Reaction of the novel Ru3(CO)10[Ph2P(CH2)2Si(OEt3)]2 complex on SBA-15 and MCM-41 mesoporous silicas

Carniato, Fabio; Secco, Andrea; Gatti, Giorgio; Marchese, Leonardo; Sappa, Enrico

doi:10.1007/s10971-009-2018-y

Cited by 9 publications

(10 citation statements)

References 19 publications

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“…The derivatives containing dpts are suitable for grafting to sol-gel silica containing materials using the triethoxysilyl functionalities. This behaviour had already been observed for ruthenium carbonyl clusters [9]. In the case of cobalt, however, after grafting the unmodified cluster was found.…”

Section: Discussionsupporting

confidence: 64%

“…As a consequence, products different from those expected are obtained, usually in low yields [7]. More recently, however, we found that 2(diphenylphosphino)ethyl-triethoxysilane (dpts) reacts with Ru 3 (CO) 12 forming the substituted complexes Ru 3 (CO) 12Àn L n [L = Ph 2 P(CH 2 ) 2 Si(OCH 2 CH 3 ) 3 ; n = 1,2] in high yields and that these complexes can be easily grafted to the mesoporous silica materials SBA-15 and MCM-41 [9].…”

Section: Introductionmentioning

confidence: 99%

“…Complex (1) was reacted with 3-(triethoxysilyl)propyl isocyanate (tsi) and with tetraethoxysilane (teos); the product of the reaction with tsi, Co 2 (CO) 6 [H 3 CC"CCH 2 CH 2 OC(@O)NH(CH 2 ) 3 Si(OCH 2 CH 3 ) 3 ], (9) was characterized by analytical and spectroscopic techniques. The material obtained with teos was also characterized by solidstate spectroscopies.…”

Section: Introductionmentioning

confidence: 99%

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Reactions of Co2(CO)8 and of Co2(CO)6L (L=3-pentyn-1-ol, 1,4-butyn-diol or 2-methyl-3-butyn-2-ol) with 2(diphenylphosphino)ethyl-trietoxysilane and tris(hydroxymethyl)phosphine for applications to new sol–gel materials

Carniato

Gatti

Gervasio

et al. 2009

Journal of Organometallic Chemistry

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Section: Discussionsupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reactions of Co2(CO)8 and of Co2(CO)6L (L=3-pentyn-1-ol, 1,4-butyn-diol or 2-methyl-3-butyn-2-ol) with 2(diphenylphosphino)ethyl-trietoxysilane and tris(hydroxymethyl)phosphine for applications to new sol–gel materials

Carniato

Gatti

Gervasio

et al. 2009

Journal of Organometallic Chemistry

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“…Solid phase hybrid materials are finding an increasingly wide range of applications in device design, environmental monitoring, separations science, and catalysis. − Amorphous silica gels and sol–gels combined with polymers define a major portion of these hybrid materials for all these applications. − ,− These silica based organic–inorganic materials offer a rigid matrix with high porosity and good thermal stability. , Our own studies have focused on silica polyamine composites (SPC) and have led to a wide range of metal-selective materials that in most cases provide the high loading associated with polymer based materials while providing a more rigid, porous, and hydrophilic surface that does not shrink or swell. − These patented materials are now in use in medium to large scale metal recovery projects and promise to offer more efficient on-stream processing of mining leaches and waste streams . Copper recovery is among the most industrially important mineral industries.…”

Section: Introductionmentioning

confidence: 99%

Sol–Gel Synthesis and Characterization of Silica Polyamine Composites: Applications to Metal Ion Capture

Allen

Rosenberg

Johnston

et al. 2012

ACS Appl. Mater. Interfaces

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A sol-gel method has been developed for the synthesis of composite materials analogous to the previously reported and commercialized silica polyamine composite (SPC) materials made from amorphous silica. Monolithic xerogels were formed using a two-step procedure with no templating agent using acid catalyzed followed by base catalyzed hydrolysis. This reaction was followed by (1)H NMR. Initial sol-gels were formed using a methyltrimethoxysilane (MTMOS) and 3-chloropropyltrimethoxysilane (CPTMOS) mixture. Elemental analyses and (13)C CPMAS NMR confirmed incorporation of both monomeric units into the surface structure. Some control over surface morphology was achieved by adjusting synthetic conditions. The resulting xerogels were reacted with poly(allylamine) (PAA) to give composite materials which showed much lower metal ion capacities than the commercially available amorphous silica analogs. The low degree of reaction of the chloropropyl groups indicated they were not surface-available to the polyamine. Addition of tetramethoxysilane (TMOS) produced a structural matrix and resulted in higher chloride utilization (reaction of surface chloropropyl groups with the polyamine). The ratio of the three siloxane monomeric components was varied until the resulting polyamine composite xerogels had metal capacities comparable with the commercialized SPC materials. These composites had narrower average pore size distributions and fewer small pores. Further modification of these composites with metal selective ligands showed material characteristics similar to those of commercially available SPC materials. Subjecting a composite made by the sol-gel route to one thousand load-strip cycles with Cu(2+) shows essentially no loss in metal capacity, and this robustness compares favorably with that observed for the SPC made from amorphous silica gels.

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“…Solid phase hybrid materials are finding an increasingly wide range of applications in device design, environmental monitoring, separations science and catalysis . Amorphous silica gels and sol‐gels combined with polymers define a major portion of these hybrid materials for all these applications . These silica based organic–inorganic materials offer a rigid matrix with high porosity and good thermal stability .…”

Section: Introductionmentioning

confidence: 99%

Investigations on the surface structure and properties of silica‐polyamine composites on the nanoscales and microscales

Abbott

Brooks

Rosenberg

2015

J of Applied Polymer Sci

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The structure and properties of silica polyamine composites (SPC) made from microparticles of amorphous silica gel (300-600 microns) and silica nanoparticles (10-20 nm) modified with aminopropyltrimethoxysilane (APTMS), poly(allylamine) (PAA) or poly(ethyleneimine) (PEI) have been studied. The APTMS nano-hybrids showed batch capacities for copper equal to or better than the corresponding polymer-based micro-hybrids. Loading of the PEI on the nanoparticles was independent of molecular weight of the polymer. Dynamic light scattering measurements showed that the SiO 2 nanoparticles and the composites made from them aggregate in water and the degree of aggregation is dependent on the surface modification. All of the amine-modified materials were catalysts for the Knoevenagel reaction but interestingly, the microparticles modified with APTMS were better catalysts than the corresponding nanoparticles or the polyamine modified composites. Solid-state 19 Si NMR has been used to elucidate the surface structure of the various composites.

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Reaction of the novel Ru3(CO)10[Ph2P(CH2)2Si(OEt3)]2 complex on SBA-15 and MCM-41 mesoporous silicas

Cited by 9 publications

References 19 publications

Reactions of Co2(CO)8 and of Co2(CO)6L (L=3-pentyn-1-ol, 1,4-butyn-diol or 2-methyl-3-butyn-2-ol) with 2(diphenylphosphino)ethyl-trietoxysilane and tris(hydroxymethyl)phosphine for applications to new sol–gel materials

Reactions of Co2(CO)8 and of Co2(CO)6L (L=3-pentyn-1-ol, 1,4-butyn-diol or 2-methyl-3-butyn-2-ol) with 2(diphenylphosphino)ethyl-trietoxysilane and tris(hydroxymethyl)phosphine for applications to new sol–gel materials

Sol–Gel Synthesis and Characterization of Silica Polyamine Composites: Applications to Metal Ion Capture

Investigations on the surface structure and properties of silica‐polyamine composites on the nanoscales and microscales

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