Zirconium triflate grafted on SBA-15 as a highly efficient solid acid catalyst for ring opening of epoxides by amines and alcohols

Tayade, Kamlesh N.; 王连月,; 尚森森,; 戴文,; Mishra, Manish; 高爽,

doi:10.1016/s1872-2067(17)62794-3

Cited by 14 publications

(6 citation statements)

References 40 publications

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“…The textural and structural properties of all the prepared MSC (CZA and CZA-hydrothermal) and MDC (Al and Zr were incorporated into SBA-15 at different ratios (Al/Zr = ∞, 3, 1.0.3, 0)) catalysts are shown in Table 1. According to IUPAC classification, the typical type IV adsorption–desorption isotherm with a clear H1 type hysteresis loop is observed for all MDC catalysts, which is one of the main characteristics of mesoporous materials, 59,60 and the same can be interpreted from the pore size distribution curve (Fig. S2†) from which the homogeneity of pore size distribution can be concluded.…”

Section: Resultsmentioning

confidence: 79%

“…For the used CZA/Al-ZrĲ1 : 1)-SBA-15 1. According to IUPAC classification, the typical type IV adsorption-desorption isotherm with a clear H1 type hysteresis loop is observed for all MDC catalysts, which is one of the main characteristics of mesoporous materials, 59,60 and the same can be interpreted from the pore size distribution curve (Fig. S2 †) from which the homogeneity of pore size distribution can be concluded.…”

Section: And (200) Reflectionsmentioning

confidence: 74%

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Direct synthesis of dimethyl ether from CO₂ hydrogenation over a highly active, selective and stable catalyst containing Cu–ZnO–Al₂O₃/Al–Zr(1 : 1)-SBA-15

Mondal

Yadav

2022

React. Chem. Eng.

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Section: Resultsmentioning

confidence: 79%

Section: And (200) Reflectionsmentioning

confidence: 74%

Direct synthesis of dimethyl ether from CO₂ hydrogenation over a highly active, selective and stable catalyst containing Cu–ZnO–Al₂O₃/Al–Zr(1 : 1)-SBA-15

Mondal

Yadav

2022

React. Chem. Eng.

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“…Additional references cited within the Supporting Information. [25,27,[37][38][39][40][44][45][46][47][48][49]…”

Section: Supporting Informationmentioning

confidence: 99%

Lewis Acid‐Catalyzed Ring‐Opening Alcoholysis of Cyclohexene Oxide: The Role of Open Metal Sites in the Bi(III)‐based Metal‐Organic Framework SU‐101

Obeso

Flores

et al. 2023

ChemCatChem

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SU‐101 was screened for the acid‐catalyzed ring‐opening alcoholysis of cyclohexene oxide. Results indicated access to open metal sites within SU‐101, a fundamental requirement (Lewis acid Bi+3 sites) for this reaction. In addition, SU‐101 exhibited high chemical stability, demonstrated by retaining its crystalline structure after the reaction. The cyclohexene conversion was estimated to be 99.8, 96.8, and 14.3 % at 40 °C for methanol, ethanol, and propanol, respectively. Also, SU‐101 demonstrated an outstanding catalytic cyclability performance for five cycles without losing catalytic activity.

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“…The presence of bands at 1450 cm À 1 and 1610 cm À 1 indicates that pyridine binds to the Lewis (L) acidic sites, while a band at 1490 cm À 1 is indicative of binding to both the B and L acid (B + L) sites. [71,72]…”

Section: Catalystmentioning

confidence: 99%

Micro‐Mesoporous Hierarchical Beta Zeolite and its Catalytic Application in Acetic Acid Benzylation

Koshti,

Bandyopadhyay,

Bandyopadhyay

2023

ChemistrySelect

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Hierarchical Beta zeolite with tailor‐made pore structure is prepared by post‐synthetic alkali (NaOH) treatment. XRD, FE‐SEM, ICP‐OES, 27Al & 29Si MAS NMR, and N2 sorption isotherms were used to explore the structural transformation of these materials. ICP‐OES analysis showed post‐synthetic base treatment resulting into tuning of the Si/Al ratio, thereby increasing the acidity of the sample. The acidic properties of materials were measured using acid‐base titration, Pyridine FTIR spectroscopy, and NH3‐TPD. Conversion of acetic acid to benzyl acetate by reacting with benzyl alcohol was studied using hierarchical and parent sample. The reaction was evaluated with theoretical and experimental approaches. Under optimum reaction conditions, desilicated Beta zeolite showed 93 % acetic acid conversion and 90 % benzyl acetate selectivity, as confirmed by GC and GC‐MS analyses. Theoretical analysis indicated direct relationship between rate constant and rising reaction temperature, in accordance with the principles of first‐order reaction kinetics (R2>0.95). The activation energy for acetic acid benzylation over Beta‐0.1 M NaOH was found to be 10.21 kJ mol−1, considerably lower value compared to previous reports.

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Zirconium triflate grafted on SBA-15 as a highly efficient solid acid catalyst for ring opening of epoxides by amines and alcohols

Cited by 14 publications

References 40 publications

Direct synthesis of dimethyl ether from CO₂ hydrogenation over a highly active, selective and stable catalyst containing Cu–ZnO–Al₂O₃/Al–Zr(1 : 1)-SBA-15

Direct synthesis of dimethyl ether from CO₂ hydrogenation over a highly active, selective and stable catalyst containing Cu–ZnO–Al₂O₃/Al–Zr(1 : 1)-SBA-15

Lewis Acid‐Catalyzed Ring‐Opening Alcoholysis of Cyclohexene Oxide: The Role of Open Metal Sites in the Bi(III)‐based Metal‐Organic Framework SU‐101

Micro‐Mesoporous Hierarchical Beta Zeolite and its Catalytic Application in Acetic Acid Benzylation

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Zirconium triflate grafted on SBA-15 as a highly efficient solid acid catalyst for ring opening of epoxides by amines and alcohols

Cited by 14 publications

References 40 publications

Direct synthesis of dimethyl ether from CO2 hydrogenation over a highly active, selective and stable catalyst containing Cu–ZnO–Al2O3/Al–Zr(1 : 1)-SBA-15

Direct synthesis of dimethyl ether from CO2 hydrogenation over a highly active, selective and stable catalyst containing Cu–ZnO–Al2O3/Al–Zr(1 : 1)-SBA-15

Lewis Acid‐Catalyzed Ring‐Opening Alcoholysis of Cyclohexene Oxide: The Role of Open Metal Sites in the Bi(III)‐based Metal‐Organic Framework SU‐101

Micro‐Mesoporous Hierarchical Beta Zeolite and its Catalytic Application in Acetic Acid Benzylation

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Direct synthesis of dimethyl ether from CO₂ hydrogenation over a highly active, selective and stable catalyst containing Cu–ZnO–Al₂O₃/Al–Zr(1 : 1)-SBA-15

Direct synthesis of dimethyl ether from CO₂ hydrogenation over a highly active, selective and stable catalyst containing Cu–ZnO–Al₂O₃/Al–Zr(1 : 1)-SBA-15