Document Detail

Critical role of small micropores in high CO(2) uptake.
MedLine Citation:
PMID:  23321627     Owner:  NLM     Status:  Publisher    
Microporous carbon materials with extremely small pore size are prepared by employing polyaniline as a carbon precursor and KOH as an activating agent. CO(2) sorption performance of the materials is systematically investigated at the temperatures of 0, 25 and 75 °C. The prepared carbons show very high CO(2) uptake of up to 1.86 and 1.39 mmol g(-1) under 1 bar, 75 °C and 0.15 bar, 25 °C, respectively. These values are amongst the highest CO(2) capture amounts of the known carbon materials. The relation between CO(2) uptake and pore size at different temperatures is studied. An interesting and innovative point that the micropores with pore size smaller than a critical value play a crucial role in CO(2) adsorption at different temperatures is demonstrated. It is found that the higher the sorption temperature is, the smaller this critical value of pore size is. Pores smaller than 0.54 nm are manifested to determine CO(2) capture capacity at high sorption temperature, e.g. 75 °C. This research proposes a basic principle for designing highly efficient CO(2) carbon adsorbents; that is, the adsorbents should be primarily rich in extremely small micropores.
Zhongshen Zhang; Jin Zhou; Wei Xing; Qingzhong Xue; Zifeng Yan; Shuping Zhuo; Shi Zhang Qiao
Related Documents :
11538537 - Structure of avian tectorial, otolithic, and cupular membranes.
24195747 - Microscopically based calculations of the free energy barrier and dynamic length scale ...
24302547 - High-temperature elastic moduli of flux-grown α-geo2 single crystal.
23667777 - Temperature affects thrombolytic efficacy using rt-pa and eptifibatide, an in vitro study.
20730817 - Electrical transport and high-performance photoconductivity in individual zrs(2) nanobe...
16504237 - The electrocatalytic reduction of nitrate in water on pd/sn-modified activated carbon f...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-15
Journal Detail:
Title:  Physical chemistry chemical physics : PCCP     Volume:  -     ISSN:  1463-9084     ISO Abbreviation:  Phys Chem Chem Phys     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888160     Medline TA:  Phys Chem Chem Phys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
School of Chemical Engineering, Shandong University of Technology, Zibo 255049, P. R. China.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Pre-culturing islets with mesenchymal stromal cells using a direct contact configuration is benefici...
Next Document:  Resection of an intramedullary high cervical metastasis from a malignant mixed Muellerian tumour.