Complexation of crystal-like mesoporous phenylene-silica with Cr(CO)3 and catalytic performance in the oxidation of cyclooctene

Coelho, Ana C.; Balula, Salete S.; Antunes, Margarida M.; Gerganova, Tsvetelina I.; Bion, Nicolas; Ferreira, Paula; Pillinger, Martyn; Valente, Anabela A.; Rocha, João; Gonçalves, Isabel S.

doi:10.1016/j.molcata.2010.08.010

Cited by 12 publications

(5 citation statements)

References 34 publications

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“…The yield of cyclooctene oxide after 12 h period reached 84.3% with 95.3% selectivity. There have been reports showing that selective oxidation of cyclooctene using TBHP as an oxidant gives 2-cyclooctene-1-ol and/or 2-cyclooctene-1-one as byproducts. , 1 H NMR measurement was performed to clarify the byproducts produced over Zr-MOF-bpy-CuBr 2 after 12 h of the reaction time. 2-Cyclooctene-1-ol was detected in our system while the peaks of 2-cyclooctene-1-one were not observed.…”

Section: Resultsmentioning

confidence: 99%

Immobilization of Cu Complex into Zr-Based MOF with Bipyridine Units for Heterogeneous Selective Oxidation

et al. 2015

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A catalytically competent Cu species has been immobilized within the framework of a Zr-based metal−organic framework with bipyridine units, Zr-MOF-bpy, by a simple post synthetic modification method from CuBr2 (Zr-MOF-bpy-CuBr2) and used for the selective oxidation of cyclooctene to cyclooctene oxide. Zr-MOF-bpy was synthesized by a simple solvothermal method and was shown to have a UiO-type structure. Diffuse reflectance UV-vis and XAFS measurements have revealed that the immobilized Cu species has a square planar geometry of two N atoms and two Br atoms. Zr-MOF-bpyCuBr2 catalyzed the selective oxidation of cyclooctene to cyclooctene oxide with high activity and selectivity in the presence of tert-butyl hydroperoxide as an oxidant. In addition, the catalytic ability of Zr-MOF-bpy-CuBr2 was demonstrated to be superior to that of the corresponding homogeneous catalyst ((bpy)CuBr2). It was also confirmed that Zr-MOF-bpy-CuBr2 can be reused as a heterogeneous catalyst without significant loss of its activity and selectivity.

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Section: Resultsmentioning

confidence: 99%

Immobilization of Cu Complex into Zr-Based MOF with Bipyridine Units for Heterogeneous Selective Oxidation

et al. 2015

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“…11 Some examples of post-synthesis functionalization in phenylene PMO deal with the sulfonation of the aromatic ring 10 and the incorporation of arenetricarbonyl complexes of Mo and Cr. [12][13][14] In 2007, amination of the phenylene PMO was also described. The authors claimed the amination of 28% of the phenylene moieties in crystal-like mesoporous phenylenesilica by a two-step chemical transformation process, involving a strong acid and reduction agent, while preserving both the ordered meso-structure and crystal-like molecular scale periodicity of the parent material.…”

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confidence: 99%

Microwave assisted N-alkylation of amine functionalized crystal-like mesoporous phenylene-silica

et al. 2013

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N-alkylation reaction of amine functionalized phenylene moieties in crystal-like mesoporous silica is successfully achieved with about 87% of conversion in two reaction cycles. A potassium iodide catalyzed method commonly used for the selective N-monoalkylation of aniline is adapted and optimized to the N-monoalkylation reactions of the amine functionalized periodic mesoporous phenylene-silica (NH2-PMO) under microwave irradiation with preservation of the ordered mesostructure and of the crystal-like molecular scale periodicity of the material. This functionalization opens an avenue for the preparation of new materials with different amino-alkyl groups specially designed for a desired application, namely on the adsorption or catalytic fields.

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“…74 The phenyl moiety has also been partially complexed with carbonyl ligated Cr or Mo after chemical vapour deposition, 54 or liquid phase contacting (Fig. 6d) 221 using the corresponding hexacarbonyl metal complexes. Polymerisation of phenylacetylene and dehydrochlorination of 2-chloro-2-methylbutane show that the catalytic activity of the immobilised complexes strongly Fig.…”

Section: Physico-chemical Stabilitymentioning

confidence: 99%

Tailoring nanohybrids and nanocomposites for catalytic applications

et al. 2013

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Complexation of crystal-like mesoporous phenylene-silica with Cr(CO)3 and catalytic performance in the oxidation of cyclooctene

Cited by 12 publications

References 34 publications

Immobilization of Cu Complex into Zr-Based MOF with Bipyridine Units for Heterogeneous Selective Oxidation

Immobilization of Cu Complex into Zr-Based MOF with Bipyridine Units for Heterogeneous Selective Oxidation

Microwave assisted N-alkylation of amine functionalized crystal-like mesoporous phenylene-silica

Tailoring nanohybrids and nanocomposites for catalytic applications

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