An overview of gold-catalysed oxidation processes

Direct aerobic oxidation of primary alcohols to methyl esters catalyzed by a heterogeneous gold catalyst

“…For the past two decades, the use of gold catalysts to facilitate simple aerobic oxidations has received considerable attention [5][6][7][8]. The field was pioneered by Haruta and co-workers who showed that CO can be oxidized into CO 2 by O 2 using Au/Fe 2 O 3 [9,10] and by Hutchings and co-workers who showed that acetylene can be hydrochlorinated using gold catalysts [11].…”

“…The use of air as the oxidant in this transformation is still in its infancy. So far, only the oxidation of ethylene glycol to methyl glycolate has been described [25], and yet plans are already underway for industrializing the process [8].…”

Gold‐Catalyzed Homogeneous Oxidative Cross‐Coupling Reactions

“…The reduction and oxidation processes catalyzed by gold nanoparticles or supported gold have been well studied; [2][3][4] because of their heterogeneous nature, the reaction mechanisms in many cases are not clear, however, in some studies a Au(I)/Au(III) catalytic cycle was either proposed or highly likely to be involved. [5] This catalytic cycle has also been invoked in gold-catalyzed Suzuki and Sonogashira reactions using soluble gold catalysts at rather high reaction temperatures (130 8C), wherein the reaction homogeneity is likely but not vigorously established.…”

Ceria-zirconia supported gold catalysts

“…200 0 C. One can see that Au/CeZrO 4 catalysts present significantly higher activity than that of a commercial copper catalyst, characterized with 50, 90 and 100% CO conversion at 174, 193 and 210 0 C, respectively [10]. [13].…”

“…Such unique properties of ceria-zirconia systems seem to make them ideally suited for an application as supports to gold catalysts. Surprisingly, only a few papers concerning Au/Ce x Zr 1-x O 2 catalysts [7,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], tested mainly in the water-gas shift reaction [9][10][11][12][13][14][15][16] and low-temperature CO oxidation [10,[17][18][19][20][21][22][23] have been published so far. In this paper the most important achievements and conclusions coming from these contributions have been reviewed.…”