Adsorption and diffusion of carbon dioxide on the metal-organic framework CuBTB

Mitchell R. Armstrong, Bohan Shan, Zhenfei Cheng, Dingke Wang, Jichang Liu, Bin Mu

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The metal-organic framework (MOF) CuBTB was synthesized and used to study adsorption and diffusion of carbon dioxide (CO2) in the crystal. Experimentally measured CO2 adsorption isotherms can be successfully fitted using the Toth adsorption model. The maximum adsorption capacity at 300 K and 350 K is 2.08 and 1.08 mmol/g, respectively. The isosteric heat of adsorption of CO2 on CuBTB is about 26.4 kJ/mol. The intracrystalline diffusivity of CO2 on CuBTB, obtained with a one-dimensional micropore diffusion model, is in the range of 1.57–9.85 × 10−12 m2/s from 280 K to 350 K, while the diffusion time constant (De/r2) is in the range of 24.6–3.93 × 10−3 s−1, which is higher than some zeolites. A dual linear-driving force (LDF) model used to estimate the kinetic constants provides an overall better fit to the experimental data than the one-dimensional micropore diffusion model.

Original languageEnglish (US)
Pages (from-to)10-17
Number of pages8
JournalChemical Engineering Science
Volume167
DOIs
StatePublished - Aug 10 2017

Fingerprint

Carbon Dioxide
Adsorption
Carbon dioxide
Metals
Diffusion Model
One-dimensional Model
Zeolites
Diffusivity
Driving Force
Time Constant
Adsorption isotherms
Range of data
Crystal
Heat
Kinetics
Framework
Experimental Data
Crystals
Model
Estimate

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering
  • Applied Mathematics

Cite this

Adsorption and diffusion of carbon dioxide on the metal-organic framework CuBTB. / Armstrong, Mitchell R.; Shan, Bohan; Cheng, Zhenfei; Wang, Dingke; Liu, Jichang; Mu, Bin.

In: Chemical Engineering Science, Vol. 167, 10.08.2017, p. 10-17.

Research output: Contribution to journalArticle

Armstrong, Mitchell R. ; Shan, Bohan ; Cheng, Zhenfei ; Wang, Dingke ; Liu, Jichang ; Mu, Bin. / Adsorption and diffusion of carbon dioxide on the metal-organic framework CuBTB. In: Chemical Engineering Science. 2017 ; Vol. 167. pp. 10-17.
@article{d80aa0f7e6dc453f95c8d20336e0352e,
title = "Adsorption and diffusion of carbon dioxide on the metal-organic framework CuBTB",
abstract = "The metal-organic framework (MOF) CuBTB was synthesized and used to study adsorption and diffusion of carbon dioxide (CO2) in the crystal. Experimentally measured CO2 adsorption isotherms can be successfully fitted using the Toth adsorption model. The maximum adsorption capacity at 300 K and 350 K is 2.08 and 1.08 mmol/g, respectively. The isosteric heat of adsorption of CO2 on CuBTB is about 26.4 kJ/mol. The intracrystalline diffusivity of CO2 on CuBTB, obtained with a one-dimensional micropore diffusion model, is in the range of 1.57–9.85 × 10−12 m2/s from 280 K to 350 K, while the diffusion time constant (De/r2) is in the range of 24.6–3.93 × 10−3 s−1, which is higher than some zeolites. A dual linear-driving force (LDF) model used to estimate the kinetic constants provides an overall better fit to the experimental data than the one-dimensional micropore diffusion model.",
author = "Armstrong, {Mitchell R.} and Bohan Shan and Zhenfei Cheng and Dingke Wang and Jichang Liu and Bin Mu",
year = "2017",
month = "8",
day = "10",
doi = "10.1016/j.ces.2017.03.049",
language = "English (US)",
volume = "167",
pages = "10--17",
journal = "Chemical Engineering Science",
issn = "0009-2509",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Adsorption and diffusion of carbon dioxide on the metal-organic framework CuBTB

AU - Armstrong, Mitchell R.

AU - Shan, Bohan

AU - Cheng, Zhenfei

AU - Wang, Dingke

AU - Liu, Jichang

AU - Mu, Bin

PY - 2017/8/10

Y1 - 2017/8/10

N2 - The metal-organic framework (MOF) CuBTB was synthesized and used to study adsorption and diffusion of carbon dioxide (CO2) in the crystal. Experimentally measured CO2 adsorption isotherms can be successfully fitted using the Toth adsorption model. The maximum adsorption capacity at 300 K and 350 K is 2.08 and 1.08 mmol/g, respectively. The isosteric heat of adsorption of CO2 on CuBTB is about 26.4 kJ/mol. The intracrystalline diffusivity of CO2 on CuBTB, obtained with a one-dimensional micropore diffusion model, is in the range of 1.57–9.85 × 10−12 m2/s from 280 K to 350 K, while the diffusion time constant (De/r2) is in the range of 24.6–3.93 × 10−3 s−1, which is higher than some zeolites. A dual linear-driving force (LDF) model used to estimate the kinetic constants provides an overall better fit to the experimental data than the one-dimensional micropore diffusion model.

AB - The metal-organic framework (MOF) CuBTB was synthesized and used to study adsorption and diffusion of carbon dioxide (CO2) in the crystal. Experimentally measured CO2 adsorption isotherms can be successfully fitted using the Toth adsorption model. The maximum adsorption capacity at 300 K and 350 K is 2.08 and 1.08 mmol/g, respectively. The isosteric heat of adsorption of CO2 on CuBTB is about 26.4 kJ/mol. The intracrystalline diffusivity of CO2 on CuBTB, obtained with a one-dimensional micropore diffusion model, is in the range of 1.57–9.85 × 10−12 m2/s from 280 K to 350 K, while the diffusion time constant (De/r2) is in the range of 24.6–3.93 × 10−3 s−1, which is higher than some zeolites. A dual linear-driving force (LDF) model used to estimate the kinetic constants provides an overall better fit to the experimental data than the one-dimensional micropore diffusion model.

UR - http://www.scopus.com/inward/record.url?scp=85016521043&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85016521043&partnerID=8YFLogxK

U2 - 10.1016/j.ces.2017.03.049

DO - 10.1016/j.ces.2017.03.049

M3 - Article

VL - 167

SP - 10

EP - 17

JO - Chemical Engineering Science

JF - Chemical Engineering Science

SN - 0009-2509

ER -