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Conversion of South African coal fly ash into high-purity ZSM-5 zeolite without additional source of silica or alumina and its application as a methanol-to-olefins catalyst

Author: Missengue, RNM ; Losch, P ; Musyoka, Nicholas M ; Louis, B ; Pale, P ; Petrik, LF Date: Mar 2018 Characteristics of ZSM-5 synthesized from H2SO4-treated coal fly ash and fused coal fly ash extracts are compared in this study. In the synthesis process, fused coal fly ash extract (without an additional silica source) was used in the synthesis ... Read more
Hydrothermal conversion of South African coal fly ash into pure phase Zeolite Na-P1

Author: Gitari, MW ; Petrik, LF ; Musyoka, Nicholas M Date: Aug 2016 South African coal combustion power utilities generate huge amounts of coal fly ash that can be beneficiated into zeolitic products. This chapter reports on the optimization of the presynthesis and synthesis conditions for a pure-phase zeolite ... Read more
Microwave irradiation-assisted synthesis of zeolites from coal fly ash: An optimization study for a sustainable and efficient production process

Author: Makgabutlane, B ; Nthunya, LN ; Nxumalo, EN ; Musyoka, Nicholas M ; Mhlanga, SD Date: Sep 2020 Class F South African coal fly ash was used as a precursor for the synthesis of zeolite A via complete microwave irradiation. To attain optimal conditions for the synthesis of zeolite A with minimum impurities, the microwave synthesis time, ... Read more
Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid

Author: Ameh, AE ; Fatoba, OO ; Musyoka, Nicholas M ; Louis, B ; Petrik, LF Date: Oct 2020 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 ... Read more

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Browsing by Subject "Coal fly ash"

Browsing by Subject "Coal fly ash"

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