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- W3149806836 abstract "The direct oxidation of ethylene to acetic acid over Pd acid/support catalysts in a fixed bed reactor was studied. The results showed that when the phospho tungstic acid (H 3PW 12 ), phospho molybdic acid (H 3PMo 12 ), phosphoric acid, sulfuric acid, silicotungstic acid (H 4SiW 12 ) or its soldium salts were supported on Pd/SiO 2, the acid strength influences the catalytic activity strongly, and the catalyst with stronger acid strength has higher activity. The acidity of Pd H 4SiW 12 catalysts supported respectively on SiO 2, activated carbon (AC), and acid clay (ACy) was characterized by NH 3 TPD and i C 3H 7OH dehydration. The results showed that the supports affect the catalytic activity through influencing the acid strength. The more the strong acid sites on catalyst, the higher the catalytic activity. When the silica, AC or ACy was used as support, the influence of Pd dispersion determined by hydrogen adsorption on the catalytic activity can not be observed. Therefore, it can be deduced that the decisive factor to the activity of catalysts is the acid strength but not the Pd dispersion." @default.
- W3149806836 created "2021-04-13" @default.
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- W3149806836 date "2002-01-01" @default.
- W3149806836 modified "2023-09-25" @default.
- W3149806836 title "Effect of Support and Acidity of Catalyst on Direct Oxidation of Ethylene to Acetic Acid" @default.
- W3149806836 hasPublicationYear "2002" @default.
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