当压力或温度超过临界值时,此状态的CO2就称为超临界CO2流体,那么超临界流体随温度的变化CO2流体的密度是怎样变化的
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当压力或温度超过临界值时,此状态的CO2就称为超临界CO2流体,那么超临界流体随温度的变化CO2流体的密度是怎样变化的
图1-1.超临界流体的压力–温度相图
Fig.1-1.Schematic pressure-temperature phase diagram for a pure component showing the supercritical fluid (SCF) region.The triple point (T) and critical point (C) are marked.The blue circles represent the variation in density of the substance in the different regions of the phase diagram.Note that the density varies continuously between the liquid state and the gas state,providing that the liquid-gas equilibrium line (T-C) is not crossed.[15]
图1-2.超临界二氧化碳物理(密度和传输)性质的可调节性
Fig.1-2.Pressure-tunability of density and transport properties of supercritical fluids in the near-critical region.[16]
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[15] Cooper A.I.Polymer synthesis and processing using supercritical carbon dioxide [J].J.Mater.Chem.,2000,10:207-234.[16] Subramaniam B.Enhancing the stability of porous catalysts with supercritical reaction media [J].Applied Catalysis A:General,2001,212:199-213.
Fig.1-1.Schematic pressure-temperature phase diagram for a pure component showing the supercritical fluid (SCF) region.The triple point (T) and critical point (C) are marked.The blue circles represent the variation in density of the substance in the different regions of the phase diagram.Note that the density varies continuously between the liquid state and the gas state,providing that the liquid-gas equilibrium line (T-C) is not crossed.[15]
图1-2.超临界二氧化碳物理(密度和传输)性质的可调节性
Fig.1-2.Pressure-tunability of density and transport properties of supercritical fluids in the near-critical region.[16]
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[15] Cooper A.I.Polymer synthesis and processing using supercritical carbon dioxide [J].J.Mater.Chem.,2000,10:207-234.[16] Subramaniam B.Enhancing the stability of porous catalysts with supercritical reaction media [J].Applied Catalysis A:General,2001,212:199-213.
当压力或温度超过临界值时,此状态的CO2就称为超临界CO2流体,那么超临界流体随温度的变化CO2流体的密度是怎样变化的
超临界流体的定义?
超临界CO2流体萃取技术(SC-CO2)为什么有较好的物质萃取能力?
什么是超临界流体?超临界CO2萃取的原理是什么?举例说明影响其萃取的因数有哪些?
超临界CO2流体是一种和水相似,能阻燃、溶解能力强的绿色环保溶剂.下列有关超临界CO2流体的说法错误的是( )
二氧化碳超临界流体的特性?
什么是超临界二氧化碳流体的作用?
CO2的超临界区域在哪里?
为什么超临界流体的密度和溶解能力成正比关系?
超临界流体是一种介于液气两态之间的物质,有着超强的溶解能力
超临界流体有哪些?
超临界CO2流体是一种与水相似、能阻燃、溶解能力强的溶剂,被誉为“绿色环保溶剂”.下列有关它的说法错误的是( )