X-ray photoelectron spectroscopy and Auger electron spectroscopy analyses of an Sn-5at.%Sb mixed oxide catalyst showed that activation leads to an increase in concentration of antimony on its surface. This surface segregation is induced by the presence of oxygen in the gas phase. The active catalyst probably contains both antimony(V) and antimony(III) in addition to antimony(V) in solid solution with SnO2. © 1986.

Balasubramanian Viswanathan

S. Chokkalingam

Thirukkallam Kanthadai Varadarajan

OLEFINS - OXIDATION

OXIDES - SPECTROSCOPIC ANALYSIS

Spectroscopy, Auger Electron

Spectroscopy, X-ray

Activation

AMMOXIDATION

MIXED OXIDE CATALYST

Surface segregation

X-ray photoelectron spectroscopy

CATALYSTS

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Characterization of Sn-5at.%Sb mixed oxide catalyst studied by x-ray photoelectron spectroscopy and Auger electron spectroscopy

Surface and Coatings Technology

From studies of the oxidative dehydrogenation of isopropyl alcohol on various compositions of mixed tin and antimony oxide catalysts, it is concluded that this mixed oxide system predominantly functions as Sb2O4 which is formed as a two-dimensional layer on the tin oxide matrix. At low concentrations of antimony and at low temperatures the solid solution-antimony oxide interface may be responsible for the observed activity. The participation of lattice oxygen in the process is also deduced. © 1984.

Surface Technology

Oxidative dehydrogenation of isopropyl alcohol on mixed tin and antimony oxide catalysts

The characteristics of selective oxidation on mixed tin and antimony oxide catalysts with special reference to the solubility limit, the role of the matrix, the nature of the active sites and the role of acid-base sites are evaluated from an analysis of data reported in the literature. The catalytic properties of these systems are also briefly reviewed. © 1984.

Some reflections on mixed tin and antimony oxide catalysts

Surface Science

Surface properties of antimony doped tin(IV) oxide: A study by electron spectroscopy

Journal of Catalysis

A M�ssbauer investigation of the formation and surface composition of tin-antimony oxide catalysts

Advances in Catalysis

Tin-Antimony Oxide Catalysts

Journal	Surface and Coatings Technology
ISSN	02578972
Open Access	No