Fundamental studies of transition metal sulfide hydrodesulfurization catalysts

Conference · · Catal. Rev.; (United States)

OSTI ID:5691605

Chianelli, R R

Hydroprocessing catalysts based upon the transition metal sulfides have been widely used for over 60 years and catalysts such as Co/Mo/Al/sub 2/O/sub 3/ remain the industry ''workhorses'' in hydroprocessing of petroleum-based feedstocks. Such applications include sulfur removal (hydrodesulfurization), nitrogen removal (hydrogenitrogenation), and product quality improvement (hydroheating, hydroconversion). Co, Ni, Mo, and W sulfides and their mixtures are the most active and least expensive of the transition metal sulfides. Their major uses are hydroprocessing of sulfur- and nitrogen-containing petroleum-based feedstocks with Co- and Ni-promoted Mo and W catalysts usually supported on Al/sub 2/O/sub 3/. However, as petroleum feedstock supplies dwindle, the processing of larger quantities of ''dirtier'' feeds containing larger amounts of sulfur, nitrogen, and metals is required. In order to meet these requirements in the future, a new generation of transition metal sulfide-based catalysts will be needed which have higher activities, greater selectivity to desired products, and greater resistance to poisons. In spite of the importance of these catalysts, little is understood regarding the general fundamental basis for and origin of their catalytic activity, although specific knowledge regarding Co/Mo catalysts is progressing rapidly. This paper reviews some recent studies of the fundamental properties of transition metal sulfide catalysts, which govern their ability to catalyze a given reaction. 34 references, 17 figures, 4 tables.

• Research Organization: Exxon Research and Engineering Co., Annandale, NJ
• OSTI ID: 5691605
• Report Number(s): CONF-840102-
• Conference Information: Journal Name: Catal. Rev.; (United States) Journal Volume: 26:3-4
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL FEEDSTOCKS
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
CHEMISORPTION
DATA
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
ENTHALPY
EXPERIMENTAL DATA
FORMATION HEAT
FOSSIL FUELS
FUELS
HYDROCARBONS
INFORMATION
METALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PETROLEUM
PHYSICAL PROPERTIES
REACTION HEAT
SEPARATION PROCESSES
SORPTION
SULFIDES
SULFUR
SULFUR COMPOUNDS
SURFACE AREA
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
THERMODYNAMIC ACTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS