Pd‐Imidate@Sba‐15: A Multifunctional Heterogeneous Catalyst for the Aqueous Room Temperature Hydrogenation of Co2 to Formic Acid

The incorporation of hydrophilic and basic sites from phosphotriazaadamantane and saccharine in a water‐soluble Pd complex and the subsequent confinement into mesoporous silica support increases the activity and stability of the palladium catalytic species for the room‐temperature aqueous hydrogenat...

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Bibliographic Details
Published in:ChemSusChem Vol. 18; no. 1; pp. e202401192 - n/a
Main Authors: Martín, Nuria, Porcar, Raúl, Serrano, José L., Pérez, José, Lozano, Pedro, Cirujano, Francisco G., García‐Verdugo, Eduardo
Format: Journal Article
Language:English
Published: Weinheim Wiley Subscription Services, Inc 02.01.2025
John Wiley and Sons Inc
Subjects:
Bicarbonates
Carbon dioxide
Catalysts
CO2activation
Formic acid
Heterogeneous catalysis
Hydrogenation
Mesoporous silica
Palladium
Room temperature
Silicon dioxide
ISSN:1864-5631, 1864-564X, 1864-564X
Online Access:Get full text
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Summary:The incorporation of hydrophilic and basic sites from phosphotriazaadamantane and saccharine in a water‐soluble Pd complex and the subsequent confinement into mesoporous silica support increases the activity and stability of the palladium catalytic species for the room‐temperature aqueous hydrogenation of either bicarbonate or CO2 into formic acid. The use of low Pd loadings (<0.1 mmolPd g−1) of the well‐dispersed complex on SBA‐15 mesoporous silica allows performing the reaction under room temperature, and aqueous conditions, exhibiting TON of ca. 40–100, for the CO2 or bicarbonate hydrogenation, respectively, which is one order of magnitude higher than the homogeneous case, allowing the easy isolation and recycling of the solid catalyst. A palladium complex, having phosphotriazaadamantane and saccharine ligands, has been confined at the unidirectional mesoporous channels of the SBA‐15 mesoporous silica, allowing the direct conversion of CO2 into formic acid under room temperature additive‐free aqueous conditions, exhibiting TONs one order of magnitude higher than the homogeneous catalyst, allowing the easy isolation and recycling of the solid catalyst.
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ISSN:1864-5631
1864-564X
1864-564X
DOI:10.1002/cssc.202401192