孔容
- 网络pore volume;pore capacity
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BET表征结果显示,粘结剂提高了催化剂比表面积和孔容。
The BET characterization results showed the binder increased the catalytic specific surface area and pore volume . 4 .
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催化剂反应三次后其比表面积,孔容都下降,载体表面发生坍塌堵塞覆盖Rh。
After three times reaction , the specific surface area , pore volume were decreased , the surface of carrier collapsed , or covering the precious metal .
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当活性炭具有较低的灰分、适中的pH值以及较大的比表面积和比孔容及适当孔结构分布时,以其为载体的钌催化剂具有较高的活性。
When the AC has low ash content , proper pH value and pore distribution , high surface area and total pore volume , the catalyst supported on this AC has high activity .
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测定了活性炭的比表面积、微孔孔容、碘吸附值、四氯化碳吸附值、CO2吸附量、堆积密度等指标。
The iodine number , hardness , apparent density , carbon tetrachloride adsorption , specific surface area , pore size distribution , and CO2 adsorption of the activated carbons were determined .
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结果表明,H2O/TiCl4摩尔比为3时体系的成胶过程较为缓慢,制备的纳米晶TiO2气凝胶样品具有最小的晶粒尺寸及最大的比表面积和孔容,并且具有最佳的光催化活性。
When H_2O / TiCl_4 molar ratio is 3 , the prepared TiO_2 aerogel has the smallest crystallite size and the biggest surface area , and the catalyst shows the highest activity for phenol degradation .
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结果表明:该活性炭为微孔型,BET比表面积为1214m2/g,总孔容为0.7387mL/g,微孔占总孔容74.03%,中孔占24.54%,大孔占1.43%。
It was shown that the activated carbon was microporous with 0.7387 mL / g total pore volume , of which 74.03 % was micropore volume , 24.54 % was mesopore volume and 1.43 % was macropore volume .
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根据BET法和BJH法测定了膨胀珍珠岩的比表面积、孔径分布和孔容等微观结构参数。
In this paper , microcosmic parameters including specific surface area , pore size distribution and pore volume of expanded perlite used in water-bearing explosive has been measured by BET and BJH methods .
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随着PEG含量的增大,孔径不断减小,而比表面积、总孔容和比电容呈先增大后减小的变化趋势,并在PF/PEG质量比为1时达到最大值。
As PEG content increases , pore sizes of obtained carbons decrease , while specific surface area , total pore volume and specific capacitance increase firstly and then decrease , and the maximum values result at PF / PEG mass ratio of 1 .
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实验发现半焦的孔比表面积和孔容积分布曲线存在2个明显的峰值,第1个尖峰对应的孔径稍小于2nm,说明微孔的比表面积大大增加;
Two peaks are found in distribution curves of the coal char pore specific surface area and pore volume ;
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等温氮气吸附实验显示:500℃热处理后非担载膜的比表面积为548.84m2·g-1,孔容为0.57mL·g-1。
Nitrogen adsorption isotherm measurement indicate that pore volume and specific surface area of an unsupported membrane after calcination at 500 ℃ is 0.57 mL · g-1 and 548.84 m2 · g-1 , respectively .
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N2吸附-脱附测试表明:所制备的样品具有高的比表面积、大的介孔孔径和孔容,说明欧泊模板的存在有效的限制了介孔孔道在碳化过程中的收缩。
The nitrogen adsorption-desorption measurements showed that the samples had high BET surface areas , large pore sizes and pore volumes . This indicated that the opal templates confined the shrinkage of the mesoporous pores effectively in the process of the carbonization .
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结果表明,炭化温度是影响分子筛型活性炭性能的关键因素,制备的活性炭具有均匀的孔径分布,<09nm(9A)的孔占活性炭总孔容的80%以上。
The results show that the carbonization temperature is a more important factor for preparing molecular-sieve type activated carbon . The activated carbon has a narrow pore size distribution .
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使用适量的模板剂可以获得高度有序结构的介孔碳LC(0.25),其孔径分布在20-25nm,比表面积和孔容分别可达553m2/g、0.74cm3/g。
Mesoporous carbon LC ( 0.25 ) with highly ordered structure can be obtained with appropriate templating agent , wherein , the pore size centered at 20-25 nm , the specific surface area and pore volume reached 553 m2 / g and 0.74 cm3 / g , respectively .
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结果表明,通过DGC法得到的多级孔道沸石分子筛比直接水热晶化所得纳米沸石团聚体有更大的介孔孔容,在烷基化反应中有较高稳定性。
The results indicated that the zeolite with much more mesoporous volume than the nano-zeolite aggregation crystallized by hydrothermal method can be obtained by DGC method , which presented more stable activity .
