Water adsorption with hysteresis effect onto microporous activated carbon fabrics
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This paper depicted the physical, chemical character and the applied fields of ion microporous membrane. The technological procedure of making ion microporous membrane, applications in microporous counter-feinting trademark by heavy ion imaging and medical filtrator in our institute were stated.
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The microporous texture of pitch-based spherical activated carbon(PSAC)containing iron and without iron was studied in order to investigate the effect of iron on the formation of micropore.It was showed that iron had no obvious influence on the distribution of micropore,while it made the specific surface area and pore volume of micropore decrease slightly.
Carbon fibers
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The effect of pressure, temperature, microporous size of activated carbon on adsorption process of isopro-pyl alcohol on activated carbon was studied by Grand Canonical Monte Carlo Simulation. The result shows that the adsorption process can be described reliably by the activated carbon microporous model. When the pressure is 1kPa, the adsorption quantity of activated carbon with microporous size of 1. 7nm is higher. While activated carbon with microporous size of 2. 0nm has higher adsorption quantity when the pressure is 2-4kPa. At the pressure of 4 -10kPa, the adsorption quantity of activated carbon with microporous size of 2. 5nm is higher. The adsorption quantity of the system which jaws width of activity carbon is 2. 5nm is higher. The best recovery temperature of iso-propyl alcohol desorbed from activated carbon is 140℃.
Isopropyl alcohol
Carbon fibers
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This chapter contains sections titled: Introduction Silica-based Microporous Materials Germanium-based Microporous Materials Phosphate-based Microporous Materials Synthetic Clays Conclusion References
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Activated carbons are prepared from hemp stem with KOH as activating agent under different ratio of KOH to carbon conditions. The BET(Brunauer Emmett and Teller) specific surface area of the hemp stem-based activated carbons first increases and then decreases with the increasing ratio of KOH to carbon. The specific surface area, micropore surface area and volume of the activated carbons reach a maximum of 1589.27m 2 /g 1420.52m 2 /g, 89% of the total area, 0.751m 3 /g at the ratio of 4.5:1. The micropore size distribution shows the activated carbons contain a large number of ultramicropore and supermicropore.
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BET theory
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