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

Oliveira, Jivago Schumacher de; Mazutti, Márcio A.; Urquieta‐González, Ernesto A.; Foletto, Edson Luiz; Jahn, Sérgío Luiz

doi:10.1590/1980-5373-mr-2016-0367

Cited by 26 publications

(13 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It can be seen that the size and shape of particles for both samples are similar, demonstrating that the use of chitin as mesopore template did not affect the morphological characteristics of ZSM-5 crystallites. This finding is consistent with a recently reported work, where carbon particles were used as mesopore template for preparation of ZSM-5 [4]. From Fig.…”

Section: Resultssupporting

confidence: 93%

“…In addition, it can be observed that the intensity of XRD peaks decreases with the increasing of the chitin amount, resulting in a decrease of the relative crystallinity, whose quantitative values expressed in terms of percentage are shown in Table I. Similar results have been observed by other researchers [4], which used different amounts of carbon particles as template for the formation of mesoporous ZSM-5. Relative crystallinity was calculated according to the standard method described in the ASTM D3906-03 [19].…”

Section: Resultssupporting

confidence: 83%

“…After, the mixture was charged into a PTFE lined stainless-steel autoclave, and aged for 7 days at 60 °C resulting in a gel solution, i.e, the nucleating gel (solution A). Secondly, the precursor gel (solution B) for the synthesis of the Na-ZSM-5 zeolites was prepared using the molar composition as follows: Then, an amount of 1 wt% of solution A was placed into the solution B under magnetic agitation for some minutes, resulting in a mixture with TPAOH/SiO 2 molar ratio =0.001 [4]. The proportions of chemical compounds above mentioned were used in order to obtain a ZSM-5 zeolite containing SiO 2 /Al 2 O 3 ratio of 30 [4,16].…”

Section: Chemicalsmentioning

confidence: 99%

“…In addition, it has been used as a potential material as adsorbent [3] and catalytic support [4] for organic pollutant removal from aqueous solutions. However, due to the predominant presence of micropores in ZSM-5 structure, this limits the accessibility of large molecules on its active surface.…”

Section: Introductionmentioning

confidence: 99%

“…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%

See 4 more Smart Citations

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

et al. 2018

View full text Add to dashboard Cite

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.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 83%

Section: Chemicalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

et al. 2018

View full text Add to dashboard Cite

show abstract

Supported dual‐acidic 1,3‐disulfoimidazolium chlorozincate@HZSM‐5 as a promising heterogeneous catalyst for synthesis of indole derivatives

Saikia

Puri

Borah

2019

Applied Organom Chemis

View full text Add to dashboard Cite

HZSM‐5‐supported Brönsted and Lewis acidic ionic solid 1,3‐disulfoimidazolium chlorozincate materials ([dsim]2[ZnCl4]@HZSM‐5) were synthesized with various ratios (3, 6, 9, 17 and 50% w/w). The heterogeneous materials were characterized via a variety of spectroscopic techniques. Dual acidity of these materials was determined using specified techniques. These acidic solids were examined as stable heterogeneous catalysts for the Fischer indole reaction of equimolar amounts of phenylhydrazine hydrochloride and various aliphatic or aromatic ketones at 80–90°C in neat condition to produce substituted indole derivatives. The efficient 17% ionic salt‐loaded HZSM‐5 composite was easily reused for ten consecutive cycles with a slight loss of its activity. The recycled catalyst was further analysed using powder X‐ray diffraction and inductively coupled plasma optical emission spectrometric techniques.

show abstract

Investigation of Basalt Properties as Heterogeneous Catalyst for Fenton Oxidation of Textile Wastewater

Saleh

Yalvaç

Arslan

et al. 2021

CLEAN Soil Air Water

View full text Add to dashboard Cite

In this study, basalt is used as a catalyst for the removal of the dyes malachite green (MG) and crystal violet (CV) from aqueous solution. First, the effect of sintering temperature on Fenton process is optimized using basalt powder. Different analysis techniques such as X-ray diffraction (XRD), X-ray fluorescence (XRF), Brunauer-Emmett-Teller (BET), and Fourier-Transform Infrared Spectroscopy (FTIR) are used to characterize basalt powder. It is concluded that Fe 2 O 3 in basalt powder is the main component responsible for the degradation of dyes in the Fenton process. The maximum degradation of the dyes (97.02% for CV and 95.71% for MG) is obtained at 10 mg L −1 dye concentration, solution pH of 6, 1 g L −1 catalyst amount, and 12 mm H 2 O 2 concentration for 2 h. The results are fitted to the second-order kinetic model. The reusability of the catalyst is explored, and the basalt showed stability in the removal efficiency for repeated five cycles. The degradation of real textile wastewater is also studied. The removal efficiency reached up to 60.33% at optimum conditions of pH 2, basalt amount of 5 g L −1 , H 2 O 2 concentration of 400 mm. The results showed that the basalt powder is successfully utilized as a heterogeneous catalyst for textile wastewater treatment.

show abstract

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

Cited by 26 publications

References 33 publications

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

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

Supported dual‐acidic 1,3‐disulfoimidazolium chlorozincate@HZSM‐5 as a promising heterogeneous catalyst for synthesis of indole derivatives

Investigation of Basalt Properties as Heterogeneous Catalyst for Fenton Oxidation of Textile Wastewater

Contact Info

Product

Resources

About