Performance of bimetallic PdRu catalysts supported on gamma alumina for 2-ethylanthraquinone hydrogenation

Abstract

Addition of Ru to Pd/γ-Al2O3 can improve the catalyst's activity and maintain the high selectivity for 2-ethylanthraquinone hydrogenation.

Enhanced catalytic performance of Pd‐Ga bimetallic catalysts for 2‐ethylanthraquinone hydrogenation

“… As shown in Table , all the samples exhibit a mesoporous structure with a pore diameter range of 11.8–12.1 nm. Compared to γ‐Al 2 O 3 , the surface area and the pore volume of the catalysts decrease slightly because of the pore blockage during the catalyst preparation process . The actual metal contents of the catalysts were analyzed by ICP‐AES.…”

“…The peak at 195 °C is related to the reduction of surface PdO x , and the peak at 406 °C is corresponded to the reduction of subsurface PdO x. With increasing Ga loadings, the reduction peak for subsurface PdO x shifts to a higher temperature, which increases to 424 °C when the Ga loading is 1.5 wt%. It has been reported that the strong interaction between Pd and support or the strong interaction between Ga 2 O 3 and Pd can generate a higher reduction temperature of subsurface PdO x, which leads to a smaller Pd particle size and higher Pd dispersion.…”

“…Compared to γ-Al 2 O 3 , the surface area and the pore volume of the catalysts decrease slightly because of the pore blockage during the catalyst preparation process. [14,30] The actual metal contents of the catalysts were analyzed by ICP-AES. The actual loading amounts of Pd and Ga are slightly lower than the theoretical values because of the incomplete adsorption of the metal ions on the support.…”

“…It has been reported that the support with weak alkalinity possessing high electron density improves the electron density of Pd, which facilitates H 2 activation/dissociation and inhibits the formation of by‐products . In addition, numerous studies have been dedicated to improve the catalytic performance of Pd‐based catalysts by adding promoters, such as Ir, Ni, Co, Ru, La and Zn . Nevertheless, due to the limited catalytic performance of Pd catalysts for 2‐ethylanthraquinone hydrogenation, highly active and stable catalytic materials still need to be developed.…”

Catalytic Activity of Bimetallic (Ruthenium/Palladium) Nano‐alloy Decorated Porous Carbons Toward Reduction of Toxic Compounds

“…[32] Such an alloy may reduce the Pd content and further enhance its catalytic activity.I na ddition, the Pd lattice becomes strainedw ith modulated electronic configuration, making more active sites to improve the Pdbased catalytic activity. [33] For instance, some bimetallic catalysts are such as Ru-Cu/biochar, [34] Pd-Ru/g-Al 2 O 3 , [35] RuPd@GO, [36] PdRu/RGO, [37] PdRu/C, [38,39] Ru@2Pd@Ru/C, [40] and Pd x Ru 1Àx /C, [41] which were adopted for both catalytic and electrocatalytic applications, showing as urprisingly superior activity,s tability with respectt ot heir single metal counterparts. It has been demonstrated that Pd catalysts show high catalytic activity for the reduction of Cr VI .R ui sp roved to greatlye nhance the catalytic properties of Pd through the bifunctional and electronic effect, in formica cid (HCOOH; FA)o xidation reaction.…”