Synthesis and characterization of [Cr,Al]-ZSM-5 zeolites

Giannetto, G.; García, Luis; Papa, José; Yánez, Francisco; Goldwasser, Mireya R.; Linares, Carlos F.; Moronta, Delfı́n; Méndez, Bernardo; Navarro, Caribay Urbina de; Monque, R.

doi:10.1016/s0144-2449(97)00064-x

Cited by 22 publications

(18 citation statements)

References 19 publications

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“…Mesoporous ZSM‐5 zeolite was achieved by using the method described by Hoang and Dien with some modification. It is well‐known that catalytic activity of a zeolite for an oxidation reaction was able to enhance by loading a transition metal over the zeolite support . Thus, in this work, Cr and W were loaded onto the ZSM‐5 zeolites using a wetness impregnation method .…”

Section: Resultsmentioning

confidence: 99%

“…To extend the catalytic activity of the ZSM‐5 zeolite, Cr/ZSM‐5, and W‐Cr/ZSM‐5 catalysts were prepared by loading chromium and tungsten over the zeolite support using the conventional incipient wetness impregnation method . The as‐synthesized ZSM‐5 particles were added into the chromium chloride solution (prepared from CrCl 3 .6H 2 O, 96 %, Sigma Aldrich) and stirred at 30 °C for several hours.…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, acidity (i.e., concentration and strength) and particle size of the zeolite significantly influence its catalytic properties. The catalytic activity can be enhanced by introducing other elements such as Cr, W, B, and Ce into the ZSM‐5 zeolite . In this context, transition metal‐loaded zeolites, including Cr/ZSM‐5 and W‐Cr/ZSM‐5, are interesting materials to be predicted as high active catalysts in the oxidation of fats and vegetable oils.…”

Section: Introductionmentioning

confidence: 99%

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Cleavage of double bond using metal‐loaded ZSM‐5 zeolite catalysts for renewable biochemical application

2018

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This work aimed to investigate the use of mesoporous metal-loaded ZSM-5 zeolites for efficient cleavage of C═C double bonds for renewable biochemical applications. In the presence of a benign H 2 O 2 , these catalysts exhibited the high catalytic activities for oxidation of double bonds in styrene and fatty acids. Selective oxidation of styrene forming benzaldehyde was first studied using mesoporous Cr/ZSM-5 zeolite as a model reaction to evaluate the catalytic activity in the cleavage of the double bond. Oxidation of double bonds in some typical fatty acids such as oleic, erucic, and linoleic acids was carried out subsequently following the model reaction. The mesoporous Cr/ZSM-5 zeolite showed a high conversion yield of styrene (over 85 % after 6 h reaction at 70 8C) and high selectivity for benzaldehyde (over 74 %) as well as a high conversion yield of cleavage of double bond in fatty acids. To enhance the activity of the catalyst, tungsten transition metal was loaded on the Cr/ZSM-5 particles. The mesoporous W-Cr/ZSM-5 zeolite was then applied as a catalyst for oxidative cleavage of several fatty acids for the generation of useful, low molecular weight chemicals from renewable natural resources. The results showed that the mesoporous W-Cr/ZSM-5 zeolite provided a higher conversion of fatty acids but lower selectivity in aldehyde type products than the mesoporous Cr/ZSM-5 zeolite. The influences of reaction conditions such as reaction time and temperature on the efficiency of oxidation were also investigated.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cleavage of double bond using metal‐loaded ZSM‐5 zeolite catalysts for renewable biochemical application

2018

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“…Thus exploration of new composite zeolite systems attracts more and more interest in scientific and industrial field [4][5][6]. As the development of zeolites modification, isomorphous substitution of silicon with heteroatom in the composite molecular sieves has been researched [7][8][9]. An aluminosilicate or heteroatom-silicate framework has a negative charge whereas the zeolite is neutral, so the cations such as Na + or H + are needed to balance the charges.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of composite molecular sieves M1-MFI/M2-MCM-41(M1, M2= Ni, Co) with high heteroatom content and their catalytic properties for hydrocracking of residual oil

et al. 2010

Journal of Colloid and Interface Science

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“…In order to enhance the catalytic activity of the zeolite, many works to introduce the heteroatom into the zeolite have been done [10][11][12]. Recently, the structure and catalytic activities of Ni-ZSM-5, Cu-ZSM-5 and Zn-ZSM-5 prepared by secondary synthesis methods are being studied [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of mesoporous zeolite Ni-MFI with high nickel contents by using the ionic complex [(C4H9)4N]+2[Ni(EDTA)]2− as a template

Xiao

Mao

et al. 2009

Journal of Colloid and Interface Science

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Synthesis and characterization of [Cr,Al]-ZSM-5 zeolites

Cited by 22 publications

References 19 publications

Cleavage of double bond using metal‐loaded ZSM‐5 zeolite catalysts for renewable biochemical application

Cleavage of double bond using metal‐loaded ZSM‐5 zeolite catalysts for renewable biochemical application

Synthesis and characterization of composite molecular sieves M1-MFI/M2-MCM-41(M1, M2= Ni, Co) with high heteroatom content and their catalytic properties for hydrocracking of residual oil

Synthesis of mesoporous zeolite Ni-MFI with high nickel contents by using the ionic complex [(C4H9)4N]+2[Ni(EDTA)]2− as a template

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