Journal article

Publication year: 2014

Pages: 6583-6592

Journal: Physical Chemistry Chemical Physics

Volume number: 16

Issue number: 14

ISSN: 1463-9076

Open access status: Hybrid

DOI Link: https://doi.org/10.1039/c3cp55072a

Publisher: Royal Society of Chemistry

Abstract: 
Characterization of mesoporous adsorbents is traditionally performed in terms of the pore size distribution with bulk methods like physisorption and mercury intrusion. But their application relies on assumptions regarding the basic pore geometry. Although novel tools have enabled the quantitative interpretation of physisorption data for adsorbents having a well-defined pore structure the analysis of disordered mesoporosity still remains challenging. Here we show that small angle X-ray scattering (SAXS) combined with chord length distribution (CLD) analysis presents a precise and convenient approach to determine the structural properties of two-phase (solid-void) systems of mesopores. Characteristic wall (solid) and pore (void) sizes as well as surface areas are extracted without the need to assume a certain pore shape. The mesoporous structure of modern, commercially available fully porous and core-shell adsorbent particles is examined by SAXS/CLD analysis. Mean pore size and surface area are compared with results obtained from nitrogen physisorption data and show excellent agreement.

Harvard Citation style: Stoeckel, D., Wallacher, D., Zickler, G., Perlich, J., Tallarek, U. and Smarsly, B. (2014) Coherent analysis of disordered mesoporous adsorbents using small angle X-ray scattering and physisorption experiments, Physical Chemistry Chemical Physics, 16(14), pp. 6583-6592. https://doi.org/10.1039/c3cp55072a

APA Citation style: Stoeckel, D., Wallacher, D., Zickler, G., Perlich, J., Tallarek, U., & Smarsly, B. (2014). Coherent analysis of disordered mesoporous adsorbents using small angle X-ray scattering and physisorption experiments. Physical Chemistry Chemical Physics. 16(14), 6583-6592. https://doi.org/10.1039/c3cp55072a