Preparation of MCM-41 type silica-bound manganese(III) Schiff-base complexes

Sutra, Pierre; Brunel, Daniel

doi:10.1039/cc9960002485

Cited by 189 publications

(100 citation statements)

References 10 publications

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“…In MCM-41, an estimated 8}27% of silicon atoms are siloxy groups, which have been utilized to covalently anchor functional groups onto the inner surface walls (1,4). D. Brunel (5) grafted functional 3-chloroproplyl onto the internal walls of MCM-41 through Si}O}Si bonds, and Jacobs (6) reported the modi"cation of 3-mercaptopropyl on the walls of MCM-41. Sulfonic acid functionalized mesoporous silicates performed well in typical strong-acid catalyzed reactions (6).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Functionalized MCM-41 with Copper– and Manganese–Phenanthroline Complexes

Zheng

Gao

Guo

2000

Journal of Solid State Chemistry

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Functionalized MCM-41 with Copper– and Manganese–Phenanthroline Complexes

Zheng

Gao

Guo

2000

Journal of Solid State Chemistry

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“…These studies have been widely revised by Moller and Bein [26]. Organic functionalization of the internal surface of a MTS host by covalently grafting various organic species into the channel walls, a post synthesis grafting process, has been widely employed to anchor specific organic groups onto surface silanols, typically using organochlorosilanes or organoalkoxysilanes as precursors for the surface modifications [26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and application of a novel sorbent, glucamine-modified MCM-41, for the removal/preconcentration of boron from waters

Kaftan

Açıkel

Eroğlu

et al. 2005

Analytica Chimica Acta

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A novel sorbent was prepared by the functionalization of an inorganic support material, MCM-41, with N-methylglucamine for the uptake of boron from aqueous solutions prior to its determination by inductively coupled plasma optical emission spectrometry (ICP-OES). Characterization of the newly synthesized material was performed using BET, XRD, TEM, SEM and DRIFTS techniques, in addition to its C and N elemental content. Sorption behavior of the novel sorbent for boron was also investigated and found to obey Freundlich and Dubinin-Radushkevich (D-R) isotherm models. The maximum amount of B (as H 3 BO 3 ) that can be sorbed by the sorbent was calculated from the D-R isotherm and was found to be 0.8 mmol B g −1 of sorbent. The applicability of the new sorbent for the removal/preconcentration of boron from aqueous samples was examined by batch method. It was found that the sorbent can take up 85% of boron in 5 min whereas quantitative sorption is obtained in 30 min. Any pH greater than 6 can be used for sorption. Desorption from the sorbent was carried out using 1.0 M HNO 3 . The sorption efficiency of the new sorbent was also compared to that of Amberlite IRA 743, a commercial resin with N-methylglucamine functional groups. Within the experimental conditions employed, the new sorbent was found to have higher sorption efficiency than the commercial resin. For method validation, spike recovery tests were performed at various concentration levels in different water types and were found to be between 83-95 and 75-92% for ultra pure water and geothermal water, respectively.

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“…The composition of the materials has to be described as (SiO 2 ) 1Àx (RSiO 1.5 ) x , where x can be as high as 25%, but cases of only 5% modification have also been reported frequently. [7,16] It is also very difficult to guarantee a homogeneous distribution of the organic groups along the pore surface. A much higher content of organic modification can be reached when sol-gel precursors with a bridging organic group, (R 0 O) 3 SiÀRÀSi(OR') 3 , are used for the preparation of the so-called periodically ordered mesoporous organosilica (PMO) materials reported by Ozin, Inagaki, and Stein independently from each other.…”

Section: Introductionmentioning

confidence: 99%

Organic Ligands Made Porous: Magnetic and Catalytic Properties of Transition Metals Coordinated to the Surfaces of Mesoporous Organosilica

Kuschel

Luka

Wessig

et al. 2010

Adv Funct Materials

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Inorganic solids with porosity on the mesoscale possess a high internal surface area and a well‐accessible pore system. Therefore, it is a relevant task to equip the surfaces of such materials with a maximum density of various organic functional groups. Among these functions it is the capability of coordinating to metal species as a ligand that is of extraordinary importance in many areas, for example, in catalysis. This paper describes how prominent ligands containing donor functions such as carboxylic, thio, chelating, or amine groups can be obtained in the form of nanoporous organosilica materials. The coordination of metal centers such as CoII, MnII, VIV, or PtIV is studied in detail. The magnetic properties of the corresponding materials and some applications in catalysis are reported. A quantitative determination of the surface density of donor atoms by distance measurements using EPR spectroscopy is shown.

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Preparation of MCM-41 type silica-bound manganese(III) Schiff-base complexes

Cited by 189 publications

References 10 publications

Synthesis and Characterization of Functionalized MCM-41 with Copper– and Manganese–Phenanthroline Complexes

Synthesis and Characterization of Functionalized MCM-41 with Copper– and Manganese–Phenanthroline Complexes

Synthesis, characterization and application of a novel sorbent, glucamine-modified MCM-41, for the removal/preconcentration of boron from waters

Organic Ligands Made Porous: Magnetic and Catalytic Properties of Transition Metals Coordinated to the Surfaces of Mesoporous Organosilica

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