Effect of dilution on 2-methylpentane cracking over HY zeolite

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1006/jcat.1993.1226· OSTI ID:5517083

Zhao, Y; Wojciechowski, B W ^[1]

---

1. Queen's Univ., Kingston, Ontario (Canada)

The effect of dilution by N[sub 2] on 2-methylpentane cracking on USHY has been investigated. The results show that dilution inhibits the propagation of certain chain reactions, leading to the shortening of the kinetic chain length and a decrease in the overall rate of feed conversion. Furthermore, the total molar selectivity of products increases, resulting in an increased volume expansion. Both the paraffin to olefin ratio and the isomerization to cracking selectivity ratio decrease with increase in the dilution ratio. A quantitative description of the variations of all kinetic parameters, of the reaction pathway probabilities, and of the product formation probabilities with the dilution ratio is presented and the observed behaviour is discussed in terms of the chemistry involved. 26 refs., 12 figs., 6 tabs.

• OSTI ID: 5517083
• Journal Information: Journal of Catalysis; (United States), Vol. 142:2; ISSN 0021-9517
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
02 PETROLEUM
HEXANE
CATALYTIC CRACKING
ZEOLITES
CATALYTIC EFFECTS
ALKENES
CHAIN REACTIONS
CHEMICAL REACTION KINETICS
DILUTION
HETEROGENEOUS CATALYSIS
ISOMERIZATION
NITROGEN
PARAFFIN
ALKANES
CATALYSIS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MATERIALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PYROLYSIS
REACTION KINETICS
SILICATE MINERALS
THERMOCHEMICAL PROCESSES
WAXES
400201* - Chemical & Physicochemical Properties
020400 - Petroleum- Processing