Mesoporous ZSM-5 catalysts: Preparation, characterisation and catalytic properties. Part I: Comparison of different synthesis routes

Chou, Y; Cundy, Colin S.; Garforth, Arthur A.; Zholobenko, Vladimir L.

doi:10.1016/j.micromeso.2005.10.014

Cited by 59 publications

(30 citation statements)

References 27 publications

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“…These results demonstrate that the carbon presence influences the crystallization process of the ZSM-5 structure. Similar behavior has been found by other researchers 16,21 . It is important to notice that the SiO 2 /Al 2 O 3 ratio of the conventional ZP sample was 31.5 and remained practically unchanged for samples synthesized in the presence of different amounts of carbon particles (Table 1).…”

Section: Characterizationsupporting

confidence: 92%

“…Due to this fact, the preparation of mesoporous ZSM-5 zeolites has attracted a great interest in the catalytic applications [13][14][15] . Among the several methods showed in the literature to produce mesoporous zeolites [16][17][18][19] , the carbon-templating method has demonstrated to be relatively facile and inexpensive, being that after burning of the carbon particles, zeolite crystals with intracrystalline mesoporous are obtained 16,20,21 . However, works reporting the preparation of mesoporous Fe 2 O 3 -supported ZSM-5 zeolites employing a nucleating gel and carbon particles as mesopores template in the synthesis procedure for application as photo-Fenton catalyst under visible light has not been reported yet.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Mesoporous Fe2O3-Supported ZSM-5 Zeolites by Carbon-Templating and their Evaluation as Photo-Fenton Catalysts to Degrade Organic Pollutant

et al. 2016

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Mesoporous Fe 2 O 3 -supported ZSM-5 zeolites were prepared by carbon-templating and subsequently evaluated as photo-Fenton catalysts to degrade a dye used as a model heavy organic pollutant. The synthesis procedure of the mesoporous ZSM-5 zeolites was performed employing a nucleating gel and carbon particles as mesopores template. Thereafter, the precursor salt of the iron oxide (Fe 2 O 3 ) was impregnated and then calcined to obtain the final catalyst. For comparison purposes, a conventional Fe 2 O 3 -supported ZSM-5 zeolite was also prepared. The results showed that the amount of intracrystalline mesopores formed in the ZSM-5 crystals was influenced by the amount of carbon added into the synthesis mixture. In comparison to the conventional prepared catalyst, the mesoporous Fe 2 O 3 /ZSM-5 ones showed an improved performance in the degradation of the target organic pollutant by the photo-Fenton reaction, which was attributed to the improvement of their textural properties as consequence of the mesopores generation.

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Section: Characterizationsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Preparation of Mesoporous Fe2O3-Supported ZSM-5 Zeolites by Carbon-Templating and their Evaluation as Photo-Fenton Catalysts to Degrade Organic Pollutant

et al. 2016

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“…i Select a reliable standard preparation based on the International Zeolite Association to obtain a high Al-containing ZSM-5 zeolite [16]. ii Repeat this procedure in the presence of biomass-derived compounds extracted by alkaline hydrolysis treatment of biomass residues.…”

Section: Resultsmentioning

confidence: 99%

Insights to Achieve a Better Control of Silicon-Aluminum Ratio and ZSM-5 Zeolite Crystal Morphology through the Assistance of Biomass

et al. 2016

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Abstract:The present study attempts to provide insights for both the chemical composition (Si/Al) and the crystal morphology of ZSM-5 zeolites while using biomass template compounds in the synthesis. The solution containing biomass-derivative compounds was obtained after treating biomass in a sodium hydroxide aqueous solution under reflux. The latter alkaline solution was used as a solvent for zeolite nuclei ingredients to form the gel phase under hydrothermal conditions (170˝C during 24, 48 or 72 h). This approach allowed for preparing MFI zeolites having a broad range of Si/Al ratio, i.e., from 25 to 150. Likewise, MFI crystals with different morphologies could be obtained, being different from the pristine zeolite formed in the absence of biomass.

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“…Carbon particles [4,[5][6][7], ammonium-modified chitosan [8], amphiphilic compound [9], and monolithic nitrogen-doped carbon [10] have been used as mesopore templates. However, studies using chitin as template for the development of mesopores into the ZSM-5 zeolite network has not been reported yet.…”

Section: Introductionmentioning

confidence: 99%

Use of chitin as a template for the preparation of mesostructured ZSM-5

et al. 2018

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Use of chitin as a template for the preparation of mesostructured ZSM-5(Uso de quitina como um composto auxiliar na preparação de ZSM-5 mesoestruturada) AbstractIn this work, mesostructured ZSM-5 zeolite was prepared using chitin as a new template to produce mesoporosity. Different amounts of chitin were used for the synthesis of ZSM-5 in order to verify its influence on the formation of mesopores. All samples were prepared by conventional hydrothermal process. For comparison purposes, ZSM-5 zeolite has also been synthesized without a presence of chitin. The samples were characterized by X-ray diffraction, scanning electron microscopy and N 2 adsorption techniques. Experimental results showed that the mesopores volume of the obtained samples increased with increasing amount of chitin in the reaction mixture. Therefore, chitin showed to be a promising template for obtaining the ZSM-5 with mesoporous property.

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Mesoporous ZSM-5 catalysts: Preparation, characterisation and catalytic properties. Part I: Comparison of different synthesis routes

Cited by 59 publications

References 27 publications

Preparation of Mesoporous Fe2O3-Supported ZSM-5 Zeolites by Carbon-Templating and their Evaluation as Photo-Fenton Catalysts to Degrade Organic Pollutant

Preparation of Mesoporous Fe2O3-Supported ZSM-5 Zeolites by Carbon-Templating and their Evaluation as Photo-Fenton Catalysts to Degrade Organic Pollutant

Insights to Achieve a Better Control of Silicon-Aluminum Ratio and ZSM-5 Zeolite Crystal Morphology through the Assistance of Biomass

Use of chitin as a template for the preparation of mesostructured ZSM-5

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