Diatomite-supported Pd–M (M = Cu, Co, Ni) bimetal nanocatalysts for selective hydrogenation of long-chain aliphatic esters

Heterogeneous and homogeneous catalysis for the hydrogenation of carboxylic acid derivatives: history, advances and future directions

“…For example, bimetallic Pd-M (M = Cu, Co, Ni) catalysts supported on diatomite show the highest catalytic activity when Pd is promoted by Cu. 90 A 1% wt Pd-Cu (3 : 1)/diatomite catalyst tested in hydrogenation of methyl palmitate, stearate and laurate was very active and allowed a methyl palmitate conversion of 98% with 84% selectivity to 1-hexadecanol ( Table 1). The transesterification product, palmityl palmitate, was also formed along with n-hexadecane resulting from the dehydration of 1-hexadecanol.…”

Selective Hydrogenation of Dodecanoic Acid to Dodecane-1-ol Catalyzed by Supported Bimetallic Ni-Sn Alloy

“…In previously published studies, several bimetallic alloy transition metal catalysts (e.g. Pd-M (M = Cu, Co, Ni) [10], Pd-Nb2O5 [11], RuSn [12] Rh-Sn [13], and Ru-Ge-B [14] have shown superior performance for the selective hydrogenation of fatty acids compared with their single metal counterpart. Huang et al [10] reported the catalytic performances of supported bimetallic Pd-M (M = Cu, Co, Ni) catalysts in hydrogenation of methyl palmitic in nheptane solvent at 270 o C, H2 55 bar within 7 h. Among these bimetallic catalysts, PdCu/diatomite with loading amount of 1 % (Pd/Cu = 3) displayed the highest catalytic performances in hydrogenation of palmitic acid (99 % conversion) giving 1-hexadecanol (83 % yield) [10].…”

Synthesis of carbon-supported Pd–Co bimetallic catalysts templated by Co nanoparticles using the galvanic replacement method for selective hydrogenation

“…[1][2][3][4][5][6] Ligand and ensemble effects in bimetallic catalysts have been reported to dramatically enhance their catalytic activity and selectivity. [7][8][9] These effects depend on the composition, size, morphology and structure of the bimetallic species, [10][11][12] and therefore control of these properties is important in the design of heterogeneous catalysts for specic reactions. Bimetallic nanostructures are generally categorized by alloy structure, heterostructure, and core-shell structure, and different nanostructures have been reported to show unique catalytic performance.…”