Screening of metal oxides to promote CO2 adsorption performance over polyethyleneimine incorporated solid adsorbents

Yang MENG, Wu Xinyun, Yan Yuxin, Liu Shuai, Wu Tao, Pang Cheng Heng

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

Amine-modified solid sorbents have attracted extensive interests in post-combustion carbon capture for power plants. Among various amines, polyethyleneiemine (PEI) is likely to be the most effective and promising candidate. However, previous studies have mainly focused on examining various supports to increase PEI loading and then enhance CO2 adsorption capacity. In this study, one rare earth element (Ce) and 6 first-row transition metals (from V to Cu) in the oxidation states impregnated on PEI incorporated γ-Al2O3 were prepared and investigated as potential catalyst/promotor for base-catalyzed reaction. Thermodynamic analysis, including isothermal and quasi-static CO2 adsorption tests, were implemented to evaluate the performances amongst the 7 metal oxides. The results showed that MnO2, CeO2 and Fe2O3 showed a better performance in isothermal CO2 adsorption at 75oC. Upon quasi-static tests, the results also indicates that the peak adsorption temperatures (Tpeak, a) of V2O5 and Cr2O3 shifted to high temperature region, whilst opposite behavior of MnO2 was observed. In preliminary study, density functional theory (DFT) was also adopted to assist the screening of metal oxide in terms of bond length and adsorption energies.

Original languageEnglish
Title of host publicationMaterials Science and Engineering
Subtitle of host publicationTechnological Advances and Research Results
EditorsNancy Liu
PublisherTrans Tech Publications Ltd
Pages93-100
Number of pages8
ISBN (Print)9783035716412
DOIs
Publication statusPublished - 2020
EventInternational Conference on Materials Science and Engineering, ICMSE 2019 - Kyoto, Japan
Duration: 26 Dec 201928 Dec 2019

Publication series

NameMaterials Science Forum
Volume1005 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceInternational Conference on Materials Science and Engineering, ICMSE 2019
Country/TerritoryJapan
CityKyoto
Period26/12/1928/12/19

Keywords

  • Carbon capture
  • Metal oxides
  • Polyethyleneimine
  • Thermodynamic analysis

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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