Hydrodesulfurization over a TiO/sub 2/-ZrO/sub 2/-supported CoO-MoO/sub 3/ catalyst

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

OSTI ID:5269693

Daly, F P; Ando, H; Schmitt, J L; Sturm, E A

The binary oxide TiO/sub 2/-ZrO/sub 2/, whose chemical and physical properties were found to be strongly dependent on metal oxide ratio, precipitation methodology, and calcination temperature, was investigated as a support material for a CoO-MoO/sub 3/ hydrodesulfurization (HDS) catalyst. Thiophene HDS studies at 1 atm and 300/sup 0/C revealed that the TiO/sub 2/-ZrO/sub 2/-supported catalyst had an initial activity, on a weight basis, over twice that of a CoO-MoO/sub 3//Al/sub 2/O/sub 3/ catalyst, but suffered rapid deactivation. Nitric oxide chemisorption/temperature-programmed desorption (TPD) results suggest that the high initial activity of the TiO/sub 2/-ZrO/sub 2/-supported catalyst may be due to a weaker Mo-support interaction, yielding a greater number of more reactive coordinately unsaturated Mo sites. Thermal gravimetric analysis and differential scanning calorimetry results suggest that deactivation of the TiO/sub 2/-ZrO/sub 2/-supported catalyst is at least in part due to coke formation.

• Research Organization: American Cyanamid Co., Stamford, CT (USA)
• OSTI ID: 5269693
• Journal Information: J. Catal.; (United States), Vol. 108:2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
01 COAL, LIGNITE, AND PEAT
CATALYST SUPPORTS
PERFORMANCE TESTING
THIOPHENE
DESULFURIZATION
TITANIUM OXIDES
ZIRCONIUM OXIDES
ALUMINIUM OXIDES
CALORIMETRY
CATALYSTS
CATALYTIC EFFECTS
CHEMISORPTION
COBALT OXIDES
COKE
DEACTIVATION
DEPOSITION
DESORPTION
MOLYBDENUM OXIDES
NITRIC OXIDE
THERMAL GRAVIMETRIC ANALYSIS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COBALT COMPOUNDS
GRAVIMETRIC ANALYSIS
HETEROCYCLIC COMPOUNDS
MOLYBDENUM COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
REFRACTORY METAL COMPOUNDS
SEPARATION PROCESSES
SORPTION
TESTING
THERMAL ANALYSIS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
020400* - Petroleum- Processing
010402 - Coal
Lignite
& Peat- Purification & Upgrading