Experimental and Theoretical Studies of CO2 Absorption Enhancement by Nano-Al2O3 and Carbon Nanotube Particles

卢素敏; 邢敏; 孙燕; 董相均

doi:10.1016/S1004-9541(13)60550-9

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Experimental and Theoretical Studies of CO₂ Absorption Enhancement by Nano-Al₂O₃ and Carbon Nanotube Particles

分离科学与工程 | Updated：2026-01-06

- Experimental and Theoretical Studies of CO₂ Absorption Enhancement by Nano-Al₂O₃ and Carbon Nanotube Particles
- Chinese Journal of Chemical Engineering Vol. 21, Issue 9, Pages: 983-9901004-954160550-9(2013)
- Affiliations：
  
  Department of Environmental and Chemical Engineering, Tianjin Polytechnic University,Tianjin,China,300387
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(13)60550-9
  CLC：
- Published：2013
- Accepted：
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Absorption Enhancement by Nano-Al
DOI：

Absorption Enhancement by Nano-Al DOI： 10.1016/S1004-9541(13)60550-9.

摘要

Abstract

The influence of nano-particles on CO

absorption was studied experimentally in a stirred thermostatic reactor. Nano-Al

and carbon nanotube (CNT) particles which showed different hydrophobic properties were chosen for the investigation. The experimental results were compared with that of micron-size activated carbon (AC) and Al

particles. From the results

no enhancement by micron-size Al

was found

and with the increase of Al

concentration

the enhancement factor decreased. However

nano-Al

showed a weak enhancement for the CO

absorption. AC and CNT particles all intensified the gas-liquid mass transfer effectively

yet the trend of the enhancement factor with stirring speed for the two particles was different. With increasing stirring speed

the enhancement factor of AC particles was decreased

whereas in CNT suspensions it was increased. The experimental phenomena demonstrated a difference in enhancement mechanism for different size particles. For nano-particles

besides the influence of adsorbability and hydrophobicity

the micro-convection caused by

Brownian motion should be also taken into account. Considering the micro-convection effect

a theoretical model was developed to shed light on the absorption enhancement by nano-particles.

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