Premium
Nitrogen‐doping microporous adsorbents prepared from palm kernel with excellent CO 2 capture property
Author(s) -
Ma Rong,
Hao Jian,
Chang Guozhang,
Wang Yanxia,
Guo Qingjie
Publication year - 2020
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23581
Subject(s) - microporous material , thermogravimetry , palm kernel , adsorption , chemical engineering , materials science , carbon fibers , porosity , thermal stability , combustion , biochar , nitrogen , chemistry , pyrolysis , organic chemistry , palm oil , composite material , composite number , food science , engineering
In post‐combustion CO 2 capture, waste biomass is a favourable precursor to prepare porous carbons due to its low cost, renewability, and unique microstructures. This study presents a facile method for preparing N‐doping porous carbons. Palm kernel shell was selected as carbon precursor, and its inherent silica species acted as a natural template to form hierarchical pores. The obtained samples exhibit predominant characteristics with highly developed micropores and a high N content providing an important contribution to CO 2 adsorption capacity, which can reach up to 5.29 and 2.30 mmol/g under 100 kPa at 25 and 60 °C, respectively. Moreover, the resultant porous carbons also exhibit excellent cycling stability after 20 cycles. Furthermore, the activation mechanism was investigated by the quantitative thermogravimetry‐mass spectrometry (TG‐MS) method.