Selective Activation of Alkanes by Gas-Phase Metal Ions

Abstract

Chart 1. Deuterium Labeled 2-Butanols 1a-1f a a Note that all compounds were synthesized in racemic form, while 1d and 1e are diastereoselectively labeled.

Conversion of Methane to Methanol: Nickel, Palladium, and Platinum (d9) Cations as Catalysts for the Oxidation of Methane by Ozone at Room Temperature

“…which has not been studied previously. [22] Our results explain the selective oxidation of methane to methanol by NiO + ; formation of the side products NiOH…”

CH Activation on Aluminum–Vanadium Bimetallic Oxide Cluster Anions

“…Gas-phase clusters have well-defined structures and may have definite active sites that parallel the active sites on the surface of real catalytic systems. Selective activation of C À H bonds by various gas-phase clusters has been extensively studied, and many valuable results have been reported concerning the activations of methane, [4, ethane, [13,34,[37][38][39] propane, [13,34,[37][38][40][41][42] and butane. [13,37,40] However, most of these gas-phase studies were carried out on cationic clusters, [3, 4, 10-11, 14-29, 38-40, 43] and only a few recent studies have focused on anionic clusters.…”

“…Selective activation of C À H bonds by various gas-phase clusters has been extensively studied, and many valuable results have been reported concerning the activations of methane, [4, ethane, [13,34,[37][38][39] propane, [13,34,[37][38][40][41][42] and butane. [13,37,40] However, most of these gas-phase studies were carried out on cationic clusters, [3, 4, 10-11, 14-29, 38-40, 43] and only a few recent studies have focused on anionic clusters. [44][45][46][47] Vanadia supported on alumina (V 2 O 5 /Al 2 O 3 ) has been reported as one of the most active catalytic systems for the selective oxidation of light alkanes and other reactions, and has been widely studied in the condensed phase.…”

Theoretical study on the gas‐phase reaction mechanism between palladium monoxide and methane

“…[5][6][7][8][9][10][11][12][13][14][15] For example, although MnO þ reacts with methane very efficiently, the branching ratio to methanol is less than 1%. [5,8,14] FeO þ efficiently reacts with methane, forming methanol in 41% yield, [6][7][8] whereas its third-row congener OsO þ exclusively dehydrogenates methane to yield an oxo-osmium carbene structure O¼ ¼Os þ ¼ ¼CH 2 . [8] CoO þ exhibits low reactivity toward methane, but the branching ratio to methanol is 100%.…”

“…[8] CoO þ exhibits low reactivity toward methane, but the branching ratio to methanol is 100%. [8,14,16] NiO þ reacts with methane and gives rise to Ni þ and methanol only, [8] whereas its third-row analog PtO þ reacts five times faster with methane to yield the carbene complex PtCH 2 þ and water as predominant products. [8][9][10][11]14] The diatomic MgO þ was reported as the first main group metal-oxide cation to be capable of activating methane.…”