Novel self-supporting zeolitic block with tunable porosity and crystallinity for water treatment
Article
Article Title | Novel self-supporting zeolitic block with tunable porosity and crystallinity for water treatment |
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ERA Journal ID | 1005 |
Article Category | Article |
Authors | Zhang, Zuhua (Author), Li, Liangfeng (Author), He, Dongning (Author), Ma, Xue (Author), Yan, Chunjie (Author) and Wang, Hao (Author) |
Journal Title | Materials Letters |
Journal Citation | 178, pp. 151-154 |
Number of Pages | 5 |
Year | 2016 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0167-577X |
1873-4979 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.matlet.2016.04.214 |
Abstract | A novel self-supporting zeolitic block with controllable porosity and mechanical properties was synthesized using coal fly ash via a two-step phase-conversion technique comprised of geopolymer foaming and hydrothermal crystallization. The mechanical properties of the block and the crystallinity of zeolite phase were controlled through tailoring the geopolymer formulation and the post-hydrothermal treatment. The zeolitic block possessed porosities of 45–55% and compressive strengths of 4.5–12 MPa, with a variation due to the geopolymer formulation (with or without slag addition). It has macro-pores, from several micrometers to hundreds micrometers, with semi-crystalline walls encrusted with well-crystalline zeolite P particles. This unique structure showed a cation exchange capacity of 24.2–54.2 meq/100 g, offering a high potential for wastewater treatment at high mass transport rate. |
Keywords | porous materials; self-supporting; zeolite; membrane; geopolymer; porosity; CEC |
ANZSRC Field of Research 2020 | 340299. Inorganic chemistry not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre for Future Materials |
Southwest University of Science and Technology, China | |
China University of Geosciences, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3vw7/novel-self-supporting-zeolitic-block-with-tunable-porosity-and-crystallinity-for-water-treatment
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