Effect of impurities upon the rate of dehydrogenation of n-paraffins

Journal Article · Sat Dec 31 23:00:00 EST 1983 · Pet. Chem. USSR (Engl. Transl.); (United States)

DOI:https://doi.org/10.1016/0031-6458(84)90094-7· OSTI ID:6320745

Sadykhova, Z A; Rapoport, V O; Nekrasov, N V; Gurevich, V R; Kiperman, S L

C/sub 10/-C/sub 14/ paraffinic fractions used for dehydrogenation to linear olefins normally contain up to 1-0 wt. % impurity. For manufacture of high-grade surface-active agents, the olefins used should not contain more than 0-5 wt. % aromatic hydrocarbons. The literature shows that the level and structure contaminating hydrocarbons in the paraffin feed depends on the method of separation of the last named. Paraffins obtained by deparaffination using crystalline carbamide and purified by sulfuric acid, contain principally mono-, di- and tri-substituted aromatic hydrocarbons (with an overall content not exceeding 1-0 wt. %). Paraffins obtained by deparaffination of petroleum fractions over MgA microspherical zeolite contain homologues of naphthalene. Indene, acenaphthene, dephenyl and phenanthrenes usually do not exceed (0-1 to 0-5 wt. % of the overall aromatic content). The presence in liquid paraffins of considerable aromatic impurities would be expected to reduce the selectivity and stability of catalysts. The effect of naphthalene and indene upon the rate of dehydrogenation of n-decane in the presence of a platinum-tin catalyst was studied to clarify this expectation. 5 references, 2 tables.

• OSTI ID: 6320745
• Journal Information: Pet. Chem. USSR (Engl. Transl.); (United States), Journal Name: Pet. Chem. USSR (Engl. Transl.); (United States) Vol. 24:1; ISSN PECHA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
ALKANES
AROMATICS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CONDENSED AROMATICS
DATA
DEHYDROGENATION
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HYDROCARBONS
IMPURITIES
INDENE
INFORMATION
KINETICS
METALS
NAPHTHALENE
NUMERICAL DATA
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PLATINUM
PLATINUM METALS
REACTION KINETICS
TIN
TRANSITION ELEMENTS