Selective oxidation of alcohols to high value-added carbonyl compounds using air over Co-Co3O4@NC catalysts

Catalytic Activation of Molecular Oxygen Toward Producing Hydroxyl Radicals Controllably for Highly Selective Oxidation of Hydroxyl Compounds under Mild Conditions

“…The substrate scope for the biomimetic Co–N–C catalyst was extended to a variety of model hydroxyl compounds, including cellulose-derived furan alcohols, lignin-derived aromatic alcohols, and oil-based aromatic alcohols, with excellent yields (84.1–97.4%) of the corresponding acids obtained (Table ). In comparison with the previous studies, ,− the thermal catalytic oxidation of these hydroxyl compounds was usually performed under harsh reaction conditions when employing non-noble metal catalysts for the purpose of acid products. For example, cobalt-based catalysts (Co/GS@C, Co-Co 3 O 4 @NC, Co 3 O 4 , etc.)…”

Atomically dispersed cobalt–nitrogen–carbon catalysts for efficient oxidative esterification of aromatic alcohols

“…4(a), the EPR trapping experiment detected the radical characteristic peaks, which can be assigned to ˙O 2 − radicals. 3 Furthermore, to identify possible intermediates, benzoic acid was used as a substrate. The absence of the methyl benzoate product implies that benzoic acid is not an intermediate under the studied reaction conditions (Table 2, entry 15).…”

“…Aromatic ester derivatives are ubiquitous in fine chemicals, plasticizers, surfactants, pharmaceuticals and food additives, and are commonly synthesized by the reaction of carboxylic acids or activated acid derivatives with alcohols. [1][2][3] However, problems such as a large amount of acidic waste solution and difficulty in product separation will be generated during the above reaction approach. [4][5][6][7][8] As an alternative proposal, the direct oxidative esterification between aromatic alcohols and reaction solvents via molecular oxygen is considered to be the most preferred and promising due to its green, high efficiency and sustainable features.…”

Core-shell structured Co3O4@PPy composite for electrochemical determination of terbutylhydroquinone

“…10,11 Cobalt tetroxide (Co 3 O 4 ) is considered to be the most active metal oxide catalyst with certain advantages, such as special chemical stability, large specic surface area and excellent surface redox performance. 12,13 Exposing redox reaction sites through rational design of the Co 3 O 4 structure is regarded as a high-efficiency strategy to boost its electrochemical sensing performance. Recently, some studies report a promising strategy on enhancing the electrochemical activity of an electrode by coating with a conducting polymer, which can adapt to the structure change and increase the electrode stability.…”