Influence of pH on the preparation of monometallic rhodium and platinum, and bimetallic RhodiumPlatinum Catalysts supported on γ-Alumina

Abstract

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Preparation of highly active AlSBA-15-supported platinum catalyst for thiophene hydrodesulfurization

“…It was reported that Cl − ligands in [PtCl 6 ] 2− exchange with the hydroxyl groups on the alumina surface [25,26]. Furthermore, [PtCl 6 ] 2− is adsorbed irreversibly on the alumina surface by drying at 90 °C [26].…”

Adsorption of Pt(IV) and Pd(II) from Aqueous Solution by Calcined Gibbsite (Aluminum Hydroxide)

“…In recent years, because of environmental and economic concerns, considerable attention is being focused on the research of different types of effective low-cost adsorbents for the recovery of precious metal ions such as charcoal ash, zeolite, sepiolite, and biosorbents [6][7][8][9][10]. The adsorption of Pt (IV) and Pd(II) complexes onto alumina for the preparation of dispersed metal catalysts has been investigated [11][12][13][14][15]. Solution pH and chloride ion concentration influence the adsorption of metal complexes.…”

Sorption of palladium(II), rhodium(III), and platinum(IV) on Fe3O4 nanoparticles

“…The adsorption of Pd(II), Rh(III), and Pt(IV) complexes onto alumina for the purpose of the preparation of dispersed metal catalysts has been investigated [13][14][15][16][17]. It has been suggested that the adsorption of Pd(II), Rh(III), and Pt(IV) onto alumina can take place by the exchange of one chloride ion in the coordination sphere of PtCl 2− 6 , PdCl 2− 4 , and RhCl 3 (H 2 O) 3 complexes in solution with OH − or H 2 O.…”