Hydrogenation of furfural over Pd@ZIF-67 derived catalysts: direct hydrogenation and transfer hydrogenation

The −NH2 in UiO‐66‐NH2 was functionally modified with 2‐pyridinecarboxaldehyde to form Schiff base UiO‐66‐Pyr, and hollow nitrogen‐doped porous carbon‐ZrO2 supported Ru (Ru/NC‐ZrO2) was prepared from Ru3+‐coordinated UiO‐66‐Pyr‐Ru. Then the furfural hydrogenation performance of the product was investigated. Compared with single‐tooth‐coordinated UiO‐66‐NH2, the 2‐tooth‐coordinated UiO‐66‐Pyr can improve the stability of Ru3+ coordination and thereby increase the Ru loading and dispersity in the Ru/NC‐ZrO2, showing high furfural hydrogenation activity. The direct hydrogenation with hydrogen as the hydrogen source and the transfer hydrogenation with isopropanol as the hydrogen donor was determined by the furfural hydrogenation of Ru/NC‐ZrO2 under hydrogen or nitrogen.

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“…The XPS of O 1s spectrum was deconvoluted into typical metal‐O (~530.1 eV), C=O (~531.2 eV) and O−H (~532.1 eV) (Figure 5f). [35,36] …”

Section: Resultsmentioning

confidence: 99%

Catalytic Hydrogenation of Furfural over UiO‐66‐NH₂‐derived Ru‐based Catalysts: Precursor Coordination Structure for Enhanced Catalysis

Zhu

Xia

et al. 2023

ChemistrySelect

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“…Dihydroxyacetone and glyceraldehyde are present in tautomerism and expected to produce a smaller amount of glyceraldehyde, which is responsible for the production of carbon monoxide. Glycerol has less tendency of poisoning and deactivation of catalyst surface by transferring carbon monoxide via dehydrogenation of glyceraldehyde. − Glycerol has emerged as a widely investigated and promising option in the field of organic transformation reactions, offering a sustainable and environmentally conscious approach for the production of various valuable substances, including fine chemicals, biomolecules, and pharmaceutical active compounds. − From an economic and sustainable point of view, glycerol has tremendously attracted much attention to replace fossil fuels in various chemical processes. Glycerol, as outlined by the U.S. Department of Energy, is one of the essential 12 building block chemicals derived from biomass-based platform molecules.…”

Section: Various Hydrogen Sources For Cth Reactionsmentioning

confidence: 99%

Nanoarchitectonics of Non-Noble-Metal-Based Heterogeneous Catalysts for Transfer Hydrogenation Reactions: Detailed Insights on Different Hydrogen Sources

Sharma,

Choudhary,

Mittal

et al. 2024

ACS Catal.

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Catalytic transfer hydrogenation (CTH) methodology has drawn profound attention of researchers as an economical and environmentally benign alternate to conventional hydrogenation method. Unlike conventional method, CTH exhibits better reaction efficiency and atom economy, and it makes use of simple, easily accessible, low-cost hydrogen sources. Current research on CTH reactions is oriented toward the development of non-noble-metal-based catalysts due to their high abundance and potential large-scale applicability. In this Review, different organic transformation reactions, such as hydrogenation of nitroarenes, nitriles, alkenes, alkynes, and carbonyl compounds, hydrogenolysis, reductive amination, and reductive formylation reaction using different hydrogen sources have been summarized comprehensively. In addition, synthesis strategies of the non-noble-metal-based heterogeneous catalysts and the structure−activity relationship involving metal−support interaction, single-atom catalysis, and synergistic effect are highlighted. Furthermore, the optimization of the reaction parameters�such as temperature, time, solvents, and additives�for enhancing the catalytic activity and selectivity of the product are discussed in detail. This Review provides detailed insights into the recent progress made in CTH reactions using non-noble-metal-based heterogeneous catalysts with a specific focus on catalyst development, hydrogen sources, and mechanistic exploration.

