UC知道求翻译高手对化学专业论文部分进行翻译
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Carbon nanotubes as sorbents for the gas phase preconcentration of semivolatile organics in a microtrap
In this paper we present the application of carbon nanotubes as unique sorbents for the fabrication of microtraps for the nanoscale adsorption/desorption of relatively large semivolatile organic molecules. The microtrap application requires high adsorption capacity as well as easy desorbability; the latter being critical for semivolatile compounds. The sorbent characteristics of single and multiwalled carbon nanotubes for gas phase adsorption/desorption of several compounds has been studied. The nonporous nature of carbon nanotubes (CNTs) eliminates the mass transfer resistance related to diffusion into pore structures, thus allowing easy desorbability. At the same time, their high aspects ratios lead to large breakthrough volumes. As compared to a commercial sorbent Carbopack , the breakthrough volume was as much as an order of magnitude higher in the CNTs, while the rate of de
In this paper we present the application of carbon nanotubes as unique sorbents for the fabrication of microtraps for the nanoscale adsorption/desorption of relatively large semivolatile organic molecules. The microtrap application requires high adsorption capacity as well as easy desorbability; the latter being critical for semivolatile compounds. The sorbent characteristics of single and multiwalled carbon nanotubes for gas phase adsorption/desorption of several compounds has been studied. The nonporous nature of carbon nanotubes (CNTs) eliminates the mass transfer resistance related to diffusion into pore structures, thus allowing easy desorbability. At the same time, their high aspects ratios lead to large breakthrough volumes. As compared to a commercial sorbent Carbopack , the breakthrough volume was as much as an order of magnitude higher in the CNTs, while the rate of de
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碳纳米管作为吸附剂为气相富集semivolatile有机物在一个microtrap
在本文中，我们目前的应用碳纳米管作为独特的吸附剂为制作microtraps为纳米吸附/解吸比较大的semivolatile有机分子。该microtrap的应用要求高的吸附能力，以及容易desorbability ;后者的关键semivolatile化合物。该脱硫剂的特点，单和多壁碳纳米管气相吸附/解吸的几个化合物进行了研究。该无毛细孔的性质，碳纳米管（ CNTs ） ，消除了传质阻力与扩散到孔隙结构，从而使容易desorbability 。在同一时间内，他们的高比率方面，导致大的突破册。相比商业吸附剂carbopack ，突破货量则高达一个量级较高，在碳纳米管，而解吸率作为衡量的高峰宽度的一半的高度，解吸带的8倍为低。诱捕和解吸的特点，单和多壁碳纳米管被认为具有可比性。我们还发现，存在无序碳杂质，便可消除控制氧化退火可以大大降低的表现，碳纳米管。