Boosting CO2 Conversion with Terminal Alkynes by Molecular Architecture of Graphene Oxide-Supported Ag Nanoparticles

Abstract

Carboxylation of terminal alkynes with CO 2 via direct C-H bond activation is a highly appealing way to capture and convert CO 2 but faces great challenges and difficulty. Here, we report an efficient catalyst that is prepared simply through introduction of p-tert-butylaniline into graphite oxide powders followed by localized growth of Ag nanoparticles (NPs). The bulky nature of p-tert-butylaniline facilitates the powder exfoliation, giving rise to mass production of uniform modified graphene oxide (tert-GO) nanosheets of 4 nm in thickness. Notably, Ag/tert-GO shows excellent catalytic activity for converting alkynes regardless of containing electron-donating or electron-withdrawing groups under mild reaction conditions. The synergy of the amide linkages on tert-GO nanosheets and the supported small-sized Ag NPs is recognized as the vital role in promoting adsorption of CO 2 and subsequent conversion.

Pd‐Nanocomposites Formed by Calcination of [Pd(2‐pymo)2]n Framework as Catalysts of Phenylacetylene Semihydrogenation in Water

“…[8] Catalytic transformations of terminal alkynes are intensively studied due to their technological importance. [22,23] Semihydrogenation of phenylacetylene to styrene is an important process in the olefin industry because phenylacetylene can inhibit styrene polymerization. [24] Therefore the concentration of phenylacetylene should be reduced to < 10 ppm.…”

Recent advances in catalytic conversion of carbon dioxide to propiolic acids over coinage-metal-based catalysts

“…The synthesis of most catalysts is time-consuming and expensive, which hinders their industrial application. In order to solve the problem mentioned above, Tang and his colleagues developed an efficient catalyst Ag/tert-GO according to the molecular steric effect [98]. Tert-GO nanosheets can be prepared by condensation of p-tert-butylaniline with carboxyl groups exposed on the edge or plane of graphite oxide.…”

Epsilon Cobalt Nanoparticles as Highly Performant Catalysts in Cinnamaldehyde Selective Hydrogenation

“…Ligand influence on the performances of NP-based catalysts is multifaceted and controversial. [19][20][21][22][23] Thus, the study of the influence of the structural characteristics of colloidal NPs on their catalytic properties is always hampered by the presence of ligands.…”

“…NPs of the same material but adopting different structures (phase, shape) are generally stabilized by different ligands, and ligand elimination is in general accompanied by modification of the features of NPs. The influence of the ligands on the performances of NP-based catalysts is multifaceted and controversial. − Thus, the study of the influence of the structural characteristics of colloidal NPs on their catalytic properties is always hampered by the presence of ligands.…”