Unraveling the Role of Site Isolation and Support for Semihydrogenation of Phenylacetylene

Abstract

Intermetallic compounds (IMCs)composed of transition metals and post-transition metals function as superior heterogeneousc atalysts in comparison to their monometallic and bimetallic alloy counterparts. Rendering IMCs in their nanomaterial iterations further enhances their efficiency. Herein, we demonstrate the role of PdIn as well-dispersed intermetallic nanoparticles (IMNPs) for the semihydrogenation of phenylacetylene selectively to styrene at ambient conditions. Higher selectivity of PdIn wase xplained with the help DOS calculations. We have explored the role of af ew well-known silica-based supports such as SBA-15 and MCM-41, providing insight into how they affect catalysis. As an additional support we have explored previously reportedJ NC-1, am esoporousc arbon material obtained via at emplated strategyu sing SBA-15. PdIn supported on SBA-15 and JNC-1 displayed the best dispersion, while also exhibiting the most catalytic activity due to the unique nature of the porous structure.

Intermetallic PdCu3 supported on nanodiamond–graphene for semi-hydrogenation of Phenylacetylene

“…26,27 This strategy effectively inhibits the formation of β-H species and alters adsorption configurations, ultimately leading to enhanced selectivity. [28][29][30][31] Additionally, catalyst support engineering provides another route for enhancing selectivity. For instance, using nitrogen-containing carbons or polymers as support effectively restrains the overhydrogenation of monometallic Pd.…”

Recent research advances on catalysts for selective hydrogenation of ethyne

“…Industrially, several approaches have been utilized to remove the trace amount of ethyne from ethylene, including the solvent absorption method, copper precipitation method, low-temperature refining method, and selective hydrogenation method. 9,10 Among these methods, the selective hydrogenation method is of great potential due to its advantages, including simple processing, low energy consumption, less environmental pollution, less ethylene loss, and large treatment capacity. 11,12 For these reasons, the selective hydrogenation method is preferably adopted in large and medium-sized ethylene plants.…”