Dehydrogenation of Cyclohexanol on Fe, Ti-MCM-41 Mesoporous Materials

Popova, Margarita; Szegedi, Ágnes; Lázár, K.; Dimitrova, A.

doi:10.1007/s10562-011-0652-9

Cited by 10 publications

(4 citation statements)

References 51 publications

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“…4,5 Recently, the incorporation of Al 2 , Ti 6 , Ni 4 , and Mn 7 into MCM-41 was reported to catalyze various cracking, methanation, and oxidation reactions. Mesoporous silica materials with magnetic properties have been prepared using Fe, Co, Ba, and Ni [8][9][10] and applied as magnetic adsorbents to remove organic and inorganic pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…Fe-containing MCM-41 (denoted as Fe-MCM-41) has shown great potential as a catalyst in many reactions and as a sensor for molecular identication. 8 Fe-MCM-41 has shown good catalytic activity in oxidation reactions. 11,12 Continuing efforts are being made to improve or synthesize new catalysts to oxidize cyclohexane under mild conditions.…”

Section: Introductionmentioning

confidence: 99%

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Novel protonated Fe-containing mesoporous silica nanoparticle catalyst: excellent performance cyclohexane oxidation

2017

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel protonated Fe-containing mesoporous silica nanoparticle catalyst: excellent performance cyclohexane oxidation

2017

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“…The vapor phase catalytic dehydrogenation of Cyhol to Cyhon have been studied over mono, bi-, and trimetallic catalytic systems such as Cu-ZnO-SiO 2 [13], Cu-MgO [9], Cu-SBA-15 [15][16], Cu-Al 2 O 3 [17][11], [19], FeTi/MCM-41 [20], AlPO 4 [21],…”

Section: Introductionmentioning

confidence: 99%

Synthesis of high surface area zinc oxide supported copper catalysts and its catalytic activity studies on dehydrogenation of cyclohexanol

Koppadi

Nekkala

Bhanuchander

et al. 2022

Preprint

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Rice-derived high surface area ZnO support (HSA-ZnO) is prepared by a novel thermal decomposition technique using rice grains as a sacrificial exo-template and zinc acetate trihydrate as an ZnO precursor. Further, copper supported HSA-ZnO catalysts with different copper loadings (4, 8, 12 and 16 wt.%) were prepared by using wet impregnation method and characterized by various physicochemical techniques such as X-ray diffraction (XRD), thermo gravimetric analysis (TGA), BET surface area, temperature programmed techniques for CO2 desorption (CO2-TPD) and reduction (H2-TPR) and N2O pulse chemisorption measurements. The as-prepared ZnO support material exhibited moderately high surface area of 145 m2/g, which is six times higher than commercial ZnO. The screening of Cu-modified HSA-ZnO catalysts were evaluated in the dehydrogenation of cyclohexanol to cyclohexanone reaction in a continuous flow reactor. In this work, the effect of temperature, the influence of copper loadings and the catalyst stability were thoroughly investigated. The catalyst exhibited varied properties with Cu loading and among the studied catalysts, 12 wt.% Cu/HSA-ZnO catalyst exhibited highest cyclohexanol conversion of 75% and 89% cyclohexanone selectivity was achieved. The results were substantiated and confirmed by N2O pulse chemisorption and temperature programmed studies.

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“…[3][4][5] However, the lack of necessary active sites of pure silica M41S materials may limit their usages as catalysts. 6 Therefore, numerous investigations have been focused on the incorporation of transition metal ions like Mn, 7 Fe, 8 V, 9 Ni 10 and Ti 11 and some main group elements like B, 12 Al 13 14 and Ga 15 into the materials to generate active sites in order to improve the catalytic activity. In principle, bimetal incorporation is able to modify the surface properties of mesoporous silicate more effectively than single metal in the catalysis field, which is getting attraction among researchers recently.…”

Section: Introductionmentioning

confidence: 99%

The Synergistic Effect of Bimetallic Zn–Ti in MCM-41 Support for the Improvement of Catalytic Activity

He¹,

Gao²,

Gao³

et al. 2016

j nanosci nanotechnol

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A series of bimetallic Zn-Ti-MCM-41 materials were synthesized through direct hydrothermal method and characterized by X-ray diffraction (XRD), N 2 adsorption-desorption isotherm, transmission electron microscopy (TEM), inductive coupled plasma (ICP), X-ray photoelectron spectra (XPS), UV-vis spectroscopy, Fourier transform infrared spectra (FT-IR) and ammonia temperature programmed desorption (NH 3 -TPD). The catalytic activities of synthesized materials were evaluated in the direct oxidation of phenol using H 2 O 2 as the oxidant. The results indicated that all obtained materials possessed ordered two-dimension (2D) hexagonal mesostructure with narrow pore distribution and high specific surface area. Most of Zn and Ti species were incorporated into the silica framework without affecting the mesoscopic nature of matrix. Particularly, a strong interaction was identified between the zinc and titanium species: (1) the presence of zinc promotes more incorporation of titanium atoms into the silica framework; (2) new medium surface acid sites introduced by the adsorption of NH 3 on the surface of zinc species were emerged for bimetallic catalysts, which increase the selectivity to diphenol in the oxidation of phenol.

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Dehydrogenation of Cyclohexanol on Fe, Ti-MCM-41 Mesoporous Materials

Cited by 10 publications

References 51 publications

Novel protonated Fe-containing mesoporous silica nanoparticle catalyst: excellent performance cyclohexane oxidation

Novel protonated Fe-containing mesoporous silica nanoparticle catalyst: excellent performance cyclohexane oxidation

Synthesis of high surface area zinc oxide supported copper catalysts and its catalytic activity studies on dehydrogenation of cyclohexanol

The Synergistic Effect of Bimetallic Zn–Ti in MCM-41 Support for the Improvement of Catalytic Activity

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