Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/36133
Title: CARBONIZING COMPRESSED HYDROXYETHYL CELLULOSE UTILIZING STRESS RELAXATION – AN EFFECTIVE WAY TO TUNE PORE STRUCTURE OF ACTIVATED CARBON
Authors: CHEN FUXIANG
Keywords: Cold compression, activated carbon, hydroxyethy cellulose, stress relaxation
Issue Date: 15-Aug-2012
Source: CHEN FUXIANG (2012-08-15). CARBONIZING COMPRESSED HYDROXYETHYL CELLULOSE UTILIZING STRESS RELAXATION – AN EFFECTIVE WAY TO TUNE PORE STRUCTURE OF ACTIVATED CARBON. ScholarBank@NUS Repository.
Abstract: In this work, activated carbon (AC) is synthesized from a polymeric material, hydroxyethyl cellulose (HEC), with the incorporation of cold compression in the preparation process. The introduction of compressive stress by cold compression, coupled with the unique stress relaxation behavior of HEC during pyrolysis, results in the expansion of AC bodies. Surface analysis characterized by FESEM show that the expansion results in the formation of intricate surface features. N2 adsorption analysis suggests the formation of these features correspond to the improvement in the pore characteristics of the AC. Studies on the carbon backbones by 13C NMR and chemical functionalities by FTIR and XPS suggest variations of surface oxygen functionalities produced due to effects of the pre-treatment are postulated to have structural impacts on the carbon structure. Hydrogen sulfide adsorptions assessments further validates on surface-area expansion and basicity of the AC produced by this physical treatment approach.
URI: http://scholarbank.nus.edu.sg/handle/10635/36133
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
ChenFX - thesis.pdf1.72 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

178
checked on Dec 11, 2017

Download(s)

210
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.