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Title: Preparation and CO2 adsorption properties of soft-templated mesoporous carbons derived from chestnut tannin precursors

Journal Article · · Microporous and Mesoporous Materials
 [1];  [2];  [2];  [3];  [1];  [2];  [2];  [4];  [3]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Cornell College, Mount Vernon, IA (United States)
  4. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

This paper presents a soft templating approach for mesoporous carbon using the polyphenolic heterogeneous biomass, chestnut tannin, as the carbon precursor. By varying synthesis parameters such as tannin:surfactant ratio, cross-linker, reaction time and acid catalyst, the pore structure could be controllably modulated from lamellar to a more ordered hexagonal array. Carbonization at 600 °C under nitrogen produced a bimodal micro-mesoporous carbonaceous material exhibiting enhanced hydrogen bonding with the soft template, similar to that shown by soft-templating of phenolic-formaldehyde resins, allowing for a tailorable pore size. By utilizing the acidic nature of chestnut tannin (i.e. gallic and ellagic acid), hexagonal-type mesostructures were formed without the use of an acid catalyst. The porous carbon materials were activated with ammonia to increase the available surface area and incorporate nitrogen-containing functionality which led to a maximum CO2 adsorption capacity at 1 bar of 3.44 mmol/g and 2.27 mmol/g at 0 °C and 25 °C, respectively. The ammonia-activated carbon exhibited multiple peaks in the adsorption energy distribution which indicates heterogeneity of adsorption sites for CO2 capture.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Office of Workforce Development for Teachers & Scientists (WDTS)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1244196
Alternate ID(s):
OSTI ID: 1396330
Journal Information:
Microporous and Mesoporous Materials, Vol. 222; ISSN 1387-1811
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 67 works
Citation information provided by
Web of Science

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Tailoring graphitic nanostructures in hard carbons as anode materials achieving efficient and ultrafast sodium storage journal April 2018
CO2 Capture in the Sustainable Wheat-Derived Activated Microporous Carbon Compartments journal October 2016
Upgrading earth-abundant biomass into three-dimensional carbon materials for energy and environmental applications journal January 2019
Adsorption–desorption of CO 2 on zeolite-Y-templated carbon at various temperatures journal January 2018
Designing amino-based ionic liquids for improved carbon capture: One amine binds two CO 2 journal October 2018
Mechanochemical Synthesis of Ruthenium Cluster@Ordered Mesoporous Carbon Catalysts by Synergetic Dual Templates journal May 2019
Facile Control of the Porous Structure of Larch-Derived Mesoporous Carbons via Self-Assembly for Supercapacitors journal November 2017
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