ResearchSpace

Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid

Show simple item record

dc.contributor.author Ameh, AE
dc.contributor.author Fatoba, OO
dc.contributor.author Musyoka, Nicholas M
dc.contributor.author Louis, B
dc.contributor.author Petrik, LF
dc.date.accessioned 2020-08-24T10:52:48Z
dc.date.available 2020-08-24T10:52:48Z
dc.date.issued 2020-10
dc.identifier.citation Ameh, A.E., Fatoba, O.O., Musyoka, N.M., et al. 2020. Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid. Microporous and Mesoporous Materials, vol 305, pp. 1-12 en_US
dc.identifier.issn 1387-1811
dc.identifier.issn 1873-3093
dc.identifier.uri https://doi.org/10.1016/j.micromeso.2020.110332
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S1387181120303358
dc.identifier.uri http://hdl.handle.net/10204/11561
dc.description Copyright: 2019, Elsevier. Due to copyright restrictions, the attached PDF file contains the abstract of the full-text item. For access to the full-text item, please consult the publisher's website. en_US
dc.description.abstract Power generation in South Africa relies heavily on the combustion of coal and during this process, coal fly ash (CFA) is generated as by-product, which raises several environmental issues. The transformation of CFA into a value added zeolite product is a potential beneficial way to manage and reduce the negative environmental impact of the waste. The present study describes suitable formulations of the synthesis of BEA zeolite from South Africa CFA via an indirect hydrothermal process without the addition of an external silica or aluminium source. Herein, the Si/Al ratio of the nanosilica extract significantly increased from 11 to 48, 53 or 61 depending on applied conditions, thus elucidating that the major component in the extract is 92% silica, with a high purity of 94%. A pure phase BEA zeolite was obtained after the hydrothermal crystallisation of the synthesis precursor with Si/Al ratio of 53 or 61 at 140 C for 24, 48 or 72 h. The BEA zeolites are micron-sized crystals with high thermal framework stability, high surface area and contained mainly framework but some extra framework Al acid sites. Under hot liquid phase treatment, the BEA zeolite framework maintained structural integrity with no phase transformation at elevated treatment duration and temperature. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;23611
dc.subject BEA en_US
dc.subject Coal fly ash en_US
dc.subject Crystallinity en_US
dc.subject Crystal size en_US
dc.subject Framework structures en_US
dc.subject Nanosilica en_US
dc.subject Zeolite en_US
dc.title Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid en_US
dc.type Article en_US
dc.identifier.apacitation Ameh, A., Fatoba, O., Musyoka, N. M., Louis, B., & Petrik, L. (2020). Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid. http://hdl.handle.net/10204/11561 en_ZA
dc.identifier.chicagocitation Ameh, AE, OO Fatoba, Nicholas M Musyoka, B Louis, and LF Petrik "Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid." (2020) http://hdl.handle.net/10204/11561 en_ZA
dc.identifier.vancouvercitation Ameh A, Fatoba O, Musyoka NM, Louis B, Petrik L. Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid. 2020; http://hdl.handle.net/10204/11561. en_ZA
dc.identifier.ris TY - Article AU - Ameh, AE AU - Fatoba, OO AU - Musyoka, Nicholas M AU - Louis, B AU - Petrik, LF AB - Power generation in South Africa relies heavily on the combustion of coal and during this process, coal fly ash (CFA) is generated as by-product, which raises several environmental issues. The transformation of CFA into a value added zeolite product is a potential beneficial way to manage and reduce the negative environmental impact of the waste. The present study describes suitable formulations of the synthesis of BEA zeolite from South Africa CFA via an indirect hydrothermal process without the addition of an external silica or aluminium source. Herein, the Si/Al ratio of the nanosilica extract significantly increased from 11 to 48, 53 or 61 depending on applied conditions, thus elucidating that the major component in the extract is 92% silica, with a high purity of 94%. A pure phase BEA zeolite was obtained after the hydrothermal crystallisation of the synthesis precursor with Si/Al ratio of 53 or 61 at 140 C for 24, 48 or 72 h. The BEA zeolites are micron-sized crystals with high thermal framework stability, high surface area and contained mainly framework but some extra framework Al acid sites. Under hot liquid phase treatment, the BEA zeolite framework maintained structural integrity with no phase transformation at elevated treatment duration and temperature. DA - 2020-10 DB - ResearchSpace DP - CSIR KW - BEA KW - Coal fly ash KW - Crystallinity KW - Crystal size KW - Framework structures KW - Nanosilica KW - Zeolite LK - https://researchspace.csir.co.za PY - 2020 SM - 1387-1811 SM - 1873-3093 T1 - Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid TI - Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid UR - http://hdl.handle.net/10204/11561 ER - en_ZA


Files in this item

This item appears in the following Collection(s)

Show simple item record