Publication

Promotion of Rh catalyst interfaced with TiO2

Christos Comninellis, György Foti
2004
Journal Articles

Abstract

The catalytic activity of Rh for the partial oxidn. of methane to syngas can be markedly affected by interfacing polycryst. Rh films with a dispersed TiO2 interlayer deposited on YSZ. High CO selectivity (near 97%) can be reached in wide range of CH4:O2 ratio at 550 Deg. The obsd. modification of catalytic activity and selectivity towards CO and H2 prodn. over Rh interfaced with interlayer of TiO2 is related to the lowered stability of surface Rh oxide against redn. to metallic Rh. The phenomenon may be interpreted either by electronic type strong metal-support interactions or by self-driven wireless electrochem. promotion mechanism. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/38a2f060-fdd9-41e5-af3b-b2049bb8b80d

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Christos Comninellis, György Foti
2004
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/38a2f060-fdd9-41e5-af3b-b2049bb8b80d

About this result

Related concepts (14)

Transition metal

In chemistry, a transition metal (or transition element) is a chemical element in the d-block of the periodic table (groups 3 to 12), though the elements of group 12 (and less often group 3) are sometimes excluded. The lanthanide and actinide elements (the f-block) are called inner transition metals and are sometimes considered to be transition metals as well. Since they are metals, they are lustrous and have good electrical and thermal conductivity.

Platinum group

The platinum-group metals (abbreviated as the PGMs; alternatively, the platinoids, platinides, platidises, platinum group, platinum metals, platinum family or platinum-group elements (PGEs)) are six noble, precious metallic elements clustered together in the periodic table. These elements are all transition metals in the d-block (groups 8, 9, and 10, periods 5 and 6). The six platinum-group metals are ruthenium, rhodium, palladium, osmium, iridium, and platinum.

Rhodium

Rhodium is a chemical element with the symbol Rh and atomic number 45. It is a very rare, silvery-white, hard, corrosion-resistant transition metal. It is a noble metal and a member of the platinum group. It has only one naturally occurring isotope: 103Rh. Naturally occurring rhodium is usually found as a free metal or as an alloy with similar metals and rarely as a chemical compound in minerals such as bowieite and rhodplumsite. It is one of the rarest and most valuable precious metals.

Related publications (3)

Promotion of Rh catalyst interfaced with TiO2

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