Organosilanesulfonic acid-functionalized Zr-TMS catalysts: Synthesis, characterization and catalytic applications in condensation reactions

Chidambaram, Mandan; Venkatesan, C.; Singh, Anand

doi:10.1016/j.apcata.2006.05.024

Cited by 13 publications

(7 citation statements)

References 20 publications

(26 reference statements)

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“…In addition, the band at 1450 cm −1 can be assigned to the C-CH 2 -C vibrational mode, the band at 650 cm −1 relates to the C-S stretching mode vibrations, and the presence of bands at 1250 and 1300 cm −1 is attributed to CH 2 -S and CH 2 -Si wagging mode vibrations [20,21]. All these results confirm the integrity of the propyl chain sulfonic acid groups within the support samples.…”

Section: Ftirsupporting

confidence: 69%

Selective Preparation of Furfural from Xylose over Sulfonic Acid Functionalized Mesoporous Sba-15 Materials

Shi

et al. 2011

Energies

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Sulfonic acid functionalized mesoporous SBA-15 materials were prepared using the co-condensation and grafting methods, respectively, and their catalytic performance in the dehydration of xylose to furfural was examined. SBA-15-SO 3 H(C) prepared by the co-condensation method showed 92-95% xylose conversion and 74% furfural selectivity, and 68-70% furfural yield under the given reaction conditions. The deactivation and regeneration of the SBA-15-SO 3 H(C) catalyst for the dehydration of xylose was also investigated. The results indicate that the used and regeneration catalysts retained the SBA-15 mesoporous structure, and the S content of SBA-15-SO 3 H(C) almost did not change. The deactivation of the catalysts is proposed to be associated with the accumulation of byproducts, which is caused by the loss reaction of furfural. After regeneration by H 2 O 2 , the catalytic activity of the catalyst almost recovered.

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Section: Ftirsupporting

confidence: 69%

Selective Preparation of Furfural from Xylose over Sulfonic Acid Functionalized Mesoporous Sba-15 Materials

Shi

et al. 2011

Energies

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“…When Si ions in the Si-MCM-41 framework are partially substituted by other ions, such as Al 3+ , Fe 3+ , Ti 4+ , Ga 3+ and V 5+ , a variety of frameworkmodified mesoporous materials with larger surface, modified thermal stability and enhanced surface acidity may be obtained [8][9][10][11][12][13][14][15]. Because of the importance of Zr-based nanomaterials in acid-catalyzed reactions [16][17][18][19], it has been our interest to use zirconium ions to partially replace Si ions in the Si-MCM-41 framework, in order to obtain Zr-containing mesostructured solids. Usually, the zirconium ions in mesostructured materials can be accessible to reactants because the majority of them are located on the surface of the pore walls, due to their trend to adopt high coordination numbers [20,21].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and physicochemical properties of Zr-MCM-41 mesoporous molecular sieves and Pt/H3PW12O40/Zr-MCM-41 catalysts

Chen

Wang

Noreña

et al. 2007

Journal of Solid State Chemistry

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“…In a heterogeneous system, the support is expected to increase the active surface area, stability and environmental acceptability of the supported catalysts . Various kinds of supports have been reported, including alumina (Chary et al, 2003), modified polystyrene (Gupta & Sutar, 2008b), zeolites (Chidambaram et al, 2006), silica (SalavatiNiasari et al, 2007b) and montmorillonite (Cao et al, 2014;Kameyama et al, 2006;Li et al, 2013). Among these, montmorillonite, has been extensively investigated in recent years due to its large effective surface area, economic feasibility and low toxicity (Kianfar et al, 2014a).…”

Section: Introductionmentioning

confidence: 97%

Carbonylation of cyclohexene to 2-cyclohexene-1-one by montmorillonite-supported Co(II) catalysts

2015

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A novel environmentally-friendly catalytic system for the carbonylation of cyclohexene with molecular oxygen under conditions of mild temperature, and under an atmospheric oxygen pressure is presented. In this system, a series of readily-prepared cobalt complexes of 2-aminophenol and its derivatives immobilised onto montmorillonite were used as catalysts. The catalysts were characterised by FT-IR, elemental analysis, thermogravimetric analysis, powder X-ray diffraction, diffuse reflectance ultraviolet visible spectra, scanning electron microscopic measurements, transmission electron microscopic measurements and the Brunauer-Emmett-Teller method. The effects of various reaction conditions such as catalyst dosage, temperature and time were optimised, obtaining an 88.7 % conversion with 72.0 % selectivity of 2-cyclohexene-1-one in 6 h. The results show that the catalytic activity of the cobalt complexes encapsulated in montmorillonite is higher than those of the free complexes. In addition, the heterogeneous catalysts were stable and can be recycled up to five times without any noticeable change in the catalytic activity.

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Organosilanesulfonic acid-functionalized Zr-TMS catalysts: Synthesis, characterization and catalytic applications in condensation reactions

Cited by 13 publications

References 20 publications

Selective Preparation of Furfural from Xylose over Sulfonic Acid Functionalized Mesoporous Sba-15 Materials

Selective Preparation of Furfural from Xylose over Sulfonic Acid Functionalized Mesoporous Sba-15 Materials

Synthesis and physicochemical properties of Zr-MCM-41 mesoporous molecular sieves and Pt/H3PW12O40/Zr-MCM-41 catalysts

Carbonylation of cyclohexene to 2-cyclohexene-1-one by montmorillonite-supported Co(II) catalysts

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