Ethylene adsorption and decomposition on (2 times 1) Pt(110)

Journal Article · Thu Feb 08 04:00:00 EST 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100366a008· OSTI ID:7170580

Yagasaki, E; Backman, A L; Masel, R I ^[1]

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1. Univ. of Illinois, Urbana (USA)

The adsorption and decomposition of ethylene on the (2{times}1) Pt(110) surface is examined with TPD and EELS. It is found that ethylene adsorption on (2{times}1) Pt(110) shows unique properties and is not simply a combination of the chemistry seen on the closed packed faces of platinum. The ethylene adsorbs molecularly on (2{times}1) Pt(110) to yield a mixture of di-{sigma} and {pi}-bound ethylene. Some of the adsorbed ethylene desorbs upon heating, some reacts to form ethane, and some decomposes to yield a mixture of ethylidyne ({eta}{sub 3} {triple bond}C-CH{sub 3}), ethan-1-y1-2-ylidyne ({eta}{sub 4} {triple bond}CCCH{sub 2}{sup {minus}}), and hydrogen. Additional hydrogen is liberated upon further heating, to produce a mixture of C{sub 2} species ((-C{triple bond}C-){sub x}), methylidyne ({eta}{sub 3} {triple bond}CCH), multiply bound CCH complexes, and adsorbed carbon. The chemistry on (2{times}1) Pt(110) is different than that occurring on other faces of platinum, which provides further evidence that the mechanism of ethylene decomposition on platinum is controlled by the symmetry of the platinum surface.

• OSTI ID: 7170580
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:3; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ALKENES
CALCULATION METHODS
CHEMICAL REACTIONS
CRYSTALS
DATA ANALYSIS
DECOMPOSITION
ELEMENTS
ETHYLENE
HYDROCARBONS
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
ORGANIC COMPOUNDS
PLATINUM
PLATINUM METALS
SORPTION
SURFACE PROPERTIES
TRANSITION ELEMENTS