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后交联得到的树脂的比表面积和孔容分别可达到484m~2/g和0.42ml/g。
The surface area and pore volume of one of the resins post-cross-linked are as high as 484m2 / g and 0.42ml/g respectively .
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结果表明,只有在vSi/vTi>30时,分子筛产物才具有较高的比表面积和结构有序度。模板剂分子的碳链越长,则得到的TiHMS分子筛的孔容及孔径越大。
The experimental results showed that Ti-HMS with high BET surface area and high ordered structure could be obtained when v_ ( Si ) / v_ ( Ti ) > 30 . The pore volume and the pore size increase with the increase of the chain length in template molecule .
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结果表明,钠离子的存在,加剧了USY分子筛的钒中毒深度,导致分子筛晶体结构的进一步破坏,使分子筛的比表面积、孔容、表面酸量及裂解活性等性能明显降低。
Results indicated that sodium accumulation on USY sample could accelerate the vanadium poisoning of USY zeolite and the destruction of crystalline structure and the decrease of the surface area , bore volume , surface acid sites , and cracking activity of the zeolite .
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K-MCM-41、Na-MCM-41比表面积、孔容和孔径均有所下降,Na-MCM-41下降尤其显著,但两者仍保持了良好的中孔结构特性;
Surface area , pore volum and pore radius of K-MCM-41 and Na-MCM-41 , especially Na-MCM-41 were reduced , but their the structural properties were retained as well as the mesoporous zeolite 's.
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结果表明,突出区煤的孔隙率、孔容、比表面积等均随其碳原子摩尔分数Xc的增大而增大,且上述参数均与煤样点的位置有关;
It was shown by the results that porosity , pore volume , specific surface area of coal in outburst zone increased with the increase of its carbon atom mole fraction , and the above mentioned parameters were related to the position of coal sampled .
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本文考察了水合13X沸石与碱金属盐类间的固相离子交换反应,并对交换样品的比表面、孔容和异丙醇分解反应活性进行了测定。
The solid - state ion exchange between hydrated 13X and alkaline metal salt was studied . The surface area , the pore volume and the catalytic performance of the as - exchanged samples were measured and compared with those of the samples obtained by conventional exchange .
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结果表明,与新鲜催化剂相比,再生后FC-18催化剂的孔容和平均孔径有所增大,比表面积及酸度均有所降低;
The results show that the regenerated catalysts have a little increase in the pore volume and average pore size and a slight decrease in the surface area and acidity compared with the fresh FC-18 catalysts .
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用氨气作为循环介质,采用缓冲溶液沉淀法,制得的粉末状拟薄水铝石的比表面积达到300m~2/g以上,孔容达到0.7ml/g左右;
The pseudo-boehmite was obtained by depositing from buffer solution with ammonia gas circulated medium . The specific surface area of product reached up to 300m2 / g and pore volume reached about 0.7ml/g .
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以通用级沥青氧化纤维为原料经水蒸气活化制得沥青基活性炭纤维(PACF),讨论了工艺参数对PACF的比表面积、孔结构(孔容、孔径大小及分布)的影响。
Pitch based activated carbon fiber was produced by different activation parameters from oxidized fiber of isotropic pitch , and the effect of parameters on the specific surface area and pore structure ( volume , pore size and its distribution ) was discussed .
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制备了一系列氧化硅沉积量不同的SiNaY沸石,红外光谱、比表面和孔体积测量结果表明随着沉积量增加沸石孔径逐渐缩小,但沸石骨架结构、孔容和内表面性质基本不变。
A series of NaY zeolite samples with different amount of silica deposition ( SiNaY ) were prepared and characterized by IR spectroscopy and adsorption measurements . It was found that after deposition and calcination the zeolite framework structure , pore volume and internal surface properties were essentially unaltered .
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离子交换树脂比表面与孔容的测定
Measurement of Specific Surface Area and Pore Volume of Ion-exchange Resin
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随着孔容的增加,聚合物的二氧化碳吸附量也随着增加。
The CO2 adsorption mounts of polymer increase with the pore volume .
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高表面积和大微孔孔容的活性炭具有更优异的吸附性能,但较多的微孔容易造成垫气量的增加。
Higher surface area and larger micropore volume were better to adsorption .
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随着比表面积和孔容的增大,催化剂的活性提高。
Activity of the catalysts increases with surface area and pore volume .
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同时样品的比表面积和孔容随焙烧温度的升高也不断减小。
The surface area and pore size decreased with the temperature rising .
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羟基铝镍多孔粘土材料的表面酸性及其孔容
The Surface Acidity and Porosity Volume of Hydroxy Al Ni Porous Clay Materials