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Can I read A Fractal Description of Pore Structure in Block-copolymer Templated Mesoporous Silicates on EtoBox?
A Fractal Description of Pore Structure in Block-copolymer Templated Mesoporous Silicates by Michael A. Smith; Raul F. Lobo is a Materials Science article available to read on EtoBox.
What is A Fractal Description of Pore Structure in Block-copolymer Templated Mesoporous Silicates about?
Traditional nitrogen physisorption isotherm analysis of triblock copolymer mesoporous silicates interprets the pore structure as a bimodal distribution of mesopores and smaller micropores. Samples of SBA-15, SBA-16 and SBA-11 were prepared and calcined between 300 and 900 °C. Adsorption analysis using a fractal Frenkel-Halsey-Hill approach reveals an alternative interpretation, that the micropores are a manifestation of the fractal silica -polyethylene oxide polymer interface. We show that calcination at higher temperatures is effectively an annealing process that smoothes the mesopore surface, such that by 900 °C the surface dimension is $2. We also use the well-characterized pore structure of SBA-15 and related silicates to examine and discuss several different methods for extracting the fractal dimension from isotherm data.
Who reads A Fractal Description of Pore Structure in Block-copolymer Templated Mesoporous Silicates?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Michael A. Smith; Raul F. Lobo
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1387-1811)
- Published
- 2010
- Language
- EN
- Field
- Materials Science (Physical Sciences)