Picture of UK Houses of Parliament

Leading national thinking on politics, government & public policy through Open Access research

Strathprints makes available scholarly Open Access content by researchers in the School of Government & Public Policy, based within the Faculty of Humanities & Social Sciences.

Research here is 1st in Scotland for research intensity and spans a wide range of domains. The Department of Politics demonstrates expertise in understanding parties, elections and public opinion, with additional emphases on political economy, institutions and international relations. This international angle is reflected in the European Policies Research Centre (EPRC) which conducts comparative research on public policy. Meanwhile, the Centre for Energy Policy provides independent expertise on energy, working across multidisciplinary groups to shape policy for a low carbon economy.

Explore the Open Access research of the School of Government & Public Policy. Or explore all of Strathclyde's Open Access research...

Decoupling microporosity and nitrogen content to optimise CO2 adsorption in modified xerogels

Principe, Ivan A. and Murdoch, Billy and Flannigan, James M. and Fletcher, Ashleigh J. (2018) Decoupling microporosity and nitrogen content to optimise CO2 adsorption in modified xerogels. Materials Today Chemistry. pp. 195-205. ISSN 2468-5194

[img] Text (Principe-etal-MTC-2018-Decoupling-microporosity-and-nitrogen-content-to-optimise-CO2-adsorption)
Accepted Author Manuscript
Restricted to Repository staff only until 26 September 2019.

Download (1MB) | Request a copy from the Strathclyde author


    Selected melamine-resorcinol-formaldehyde (MRF) xerogels have been synthesised and analysed to determine the influence of nitrogen (N) incorporated into the gel structure, as well as, resorcinol to catalyst (sodium carbonate) and resorcinol to formaldehyde molar ratios. The aforementioned factors were varied, and their effect on gel properties characterised, allowing a better understanding of how gel characteristics can be tailored, and their impact on gel performance. MRF gels, produced in this study, were characterised using volumetric and gravimetric analyses to determine porous structure and quantify CO2 capture capacities and kinetics, as well as allowing determination of heats of adsorption and activation energies for CO2. MRF10_200_0.25 has exhibited the largest CO2 capacity (1.8mmol/g at 0 °C) of the sample tested. Thermal stability was tested by proximate analysis, and MRF xerogels exhibited high thermal stability, however it was found that volatile matter increases as [M] increases, particularly for [M] 20%w/w and higher. Working capacity was determined from a series of cycling studies and capacities of 0.55, 0.58 and 0.56 mmol/g at 60 °C were observed for [M] of 10, 20 and 30%w/w, respectively. The measured heat of adsorption showed that incorporation of nitrogen functionalities results in a low energy penalty demonstrating that the adsorption mechanism is still driven by physical forces. The results obtained indicate that the family of materials studied here offer potential routes for carbon capture materials, through a combination of micropore structure development and incorporation of favourable Lewis acid-base interactions.