Affordable Access

Access to the full text

Influence of the Preparation Method on the Physicochemical and Catalytic Properties of Platinum Catalysts Supported on Bayerite Alumina for the Partial Oxidation Reactions of Hydrocarbons

Authors
  • Shefer, K. I.1, 2
  • Kovtunova, L. M.1, 2
  • Rogozhnikov, V. N.1
  • Stonkus, O. A.1, 2
  • Larina, T. V.1
  • Chetyrin, I. A.1
  • 1 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia , Novosibirsk (Russia)
  • 2 Novosibirsk State University, Novosibirsk, 630090, Russia , Novosibirsk (Russia)
Type
Published Article
Journal
Kinetics and Catalysis
Publisher
Pleiades Publishing
Publication Date
Sep 01, 2020
Volume
61
Issue
5
Pages
801–808
Identifiers
DOI: 10.1134/S0023158420050092
Source
Springer Nature
Keywords
License
Yellow

Abstract

AbstractPlatinum catalysts supported onto bayerite alumina were synthesized and studied. Alumina of the θ-Al2O3 type, which was prepared from metallic aluminum by an aluminate method, was used as a support, and platinum(IV) nitrate and hydrogen hexachloroplatinate(IV) precursors containing Pt4+ ions were used for supporting an active component. The catalysts were studied by physicochemical methods such as X-ray phase analysis, X-ray photoelectron spectroscopy, transmission electron microscopy, and ultraviolet-visible diffuse reflection spectroscopy. It was found that platinum occurred in a finely dispersed state in both of the catalysts, and it was uniformly distributed over the support surface. The particle sizes were 2.8 and 0.9 nm in the samples synthesized from platinum(IV) nitrate and hydrogen hexachloroplatinate(IV), respectively. The most uniform surface distribution, high dispersity, and a narrow particle-size distribution were obtained with the use of hydrogen hexachloroplatinate(IV). The catalysts were tested in the partial oxidation of natural gas. The catalyst synthesized using platinum(IV) nitrate afforded an almost thermodynamically equilibrium distribution of the reaction products of partial oxidation at a temperature of 700–800°С.

Report this publication

Statistics

Seen <100 times