Coadsorption as a probe of mechanism: cyclic sulfides and straight chain thiols on Mo(110)

Journal Article · Wed Jul 08 04:00:00 EDT 1987 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00248a064· OSTI ID:5890439

Roberts, J T; Friend, C M

The authors reported that tetrahydrothiophene and trimethylene sulfide undergo desulfurization on Mo(110) to form gaseous alkanes and alkenes in a temperature-programmed reaction experiment. In both cases, straight chain alkane evolution preceded alkene evolution. They proposed that the intermediate leading to straight chain alkanes and alkenes from these two cyclic sulfides is a surface thiolate. The thiolate undergoes competitive C/sub 1/-hydrogenation to alkane and C/sub 2/-dehydrogenation to alkene, depending on the surface hydrogenation concentration. They report here that coadsorbed cyclic sulfides C/sub n/H/sub 2n/S (n = 3, 4) and linear thiols C/sub m/H/sub 2m+1/SH(m = 2, 3, 4) react during a temperature-programmed reaction experiment to form alkanes C/sub n/H/sub 2n+2/ and C/sub m/H/sub 2m+2/ at exactly the same temperature. These experiments lend powerful support to their proposal that cyclic sulfides and straight chain thiols react on Mo(110) by way of a thiolate intermediate.

• Research Organization: Harvard Univ., Cambridge, MA
• DOE Contract Number: FG02-84ER13289
• OSTI ID: 5890439
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 109:14; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ALKANES
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
METALS
MOLYBDENUM
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
REACTION INTERMEDIATES
SORPTION
SORPTIVE PROPERTIES
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
SYNTHESIS
THIOLS
TRANSITION ELEMENTS