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Activity Patterns in the Catalytic Reduction of SO2 on Some Transition Elements in Alumina.

PB210988

Publication Date	1972
Personal Author	Haas, L. A.; McCormick, T. H.; Khalafalla, S. E.
Page Count	22
Abstract	SO2 reduction with CO was studied in an integral flow reactor at a nominal flow of 0.5 liter per minute. Reactant gas contained 3 percent SO2, 6 percent CO, and the balance helium. SO2 conversion was determined for three different types of catalysts. The first consisted of 16 commercial catalysts used for various chemical syntheses. Only the commercial catalysts which contained transition metals in alumina removed more than 30 percent SO2 at temperatures below 510C. Two other types of catalysts were prepared in the laboratory either by pelletizing equal amounts of powdered alumina and transition metal oxides or by impregnating alumina tablets with transition metal ions. Regardless of preparation techniques, Cr or Fe in alumina were the two best catalysts. The observed results suggest that an intermediate (SCO) is formed by the interaction of surface metal sulfides and carbonyls. (Author)
Keywords	Sulfur dioxide Reduction(Chemistry) Catalysts Air pollution Carbon monoxide Aluminum oxides Iron Chromium Sulfur Metal industry Air pollution control Carbonyl sulfide
Source Agency	Invalid Source Agency Code
NTIS Subject Category	68A - Air Pollution & Control
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197218

Activity Patterns in the Catalytic Reduction of SO2 on Some Transition Elements in Alumina.

Activity Patterns in the Catalytic Reduction of SO2 on Some Transition Elements in Alumina.
PB210988

Publication Date	1972
Personal Author	Haas, L. A.; McCormick, T. H.; Khalafalla, S. E.
Page Count	22
Abstract	SO2 reduction with CO was studied in an integral flow reactor at a nominal flow of 0.5 liter per minute. Reactant gas contained 3 percent SO2, 6 percent CO, and the balance helium. SO2 conversion was determined for three different types of catalysts. The first consisted of 16 commercial catalysts used for various chemical syntheses. Only the commercial catalysts which contained transition metals in alumina removed more than 30 percent SO2 at temperatures below 510C. Two other types of catalysts were prepared in the laboratory either by pelletizing equal amounts of powdered alumina and transition metal oxides or by impregnating alumina tablets with transition metal ions. Regardless of preparation techniques, Cr or Fe in alumina were the two best catalysts. The observed results suggest that an intermediate (SCO) is formed by the interaction of surface metal sulfides and carbonyls. (Author)
Keywords	Sulfur dioxide Reduction(Chemistry) Catalysts Air pollution Carbon monoxide Aluminum oxides Iron Chromium Sulfur Metal industry Air pollution control Carbonyl sulfide
Source Agency	Invalid Source Agency Code
NTIS Subject Category	68A - Air Pollution & Control
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197218