Stability of fly ash-based BEA-zeolite in hot liquid phase

Ameh, Alechine E.; Eze, Chuks Paul; Antunes, Edith; Cornelius, Mero Lee U.; Musyoka, Nicholas M.; Petrik, Leslie

doi:10.1016/j.cattod.2019.08.006

Cited by 13 publications

(15 citation statements)

References 28 publications

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“…12 depicts the relationship of total weight loss (TGA) and the area of the Q 4 environment (deconvoluted Q 4 peak from NMR) to the stability of HBEA zeolite in the liquid phase (Table S1). The structural integrity of the synthesised HBEA zeolite was compared with previous research by Ameh et al [27] in hot liquid phase. HB72 and HB Al 72 were exposed to hot liquid (H 2 O) at 150 and 200 °C for 6, 12 or 24 h, respectively.…”

Section: 5mentioning

confidence: 99%

“…BEA zeolite was synthesised according to the patent procedures [27] with few modifications. 1.905 g of each extracted nanosilica was mixed separately with 0.1 g NaOH (97%, Kimix), 4.236 g tetraethylammonium hydroxide (40% TEAOH, Sigma) and 4.661 g H 2 O to generate the following molar composition in Table 1.…”

Section: Synthesis Of Bea Zeolite From Amorphous Silicamentioning

confidence: 99%

“…The stability of the CFA based HBEA zeolites was tested in hot liquid phase as described by Ameh et al [27]. 0.5 g of the HBEA zeolite and 100 mL of deionised water were added into a 200 mL Teflon container that was then placed inside an autoclave pressure reactor.…”

Section: Stability Test Of Bea Zeolitementioning

confidence: 99%

“…Framework structure and textural properties of the crystalline HBEA zeolite Fig. 9 depicts the tetrahedral and octahedral aluminium environments in the different synthesised products using 27 Al MAS NMR. to Eq.…”

Section: 4mentioning

confidence: 99%

“…The objectives are: i) enhance the reactivity of the aluminosilicate species during the dissolution stage, ii) allow the proper control of the molar Si/Al ratio promoting the synthesis of high silica zeolite without external addition of silica or alumina sources and iii) improve the crystal purity, framework stability, textural properties, structural activity of high silica zeolites. Recently, Petrik et al [25], Missengue et al [26] and Ameh et al [27] proposed a multi-step process assisted by hydrothermal treatment for the production ZSM-5 and BEA zeolites. Herein, this study proposes to design and optimise the synthesis steps of high silica BEA zeolite from Class F CFA.…”

Section: Introductionmentioning

confidence: 99%

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Section: 5mentioning

confidence: 99%

Section: Synthesis Of Bea Zeolite From Amorphous Silicamentioning

confidence: 99%

Section: Stability Test Of Bea Zeolitementioning

confidence: 99%

Section: 4mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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