Adsorption measurement method based on flow calibration and its error analysis

被引：0
|
作者：
Liu B. [1 ]
Cao H. [1 ]
机构：
[1] Department of Energy and Power Engineering, School of Mechanical Engineering, Tsinghua University, Beijing
来源：
Huagong Xuebao/CIESC Journal | 2022年 / 73卷 / 04期
关键词：
Adsorption; Equation of state; Error analysis; Mass flow controller; Measurement; Uncertainty;
D O I：
10.11949/0438-1157.20211630
中图分类号：
学科分类号：
摘要：
Porous adsorbents are widely used in separation and purification, gas storage, and industrial catalysis, and the determination of adsorption isotherms is of great significance for studying adsorption properties. Aiming at solving the difficulty that the traditional volumetric method is easily affected by the temperature distribution along the pipeline, the paper introduces an adsorption measurement method based on flow calibration. The error transfer of both methods is analyzed, and the influence of the structure parameters, physical parameters and instrument accuracy on the adsorption measurement is compared. The results show that increasing the calibration ball volume and sample chamber volume can improve the adsorption measurement accuracy of the traditional volumetric method, and increasing the sample volume, excess adsorption amount, skeleton density and instrument accuracy can improve the measurement accuracy of both methods. Compared to the traditional volumetric method, the method based on flow calibration has fewer error factors and can achieve lower measurement errors. The results can help improve the measurement accuracy of the volumetric method. © 2022, Editorial Board of CIESC Journal. All right reserved.
引用
收藏
页码：1597 / 1605
页数：8
相关论文
共 23 条
  • [1] Zhou D D, Chen P, Wang C., Et al., Intermediate-sized molecular sieving of styrene from larger and smaller analogues, Nature Materials, 18, pp. 994-998, (2019)
  • [2] Finsy V, Ma L, Alaerts L, Et al., Separation of CO<sub>2</sub>/CH<sub>4</sub> mixtures with the MIL-53(Al) metal-organic framework, Microporous Mesoporous Materials, 120, pp. 221-227, (2009)
  • [3] Li H, Li L B, Lin R B, Et al., Porous metal-organic frameworks for gas storage and separation: status and challenges, EnergyChem, 1, 1, (2019)
  • [4] Dinca M, Long J R, Hydrogen storage in microporous metal-organic frameworks with exposed metal sites, Angewandte Chemie International Edition, 47, pp. 6766-6779, (2008)
  • [5] Rowsell J L C, Millward A R, Park K S, Et al., Hydrogen sorption in functionalized metal-organic frameworks, Journal of the American Chemical Society, 126, pp. 5666-5667, (2004)
  • [6] Vo T S, Hossain M M, Jeong H M, Et al., Heavy metal removal applications using adsorptive membranes, Nano Convergence, 7, (2020)
  • [7] Marco Piumetti, A brief history of the science of catalysis (Ⅰ): From the early concepts to single-site heterogeneous catalysts, Chimica Oggi, 32, 6, pp. 22-27, (2014)
  • [8] Zhao Z G., Principle of Application of Adsorption, (2005)
  • [9] Tzabar N, Nitrogen Grossman G., methane, and ethane sorption on activated carbon, Cryogenics, 51, pp. 499-508, (2011)
  • [10] Tzabar N, ter Brake H J M., Adsorption isotherms and Sips models of nitrogen, methane, ethane, and propane on commercial activated carbons and polyvinylidene chloride, Adsorption, 22, pp. 901-914, (2016)
123