高終活性的水平。由动力学分析指出,沉淀剂由于有大的表面积(較熔鉄剂大数倍以至数十倍),因此,可能适用于高速固定床操作而不須进行再生。实驗也驗証了这个看法。

The crystallite dimensions of a new solvay type catalyst for propylene polymerization were determined from the data of breadth of X-ray diffraction lines at half peak intensity. The crystallites have the size of about 100 A and they are smaller then those prepared by other methods. Their catalytic activity increases linearly with decreasing crystallite size.Surface area and pore structure of the catalyst were determined by elution chro-matographic method on model ST-03 analyzer. Our results showed...

The crystallite dimensions of a new solvay type catalyst for propylene polymerization were determined from the data of breadth of X-ray diffraction lines at half peak intensity. The crystallites have the size of about 100 A and they are smaller then those prepared by other methods. Their catalytic activity increases linearly with decreasing crystallite size.Surface area and pore structure of the catalyst were determined by elution chro-matographic method on model ST-03 analyzer. Our results showed that such catalyst possess high specific surface area and large pore volume and has both large and fine pores. Therefore, active centres can be fully available.

用X射线衍射法测定了索尔维型丙烯聚合新催化剂的微晶粒大小为100A左右,比其它方法所制得的同类型催化剂微晶粒要小;并发现催化剂活性与微晶粒大小几乎成线性关系,微晶粒越小催化活性越高。 用ST-03型比表面、孔径分布测定仪研究了催化剂的孔结构。结果表明本催化剂具有较大的比表面和孔体积及粗细孔均备的优良孔结构,保证钛活性中心的充分利用,因而催化剂表现出较高的催化活性。

A new type of polymeric adsorbent possessing both high specific surface area and certain polarity was made of chloromethylated cross-linked polystyrene and phenol by Friedel Crafts reaction. Dichloroethane and nitrobenzene were used as mixed solvents and aluminium chloride was used as catalyst. The reaction temperature was kept at 40℃to 125℃. Results showed that the capacities of the resins for adsorbing phenol from waste water were two times as high as that of Amberlite XAD-4 made by the Rohm and...

A new type of polymeric adsorbent possessing both high specific surface area and certain polarity was made of chloromethylated cross-linked polystyrene and phenol by Friedel Crafts reaction. Dichloroethane and nitrobenzene were used as mixed solvents and aluminium chloride was used as catalyst. The reaction temperature was kept at 40℃to 125℃. Results showed that the capacities of the resins for adsorbing phenol from waste water were two times as high as that of Amberlite XAD-4 made by the Rohm and Haas Co. in the U.S.A. Besides, its kinetic property and adsorptability were better than that of XAD-4. The adsorption capacities of the resins after 50 cycles remain unchanged.

用二氯乙烷和硝基苯作溶剂,三氯化铝等作催化剂,使氯甲基化交联聚苯乙烯和苯酚在40—125℃进行Fricdel-Crafts反应。制成一种具有较高比表面和一定极性的吸附树脂。它对废水中苯酚的吸附能力是Amberlite XAD-4树脂的两倍,其动力学性能、应用范围和抗干扰能力也较好,经50次循环使用,性能无明显变化。

 
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