Cobalt oxide species supported on SBA-15, KIT-5 and KIT-6 mesoporous silicas for ethyl acetate total oxidation

Tsoncheva, Tanya; Ivanova, Lyubomira; Rosenholm, Jessica M.; Lindén, Mika

doi:10.1016/j.apcatb.2008.12.015

Cited by 181 publications

(102 citation statements)

References 86 publications

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“…3), these Co containing MOR catalysts all show typical diffraction peaks corresponding to the characteristic of MOR structure, indicating that addition of various second components did not change the XRD patterns significantly [28]. In addition, no obvious diffraction peaks corresponding to crystallized Co 3 O 4 [29] are observed suggesting the good dispersion of cobalt species on the internal/external surface of these Co containing MOR catalysts. (Fig.…”

Section: Bet and Xrd Resultsmentioning

confidence: 91%

Promotional effects and mechanism of second cations on activity and stability of Co-MOR for nitrous oxide decomposition: UV–Vis spectroscopy and EXAFS analysis

Zhang

Shen

et al. 2013

Chemical Engineering Journal

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Section: Bet and Xrd Resultsmentioning

confidence: 91%

Promotional effects and mechanism of second cations on activity and stability of Co-MOR for nitrous oxide decomposition: UV–Vis spectroscopy and EXAFS analysis

Zhang

Shen

et al. 2013

Chemical Engineering Journal

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“…As is known, support material is an important component for the noble metal-loaded catalysts [9]. Up to now, different types of supports, such as porous materials, zirconia, alumina and silica are comprehensively investigated in hydrocarbons catalytic oxidation [10][11][12]. Among them, mesoporous materials (such as SBA-15 and MCM-48) possess narrow pore size distribution, high surface area, and potential ability to inhibit active particles growth and aggregation in their * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Ligand-assisted preparation of highly active and stable nanometric Pd confined catalysts for deep catalytic oxidation of toluene

Peng

Wang

et al. 2010

Journal of Hazardous Materials

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a b s t r a c tIn this study, mesoporous SBA-15 supported Pd catalysts were synthesized through impregnation and grafting approaches. Moreover, the influences of different solvents (ethanol, H 2 O, tetrahydrofuran, dimethyl sulphoxide and N,N-dimethylformamide) on the dispersion of supported Pd nanoparticles were also systematically investigated. The prepared materials were comprehensively explored by various techniques, including XRD, EDS, ICP-OES, H 2 chemisorption, N 2 adsorption/desorption, TG-DSC, FT-IR, TEM and STEM. It is found that the traditional impregnation method has some disadvantages in obtaining highly dispersed Pd active phase. Whereas, the grafting method could highly disperse Pd nanoparticles within the mesoporous channels of support material, and the grafting procedure should be promising in designing highly dispersed Pd particles on the silica-based mesoporous materials. The catalyst prepared via the grafting procedure possesses much higher activity and selectivity than that prepared by impregnation method for deep catalytic oxidation of toluene.

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“…1(A). All samples exhibit one intensity peak at 0.8-1.0 • along with other two weak peaks at 1.3-2.0 • , which can be assigned to the (1 0 0), (1 1 0) and (2 0 0) reflections of the two-dimensional hexagonal mesostructure with a space group of p6mm symmetry [32]. The well resolved diffraction peaks indicate that the incorporation of Al atoms has negligible effects on the original mesostructure of the synthesized catalysts.…”

Section: Xrd and N 2 Adsorption/desorptionmentioning

confidence: 99%

Nanometric palladium confined in mesoporous silica as efficient catalysts for toluene oxidation at low temperature

He¹,

Zhang²,

Yue³

et al. 2012

Applied Catalysis B: Environmental

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a b s t r a c tShort column SBA-15 supported Pd mesoporous catalysts with controllable acidity and expanded microporosity were firstly prepared through a simple "two-solvents" approach. The catalytic performances of the synthesized catalysts were evaluated for toluene oxidation. The characterization results reveal that Al atoms prefer to be tetrahedrally coordinated in the framework of the synthesized materials, and the acid sites can significantly promote Pd particle dispersion and metallic Pd oxidation due to their electrophilic characters. The Pd-confined catalysts possess high toluene turnover frequencies and toluene can be totally converted to CO 2 and H 2 O below 210 • C. The oxidation reaction can be suppressed by water vapor due to the formation of inactive Pd-hydroxides, and the synthesized catalyst has a good hydrothermal stability and high tolerance to moisture. Both the specific surface area and the toluene adsorption/desorption property are not the main factors determining the catalytic activity. Overall, the toluene oxidation performance is closely related to the support microporosity and acidity, the Pd dispersion and the CO 2 desorption capability.

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Cobalt oxide species supported on SBA-15, KIT-5 and KIT-6 mesoporous silicas for ethyl acetate total oxidation

Cited by 181 publications

References 86 publications

Promotional effects and mechanism of second cations on activity and stability of Co-MOR for nitrous oxide decomposition: UV–Vis spectroscopy and EXAFS analysis

Promotional effects and mechanism of second cations on activity and stability of Co-MOR for nitrous oxide decomposition: UV–Vis spectroscopy and EXAFS analysis

Ligand-assisted preparation of highly active and stable nanometric Pd confined catalysts for deep catalytic oxidation of toluene

Nanometric palladium confined in mesoporous silica as efficient catalysts for toluene oxidation at low temperature

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