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Isosteric Heats of Adsorption of Gases and Vapors on a Microporous Carbonaceous Material
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-07-11 , DOI: 10.1021/acs.jced.8b00363 S. Hadi Madani 1, 2 , Francisco Rodríguez-Reinoso 3 , Mark J. Biggs 2 , Phillip Pendleton 2
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-07-11 , DOI: 10.1021/acs.jced.8b00363 S. Hadi Madani 1, 2 , Francisco Rodríguez-Reinoso 3 , Mark J. Biggs 2 , Phillip Pendleton 2
Affiliation
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High-resolution, multiple temperature adsorption isotherms of ten adsorptives classified into highly polar (1.7 ± 0.1 D) and nonpolar (0 D) probes with increasing kinetic diameters were measured on a well-characterized poly(furfuryl alcohol)-based microporous carbon. The Clausius–Clapeyron equation was applied to each, resulting in isosteric heats of adsorption. Fluid–fluid interactions, nonspecific fluid–solid interactions, and specific fluid–high energy site interactions were identified and discussed as variables contributing to the total isosteric heat of adsorption. Each isosteric heat was compared against its position relative to adsorption heat by a flat surface, twice this heat, and adsorptive latent heat of condensation. The shape of each curve was analyzed via the contribution of each interaction to the total across the fractional filing range, leading to identification of fillings as Zero Coverage, Low Coverage, and High Coverage. This systematic investigation provided a detailed analysis of the influences of adsorptive size, its conformation, and polarity effects on micropore filling, and tabulation of the analyses gave a clear and comprehensive insight into the adsorption mechanisms.
中文翻译：
气体和蒸气在微孔碳质材料上的吸附等规热
在表征良好的基于聚糠醇的微孔碳上测量了十种吸附剂的高分辨率，多温度吸附等温线，这些吸附剂分为具有高动力学直径的高极性（1.7±0.1 D）和非极性（0 D）探针。将Clausius-Clapeyron方程应用于每个方程，从而产生等距的吸附热。流体-流体相互作用，非特异性流体-固体相互作用和特定流体-高能位点相互作用被确定并讨论为有助于总等规吸附热的变量。通过平面比较每种等规质热与它相对于吸附热的位置，该热的两倍以及冷凝的吸附性潜热。通过在分数归档范围内每种相互作用对总量的贡献来分析每条曲线的形状，从而将填充物标识为零覆盖率，低覆盖率和高覆盖率。这项系统的研究提供了对吸附尺寸，其构象和极性影响对微孔填充的影响的详细分析，并通过表格将分析清楚，全面地了解了吸附机理。
更新日期：2018-07-12
中文翻译：
气体和蒸气在微孔碳质材料上的吸附等规热
在表征良好的基于聚糠醇的微孔碳上测量了十种吸附剂的高分辨率，多温度吸附等温线，这些吸附剂分为具有高动力学直径的高极性（1.7±0.1 D）和非极性（0 D）探针。将Clausius-Clapeyron方程应用于每个方程，从而产生等距的吸附热。流体-流体相互作用，非特异性流体-固体相互作用和特定流体-高能位点相互作用被确定并讨论为有助于总等规吸附热的变量。通过平面比较每种等规质热与它相对于吸附热的位置，该热的两倍以及冷凝的吸附性潜热。通过在分数归档范围内每种相互作用对总量的贡献来分析每条曲线的形状，从而将填充物标识为零覆盖率，低覆盖率和高覆盖率。这项系统的研究提供了对吸附尺寸，其构象和极性影响对微孔填充的影响的详细分析，并通过表格将分析清楚，全面地了解了吸附机理。
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