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“…Commercially, the synthesis of FFA is carried out using a Cu-Cr catalyst [4] ; however, this suffers from environment pollution because of its high toxicity of Cr(VI). [5] Various Cr-free catalysts, including noble (Pt, [6] Pd, [7][8][9] and Ru [10,11] ) and non-noble metal (Cu, [12,13] Ni, [14] and Co [15] ), have been developed for the hydrogenation of FF. Although great progress has been made, how to effectively hydrogenate the C O groups and preserve the C C bonds is still a great challenge in this field.…”

Section: Introductionmentioning

confidence: 99%

Direct and transfer hydrogenation of furfural over MOF‐derived Pd‐Cu@C catalysts

Xia

Gao

et al. 2023

Can J Chem Eng

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Owing to the self‐reducing ability of palladium acetate in solutions, an ethanol solution containing Pd0 particles was prepared and coated in‐situ into copper metal–organic framework (Cu‐MOF), forming Pd@Cu‐MOF in a coated structure. The Pd@Cu‐MOF was reduced under N2 or H2 to form carbon‐coated Pd‐Cu@C. The pyrolysis and carbonization of Cu‐MOF and the reduction of Cu2+ were studied. The Cu‐MOF under either N2 or H2 was pyrolyzed and carbonized, but the Cu2+ reduction mechanisms were different. The high‐temperature carbothermic reduction of Cu2+ under N2 produced Cu0, but during low‐temperature reduction under H2, the reducing H2 reduced Cu2+ to Cu0. Furfural hydrogenation experiments showed that compared with H2, the Pd‐Cu@C prepared under N2 reduction displayed higher furfural hydrogenation activity. The catalytic activity of Pd‐Cu@C prepared from in‐situ Pd0 coating was higher than the Pd/Cu@C prepared from the impregnation method. With i‐propanol as the solvent, the catalytic hydrogenation of furfural under H2 consisted of direct catalytic hydrogenation with molecular hydrogen as the hydrogen source and catalytic transfer hydrogenation with i‐propanol as the hydrogen donor. The catalytic activity of direct catalytic hydrogenation is higher than the catalytic transfer hydrogenation.

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Hydrogenation of furfural over Pd@ZIF-67 derived catalysts: direct hydrogenation and transfer hydrogenation

Abstract: Pd particles coated with ZIF-67 (Pd@ZIF-67) was prepared from the self-reduction of palladium acetate. With isopropanol as the solvent, the furfural hydrogenation reaction performances of Pd@ZIF-67 and ZIF-67 heated at...

Cited by 10 publications

References 49 publications

Catalytic Hydrogenation of Furfural over UiO‐66‐NH₂‐derived Ru‐based Catalysts: Precursor Coordination Structure for Enhanced Catalysis

Catalytic Hydrogenation of Furfural over UiO‐66‐NH₂‐derived Ru‐based Catalysts: Precursor Coordination Structure for Enhanced Catalysis

Nanoarchitectonics of Non-Noble-Metal-Based Heterogeneous Catalysts for Transfer Hydrogenation Reactions: Detailed Insights on Different Hydrogen Sources

Direct and transfer hydrogenation of furfural over MOF‐derived Pd‐Cu@C catalysts

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Hydrogenation of furfural over Pd@ZIF-67 derived catalysts: direct hydrogenation and transfer hydrogenation

Abstract: Pd particles coated with ZIF-67 (Pd@ZIF-67) was prepared from the self-reduction of palladium acetate. With isopropanol as the solvent, the furfural hydrogenation reaction performances of Pd@ZIF-67 and ZIF-67 heated at...

Cited by 10 publications

References 49 publications

Catalytic Hydrogenation of Furfural over UiO‐66‐NH2‐derived Ru‐based Catalysts: Precursor Coordination Structure for Enhanced Catalysis

Catalytic Hydrogenation of Furfural over UiO‐66‐NH2‐derived Ru‐based Catalysts: Precursor Coordination Structure for Enhanced Catalysis

Nanoarchitectonics of Non-Noble-Metal-Based Heterogeneous Catalysts for Transfer Hydrogenation Reactions: Detailed Insights on Different Hydrogen Sources

Direct and transfer hydrogenation of furfural over MOF‐derived Pd‐Cu@C catalysts

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Catalytic Hydrogenation of Furfural over UiO‐66‐NH₂‐derived Ru‐based Catalysts: Precursor Coordination Structure for Enhanced Catalysis

Catalytic Hydrogenation of Furfural over UiO‐66‐NH₂‐derived Ru‐based Catalysts: Precursor Coordination Structure for Enhanced Catalysis