β-diketone functionalized SBA-15 and SBA-16 for rapid liquid–solid extraction of copper

Ouargli, R.; Hamacha, Rachida; Benharrats, Nassira; Boos, Anne; Bengueddach, Abdelkader

doi:10.1007/s10934-015-9921-0

Cited by 17 publications

(4 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The strong peak observed at 2θ = 0.9° is the characteristic peak of SBA-15, which is assigned to the (100) diffraction peak. The characteristic diffraction peak indicates that the typical two-dimensional hexagonal symmetry of SBA-15 was present in the SBA-15-Biimidazole-Ru catalyst, suggesting that the mesoporous structure of the catalysts remained without change after the modification, which is consistent with the TEM result. In addition, there was no other peak present in the high-angle XRD patterns with 2θ = 10–80° of the prepared catalyst, which suggested that no crystalline Ru species were observed in the catalyst.…”

Section: Resultssupporting

confidence: 83%

Catalytic Conversion of Fructose and 5-Hydroxymethylfurfural into 2,5-Diformylfuran over SBA-15 Supported Ruthenium Catalysts

et al. 2016

View full text Add to dashboard Cite

In this study, the mesporous SBA-15 was prepared and used to graft biimidazole groups, which were used to anchor Ru 3+ to give rise to a new ruthenium catalyst (SBA-15-Biimidazole-Ru). The structure of the SBA-15-Biimidazole-Ru catalyst was well characterized and used for the aerobic oxidation of 5-hydroxymethylfurfural (HMF) into 2,5-diformylfuran (DFF). Several important parameters were studied and found that the reaction solvent and oxygen pressure showed a crucial role in the activity of the as-prepared SBA-15-Biimidazole-Ru catalyst. HMF conversion of 96.9% and DFF yield of 88.7% were achieved after 11 h at 110 °C under 15 bar oxygen pressure. One important characteristic of the SBA-15-Biimidazole-Ru catalyst is that it was very stable without loss of its catalytic activity during the recycling experiments, which was due to the strong interaction between the Ru 3+ and the Biimidazole groups on the surface of SBA-15. Finally, the direct conversion of fructose into DFF was also performed by the use of Amberlyst 15 and SBA-15-Biimidazole-Ru as two binary catalysts. The dehydration of fructose over Amberlyst 15 catalyst and the subsequent oxidation of HMF over SBA-15-Biimidazole-Ru catalyst afforded DFF with an overall yield of 72.4%.

show abstract

Section: Resultssupporting

confidence: 83%

Catalytic Conversion of Fructose and 5-Hydroxymethylfurfural into 2,5-Diformylfuran over SBA-15 Supported Ruthenium Catalysts

et al. 2016

View full text Add to dashboard Cite

show abstract

“…This higher porosity of SBA-15 mainly arises from its thinner pore wall (3.1 nm) as compared to that of SBA-16 (8.0 nm). The much weaker mass loss noticed beyond 150 °C up to 700 °C was attributed to dehydroxylation [1].…”

Section: Thermal Behavior and Changes In Hydrophilic Charactermentioning

confidence: 95%

“…In a first step, SBA-like silicas were prepared according to a previously reported procedure [1] by hydrothermal synthesis method in the following gels compositions: i. for SBA-15:…”

Section: Sba-like Silica Preparationmentioning

confidence: 99%

“…So far, the synthesis of ordered mesoporous materials of SBA-15 and SBA-16 is often justified by their beneficial adsorptive and catalytic properties for numerous purposes [1,2] and more particularly for environmental applications [3,4]. Their respective bi-dimensional hexagonal (P6mm) and tri-dimensional cubic symmetry (Im3m) [5,6] confer them organized and regular porosity with high specific surface area and large mesopores.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of copper dispersion on SBA-15 and SBA-16 affinity towards carbon dioxide—an approach through thermal programmed desorption

et al. 2021

View full text Add to dashboard Cite

A new approach for the synthesis of zero-valent copper nanoparticles (CuNP) supported on ordered mesoporous silica SBA-15 and SBA-16 by using vegetal antioxidants, coffee Robusta and green tea was developed in the present work. Diverse characterization techniques such as X-ray diffraction, nitrogen adsorption-desorption, transmission electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, and thermal programmed desorption of CO2 and water allowed stating that the appreciable specific surface area and porosity favored CuNP formation.Copper-loaded SBA-15 and SBA-16 exhibited higher surface basicity and hydrophilic character according to the type of the source of reducing agents and silica framework, respectively. OHcompounds interactions with both CuNP and SBA surface and more particularly with available Si-O-Si groups were found to promote metal dispersion reducing the particle size. The results obtained herein open promising prospects for designing low cost and "green" silica-based materials with judiciously tailored basicity and hydrophilic character for catalysis, adsorption and other surface processes.

show abstract

Al-Rich Ordered Mesoporous Silica SBA-15 Materials: Synthesis, Surface Characterization and Acid Properties

et al. 2017

View full text Add to dashboard Cite

β-diketone functionalized SBA-15 and SBA-16 for rapid liquid–solid extraction of copper

Cited by 17 publications

References 61 publications

Catalytic Conversion of Fructose and 5-Hydroxymethylfurfural into 2,5-Diformylfuran over SBA-15 Supported Ruthenium Catalysts

Catalytic Conversion of Fructose and 5-Hydroxymethylfurfural into 2,5-Diformylfuran over SBA-15 Supported Ruthenium Catalysts

Effect of copper dispersion on SBA-15 and SBA-16 affinity towards carbon dioxide—an approach through thermal programmed desorption

Al-Rich Ordered Mesoporous Silica SBA-15 Materials: Synthesis, Surface Characterization and Acid Properties

Contact Info

Product

Resources

About