Next Article in Journal
Transverse Anderson Localization in Disordered Glass Optical Fibers: A Review
Previous Article in Journal
Green Perylene Bisimide Dyes: Synthesis, Photophysical and Electrochemical Properties
Article Menu

Export Article

Open AccessArticle
Materials 2014, 7(8), 5507-5519; doi:10.3390/ma7085507

Methylcellulose-Directed Synthesis of Nanocrystalline Zeolite NaA with High CO2 Uptake

1
Department of Materials and Environmental Chemistry, Stockholm University, Stockholm 10691, Sweden
2
Berzelii Center EXSELENT on Porous Materials, Stockholm University, Stockholm 10691, Sweden
3
Division of Materials Science, Luleå University of Technology, Luleå 971 87, Sweden
*
Author to whom correspondence should be addressed.
Received: 27 May 2014 / Revised: 15 July 2014 / Accepted: 18 July 2014 / Published: 28 July 2014
(This article belongs to the Section Porous Materials)
View Full-Text   |   Download PDF [1397 KB, uploaded 28 July 2014]   |  

Abstract

Zeolite NaA nanocrystals with a narrow particle size distribution were prepared by template-free hydrothermal synthesis in thermo-reversible methylcellulose gels. The effects of the amount of methylcellulose, crystallization time and hydrothermal treatment temperature on the crystallinity and particle size distribution of the zeolite NaA nanocrystals were investigated. We found that the thermogelation of methylcellulose in the alkaline Na2O-SiO2-Al2O3-H2O system played an important role in controlling the particle size. The synthesized zeolite nanocrystals are highly crystalline, as demonstrated by X-ray diffraction (XRD), and scanning electron microscopy (SEM) shows that the nanocrystals can also display a well-defined facetted morphology. Gas adsorption studies on the synthesized nanocrystalline zeolite NaA showed that nanocrystals with a size of 100 nm displayed a high CO2 uptake capacity (4.9 mmol/g at 293 K at 100 kPa) and a relatively rapid uptake rate compared to commercially available, micron-sized particles. Low-cost nanosized zeolite adsorbents with a high and rapid uptake are important for large scale gas separation processes, e.g., carbon capture from flue gas. View Full-Text
Keywords: zeolite NaA; nanocrystals; hydrothermal synthesis; carbon dioxide adsorption zeolite NaA; nanocrystals; hydrothermal synthesis; carbon dioxide adsorption
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Shakarova, D.; Ojuva, A.; Bergström, L.; Akhtar, F. Methylcellulose-Directed Synthesis of Nanocrystalline Zeolite NaA with High CO2 Uptake. Materials 2014, 7, 5507-5519.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top