Deuterodesulfurization of thiophene: an investigation of the reaction mechanism

Journal Article · Sun Feb 01 00:00:00 EST 1987 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(87)90118-7· OSTI ID:5667343

McCarty, K F; Schrader, G L

The deuterodesulfurization of thiophene was investigated using selected MoS/sub 2/ and reduced molybdenum sulfide (Chevrel phase) catalysts. The extent of deuterium incorporation into thiophene and into specific desulfurization products (hydrogen sulfide, butadiene, and butenes) was determined at 400/sup 0/C for thiophene conversions near 4%. Unpromoted MoS/sub 2/ introduced up to 10 times more deuterium into thiophene than did the promoted catalysts (including the Chevrel phase materials). For all catalysts, H/sub 2/S was formed almost exclusively (typically 90+%), with only small amounts of HDS and D/sub 2/S being detected. Except for the unpromoted MoS/sub 2/ catalyst, the deuterium distributions determined for the cis- and trans-2-butene products were nearly identical; the deuterium distribution found for 1-butene was distinct. A mechanism of thiophene hydrodesulfurization can be proposed in which butadiene is the initial desulfurized reaction product. The hydrogen available for hydrogen sulfide formation is derived via hydrogen exchange with thiophene. 23 references.

• Research Organization: Iowa State Univ., Ames
• OSTI ID: 5667343
• Journal Information: J. Catal.; (United States), Vol. 103:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
02 PETROLEUM
THIOPHENE
DESULFURIZATION
BUTADIENE
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
DEUTERIUM
HYDROGEN
HYDROGEN SULFIDES
HYDROGENATION
ISOTOPIC EXCHANGE
MOLYBDENUM SULFIDES
PROMOTERS
CHALCOGENIDES
CHEMICAL REACTIONS
DIENES
ELEMENTS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
KINETICS
LIGHT NUCLEI
MOLYBDENUM COMPOUNDS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
POLYENES
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
010402* - Coal
Lignite
& Peat- Purification & Upgrading
020400 - Petroleum- Processing