Adsorption and reactive desorption of C sub 6 hydrocarbons on Pt/SiO sub 2

Journal Article · Sat Mar 31 23:00:00 EST 1990 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(90)90284-Q· OSTI ID:6219699

Foger, K; Gruber, H L ^[1]

---

1. Innsbruck Univ. (Austria)

C{sub 6} hydrocarbons (n-hexane, 3-methylpentane, methylcyclopentane) were adsorbed on a well-dispersed Pt/SiO{sub 2} catalyst (d{sub Pt} = 2.4 nm) at 298 and 420 K and subsequently desorbed with a stream of hydrogen in the temperature range 298 to 620 K. Seventy-two to eighty percent of desorption occurred at 298 K and the remainder during heating to 470 K. After adsorption at 298 K, >93% of hydrocarbons desorbed unchanged, but after adsorption at 420 K, only methylcyclopentane desorbed largely unchanged, while n-hexane and 3-methylpentane desorbed predominantly as methylcyclopentane. Implications for the mechanisms of nonselective ring opening of methylcyclopentane and cyclic isomerization of C{sub 6} hydrocarbons are discussed.

• OSTI ID: 6219699
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 122:2; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ADSORPTION
ALKANES
CATALYST SUPPORTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL REACTIONS
CYCLOALKANES
DESORPTION
ELEMENTS
HEXANE
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
ISOMERIZATION
MEDIUM TEMPERATURE
METALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
REFORMER PROCESSES
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS