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- A Study of Pore Specific Surface Area and Its Correlation with the Strength of Silica Fume Cement Paste 硅粉水泥石中的孔比表面积及其与强度的相关性
- Keywords perlite admixture;cement;pore structure;porosity;median pore diameter;pore specific surface area;pore-size distribution; 珍珠岩掺合料;水泥;孔结构;孔隙率;中值孔径;孔比表面积;孔级配;
- pore specific surface area 孔比表面积
- The results show that BET specific surface area of AC is 1 654 m2/g, with reasonable pore size distribution (PSD). 结果表明:活性炭的BET比表面积达1 654 m2/g,具有合理的孔径分布,主要在2 nm附近。
- All of the effects could be accounted for by changes in the specific surface area,pore size distrib... 活性炭的比表面积、孔径分布和表面性质都会影响其吸附氢气的能力,其中,比表面积是最主要的影响因素。
- The pore size and specific surface area of ACFs were decreased after fluorination.The adsorption isotherm of nitrogen on ACFs were evidently reduced. 氟化后活性炭纤维的孔结构和比表面积变小,氮低温吸附等温曲线明显降低。
- BET specific surface area,pore diameter and pore volume of the synthesized molecular sieves were 197?m~2/g,about 4.80?nm and 0.23?cm~3/g,respectively. 合成的介孔氧化锆分子筛在450℃焙烧后;其BET比表面积达到197 m2/g;孔分布集中在4.;80 nm左右;孔体积为0
- Good relationship exists among total pore volume, specific surface area and aromatic microcrystallite size in coal char. 煤焦的总孔容、比表面积和芳核大小之间有很好的对应关系。
- The physical properties of catalysts such as specific surface area, pore volume, stacking density and crushing strength were tested. 测定了催化剂的比表面积、比孔体积、堆积密度和压碎强度等物理性质参数。
- Results that lignite char has abundant pore structure large specific surface area and many exchangeable positive ions which show catalytic influence on gasification reaction. 结果表明,褐煤焦具有丰富的分支孔系统和较大的比表面积,并含有较多对气化有催化作用的可交换阳离子。
- Specific surface area and pore size distribution of calcium-based sorbent prepared under different conditions are measured, and their macro-structural characteristics analyzed. 对不同条件下制备的钙基吸着剂,测定了它们的比表面积、孔径及其分布,并分析其宏观结构的特点。
- After the precursors of alumina were treated in different solvents, the changes of crystal type, specific surface area, pore volume, magnetic property of the alumina were studied. 实验中发现,溶剂热处理过程不仅有利于油中成型的无定形氢氧化铝微球向拟薄水铝石转化,而且可以增大载体的比表面积和孔体积。
- The BET specific surface area and the total cubage increase twice.The BJH specific surface is about 3 times that of the LAC.And the pore distribution became more even. 改性后活性炭BET比表面积和总孔容与原料炭相比均提高了1倍, BJH比表面积增至原料炭的3倍多, BJH孔容也提高到原料炭的2倍,孔径分布更趋均匀;
- The analysis results of specific surface area, pore size and pore volume showed that the microstructure of the regenerated molecular sieves was close to that of the fresh one. 通过比表面积、孔径、孔体积分布等微结构分析可知,经过再生之后的分子筛基本恢复了新鲜分子筛的结构特征。
- Sepiolite is a new catalytic material with a high specific surface area and a unique pore structure, which exists widely in the nature and whose cost is not high. 海泡石具有巨大比表面和独特的孔结构,且资源丰富,价格低廉,是一种新型的催化材料。
- The BET specific surface area reaches 477.7 m2? g-1 for NiO calcined at 523 K. 结果表明;在523K下焙烧得到的氧化镍BET比表面达到477.;7m~2·g~(-1)
- Carbon nanotube electrodes exhibit unique pore structure and high utilization efficiency of specific surface areas. 碳纳米管电极具有独特的孔隙结构和高比表面积利用率;
- At the same time,the specific surface area and the mesopore and m... 进一步延长超声时间,其比表面积和孔容反而下降。
- The oil absorbing capacity of modifying products is within 2.567~2.175 cm~(3)/g,the largest specific surface area and pore volume are 271.105 m~(2)/g and 0.53 cm~(3)/g respectively. 试验结果为:改性白炭黑产品的吸油值在2.;175~2
- The results of N_2 adsorption/desorption showed that the samples prepared by CAC-OTD method possessed relatively large specific surface area and uniform pore diameter distribution (3.4-4.4 nm). N_2吸附和脱附结果表明;采用模板剂法制得的样品具有较大的比表面积(高达103.;5m~2·g~(-1))和较均匀的孔径分布(3