Development of Ultramicropore-Mesopore Interconnected Pore Architectures for Boosting Carbon Dioxide Capture at Low Partial Pressure

25 Pages Posted: 24 Dec 2021

See all articles by Baogen Liu

Baogen Liu

Central South University

Xiancheng Ma

Central South University of Forestry and Technology

Da Wei

Hunan Normal University

Yang Yahui

Hunan Normal University

Zheng Zeng

Central South University

liqing li

Central South University

Abstract

The physical adsorption of carbon dioxide (CO2) using porous solid adsorbent is greatly hindered by high temperature and low pressure, resulting in a decrease in capture performance in terms of capacity, selectivity and kinetics. Here we report an effective synthesis of 3D hierarchical porous carbon with ultramicropore-mesopore interconnected pore architectures that are able to boost the CO2 adsorption at elevated temperature and low partial pressure. This unique pore structures is benefit from the uniform introduction of a combination of alkali metals (Li, Na, K) and other metals (Mg, Ca, Zn) in the resin precursor. Specifically, the employed dual metal in-situ activation method allows generation of extensive mesopores with pore size in the range of 3-5 and 7-9 nm without sacrificing distribution of ultramicropore. These properties result in an enhanced dynamic CO2 capacities from 1.36 to 1.54 mmol/g (40 °C and 0.15 bar), higher CO2/N2 selectivities from 73 to 85 as well as advanced mass transport kinetics. This work paves the way for the development of high performance CO2 adsorbent at low partial pressure and provides a strategy to prepare interconnected pore architectures for a variety of potential adsorption application.

Keywords: CO2 Capture, adsorption, pore structure, ultramicropore, mesopore

Suggested Citation

Liu, Baogen and Ma, Xiancheng and Wei, Da and Yahui, Yang and Zeng, Zheng and li, liqing, Development of Ultramicropore-Mesopore Interconnected Pore Architectures for Boosting Carbon Dioxide Capture at Low Partial Pressure. Available at SSRN: https://ssrn.com/abstract=3993171 or http://dx.doi.org/10.2139/ssrn.3993171

Baogen Liu

Central South University ( email )

Changsha, 410083
China

Xiancheng Ma

Central South University of Forestry and Technology ( email )

China

Da Wei

Hunan Normal University ( email )

No. 36, Lushan Road
Yuelu District
Changsha, 410001
China

Yang Yahui

Hunan Normal University ( email )

No. 36, Lushan Road
Yuelu District
Changsha, 410001
China

Zheng Zeng

Central South University ( email )

Changsha, 410083
China

Liqing Li (Contact Author)

Central South University ( email )

Changsha, 410083
China

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Downloads
20
Abstract Views
216
PlumX Metrics