Document Detail


High CO(2) storage capacity in alkali-promoted hydrotalcite-based material: in situ detection of reversible formation of magnesium carbonate.
MedLine Citation:
PMID:  20853277     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Alkali-promoted hydrotalcite-based materials showed very high CO(2) storage capacity, exceeding 15 mmol g(-1) when the carbonation reaction was carried out at relatively high temperature (300-500 °C) and high partial pressure of steam and CO(2). In situ XRD experiments have allowed correlation of high CO(2) capacity to the transformation of magnesium oxide centres into magnesium carbonate in alkali-promoted hydrotalcite-based material. Moreover, it has been clearly shown that crystalline magnesium carbonate may be reversibly formed at temperatures above 300 °C in the presence of sufficient partial pressure of steam in the gas phase, conditions that are prevalent in pre-combustion CO(2) capture. The role of steam appears to be of utmost importance for the formation of the bulk carbonate phase and for its reversibility. It is proposed that a high partial pressure of steam keeps the magnesium oxide periclase phase sufficiently hydroxylated to allow magnesium carbonate formation if a relatively high partial pressure CO(2) is present in the gas phase.
Authors:
Stéphane Walspurger; Paul D Cobden; Olga V Safonova; Yinghai Wu; Edward J Anthony
Related Documents :
15553637 - Comparison of pressure and heat resistance of clostridium botulinum and other endospore...
16457087 - Effect of 2.1 mpa and 4.1 mpa h2o2 exposure on auditory brain stem evoked potential in ...
6860037 - Temperature-induced alterations in rabbit testicular contractility in vitro.
11969537 - Dielectric and high-pressure investigations on a thermotropic cubic mesophase.
4017217 - Effect of heart rate on the canine end-systolic pressure-volume relationship.
19798037 - A randomized controlled trial on effects of the transcendental meditation program on bl...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chemistry (Weinheim an der Bergstrasse, Germany)     Volume:  16     ISSN:  1521-3765     ISO Abbreviation:  Chemistry     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-29     Completed Date:  2011-01-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9513783     Medline TA:  Chemistry     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  12694-700     Citation Subset:  -    
Affiliation:
Hydrogen and Clean Fossil Fuel Department, Energy research Centre of the Netherlands (ECN), Westerduinweg 3, 1755ZG, Petten, The Netherlands. walspurger@ecn.nl
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

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


Previous Document:  The effect of environmental conditions on nutritional quality of cherry tomato fruits: evaluation of...
Next Document:  Excited-state prototropic equilibrium dynamics of 6-hydroxyquinoline encapsulated in microporous cat...