The direct synthesis of hydrogen peroxide from H₂ and O₂ using Pd–Ga and Pd–In catalysts

Abstract

The direct synthesis of hydrogen peroxide is investigated using PdGa/TiO2 and PdIn/TiO2 catalysts prepared by an acid-washed sol-immobilisation procedure, which allows for enhanced catalytic selectivity.

Dynamic structural changes of supported Pd, PdSn, and PdIn nanoparticles during continuous flow high pressure direct H2O2synthesis

“…Mono-and bimetallic catalysts were synthesized by depositing Pd(M) nanoparticles on TiO 2 (Aeroxide® P25) pretreated with diluted H 2 SO 4 (denoted as s-TiO 2 ) as reported previously 13,14 to obtain Pd/s-TiO 2 (4.5 wt% Pd); PdSn/s-TiO 2 (4.1 wt% Pd and 2.8 wt% Sn); PdIn/s-TiO 2 (3.4 wt% Pd and 1.2 wt% In) catalysts. For convenience, the synthesis procedure is summarized in the ESI.…”

The Direct Synthesis of Hydrogen Peroxide over AuPd Nanoparticles: An Investigation into Metal Loading

“…While Pd-based catalysts have been well reported to offer high activity towards H 2 O 2 production via the direct route [1,3,[10][11][12][13][14], there has been extensive investigation into the alloying of Pd with secondary metals to improve catalytic performance [15][16][17][18][19][20][21][22][23][24]. Indeed, the introduction of Au into supported Pd catalysts has been widely demonstrated to improve catalytic efficacy, with electronic, structural and isolation effects all potential causes for the enhanced performance typically observed in AuPd bi-metallic systems [25][26][27][28].…”

The Selective Oxidation of Cyclohexane via In-situ H2O2 Production Over Supported Pd-based Catalysts

“…In recent years focus has shifted towards alloying Pd with a range of non-precious metals, with numerous studies reporting the enhanced catalytic efficacy achieved through the introduction of Sn [35,36], Ag [37], Zn [38], Ni [39,40], In [41,42], Sb [43], and Te [44] into Pd nanoparticles. Typically, the improved selectivity of the bimetallic catalysts has been attributed to a combination of a reduction of contiguous Pd ensembles and a modification of Pd oxidation state.…”