Effect of rate of pyrolysis on the textural properties of naturally-templated porous carbons from alginic acid.
The effect of pyrolysis rate on the properties of alginic acid-derived carbonaceous materials, termed Starbon®, was investigated. Thermal Gravimetry-IR was used to prepare porous carbons up to 800 °C at several rates and highlighted increased CO2production at higher pyrolysis rates. N2porosimetry of the resultant carbons shows how pyrolysis rate affects both the mesopore structure and thus surface area and surface energy. Surface capacity of these carbons was analysed by methylene blue dye adsorption. In general, as the rate of pyrolysis increased, the mesopore content and adsorbent capacity decreased. It is considered here that the rapid production of volatiles at these higher rates causes structural collapse of the non-templated pore network. The work here demonstrates that pyrolysis rate is a key variable which needs to be controlled to maximise the textural properties of Starbon®required for adsorption applications.
Bristol-Myers Squibb, Reeds Lane, Moreton, CH46 1QW, UK.
Andrew S
AS
Marriott
Green Chemistry Centre of Excellence, Department of Chemistry, The University of York, Heslington, York, North Yorkshire, UK.
Andrew J
AJ
Hunt
Centre of Excellence in Mass Spectrometry and Department of Chemistry, The University of York, Heslington, York, North Yorkshire, UK.
Ed
E
Bergström
Centre of Excellence in Mass Spectrometry and Department of Chemistry, The University of York, Heslington, York, North Yorkshire, UK.
Jane
J
Thomas-Oates
Green Chemistry Centre of Excellence, Department of Chemistry, The University of York, Heslington, York, North Yorkshire, UK.
James H
JH
Clark
Biomass-derived porous carbons; Mesoporosity; N2 porosimetry; Pyrolysis rate; Thermal gravimetry
Angew Chem Int Ed Engl. 2006 Jun 2;45(23):3782-6
16671136