Gas‐Phase Selective Oxidation of Benzyl Alcohol to Benzaldehyde with Molecular Oxygen over Unsupported Nanoporous Gold

Han, Dongqing; Xu, Tingting; Su, Jixin; Xu, Xin; Ding, Yi

doi:10.1002/cctc.201000001

Cited by 57 publications

(47 citation statements)

References 29 publications

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“…4). Similar results were also reported while the NaOH pretreated NPG catalysts were applied for the gas-phase oxidation of benzyl alcohol [40]. Therefore, the enhancement of catalytic activity might be determined by the amounts of OH groups introduced within NPG upon alkaline treatment, which was closely related with the concentration of alkaline solution and immersing time.…”

Section: Resultssupporting

confidence: 75%

Reactivity of the Alkaline Pretreated Nanoporous Gold for the CO Oxidation

et al. 2011

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Nanoporous gold (NPG) catalysts were made by free corrosion and the effect of alkali-treatment on NPG has been investigated for the oxidation of CO. After being immersed in alkaline (NaOH or ammonia) solutions, the catalytic activity could be promoted dramatically while used for the room temperature reaction, and this promotional effect could be adjusted by varying the pH values of the alkaline solutions or immersing time. The roles of the alkaline were to provide OH -anions to form Au-OHsites, which were the active sites to form hydroxyl carbonyl (Au-OCOH -) with CO and activated the oxygen with hydroxyl carbonyl. A probable reaction mechanism was proposed.

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Section: Resultssupporting

confidence: 75%

Reactivity of the Alkaline Pretreated Nanoporous Gold for the CO Oxidation

et al. 2011

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“…92 In 2010, Ding et al also reported that larger alcohols, such as benzyl alcohol, can be selectively oxidized using npAu catalysts and O 2 as the oxidant. 98 The main product was the industrially important benzaldehyde; in all cases, the selectivity of the conversion was above 92%; the conversion started at temperatures slightly above 200°C and already at 240°C, the conversion was close to 60%, showing a remarkable activity (turnover frequency of ∼1.4 s −1 ).…”

Section: Catalysis By Nanoporous Goldmentioning

confidence: 99%

Nanoporous Gold as a Platform for a Building Block Catalyst

2012

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Porous bulk materials are of great interest in catalysis because they can be employed in heterogeneous gas and liquid phase catalysis, electrocatalysis, and in electrocatalytic sensing. Nanoporous gold gained considerable attraction in this context because it is the prime example of a corrosion-derived nanoporous bulk metal. The material was shown to be a very active and selective Au type catalyst for a variety of oxidation reactions. By leveraging the functionalization of the surface of the material with various additives, its catalytic applications can be extended and tuned. In this review, we will summarize recent developments in using nanoporous gold as the platform for the development of high performance catalytic materials by adding metals, metal oxides, and molecular functionalities as building blocks.

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“…Selective oxidation of benzyl alcohol has been investigated in both the vapor and liquid phases [6]. While liquid-phase oxidations are generally carried out below 100°C, vapor phase oxidations with molecular oxygen generally require temperatures above 200°C, the boiling point of benzyl alcohol being 203°C [7].…”

Section: Introductionmentioning

confidence: 99%