Deuterium tracing studies and microkinetic analysis of ethylene hydrogenation over platinum

Journal Article · Tue Sep 01 04:00:00 EDT 1992 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(92)90148-B· OSTI ID:7007632

Goddard, S A; Cortright, R D; Dumesic, J A ^[1]

---

1. Univ. of Wisconsin, Madison (United States)

Deuterium tracing experiments of ethylene hydrogenation over platinum were conducted at temperatures from 248 to 333 K and D{sub 2}/C{sub 2}H{sub 4} pressure ratios between 50:75 and 150:25 Torr. Information about the rates of adsorption/desorption and hydrogenation processes on the surface was extracted by kinetic analysis of the deuterium tracing data combined with results from steady-state kinetic studies and temperature programmed desorption experiments. This analysis suggests that the essential surface chemistry can be described by a Horiuti-Polanyi mechanism that includes competitive and noncompetitive hydrogen adsorption pathways, each modified by a hydrogen activation step. The importance in these analyses of utilizing data from diverse experimental measurements is illustrated.

• OSTI ID: 7007632
• Journal Information: Journal of Catalysis; (United States), Journal Name: Journal of Catalysis; (United States) Vol. 137:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ADSORPTION
ALKENES
CATALYSIS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DESORPTION
DEUTERIUM
ELEMENTS
ETHYLENE
HETEROGENEOUS CATALYSIS
HYDROCARBONS
HYDROGEN ISOTOPES
HYDROGENATION
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
LIGHT NUCLEI
METALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
PLATINUM
PLATINUM METALS
REACTION KINETICS
SORPTION
STABLE ISOTOPES
TRACER TECHNIQUES
TRANSITION ELEMENTS