Na+ and K+-Exchanged Zirconium Phosphate (ZrP) as High-Temperature CO2 Adsorbents
In this contribution, the high-temperature CO2 capture performance of zirconium phosphates (ZrPs) and their cation exchanged forms were investigated for the first time. Two phases of ZrPs, i.e., α-ZrP and γ-ZrP and K+ (or Na+) exchanged α-ZrP were characterized in detail using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA). After K+ or Na+ exchange of α-ZrP (α-ZrP-K or α-ZrP-Na), the interlayer distance of the corresponding ion exchanged α-ZrP was increased from 7.6 Å to 9.0 and 8.4 Å, respectively. γ-ZrP showed a higher CO2 capture capacity (0.09 mmol/g) than α-ZrP (0.06 mmol/g) at 350 °C. The CO2 capture capacity of K+ and Na+ exchangedα-ZrPs was 0.13 and 0.14 mmol/g, respectively, at 350 °C. As increasing the adsorption temperature from 350 to 550 °C, the CO2 capture capacity slightly increased from 0.13 to 0.15 mmol/g. Our result suggested that K+ or Na+ exchange of α-ZrP could be a good candidate for CO2 capture in the temperature range of 400–500 °C, enabling the sorption enhanced hydrogen production processes more viable.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: May 1, 2013
More about this publication?
- Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Ingenta Connect is not responsible for the content or availability of external websites