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EFFECT OF VANADIUM AND TITANIUM SUBSTITUTION OVER AN ANTIMONY-BASED MIXED OXIDE CATALYSTS FOR PROPANE AMMOXIDATION TO ACRYLONITRILE

Ramli, Anita and Abdul Hamid, Asna Rasyidah and Manaf, Faridah and Ibrahim, Suhaina M. (2007) EFFECT OF VANADIUM AND TITANIUM SUBSTITUTION OVER AN ANTIMONY-BASED MIXED OXIDE CATALYSTS FOR PROPANE AMMOXIDATION TO ACRYLONITRILE. [Citation Index Journal]

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Abstract

Antimony (Sb) oxide is known to be the active phase for the ammoxidation of propane to acrylonitrile (ACN). The influenced of V and/or Ti on the physicochemical properties of Sb-based mixed oxide catalysts were studied using catalysts prepared by slurry method. The dried precursor was calcined in air at 350-600 oC for a total of 10 h. The active phase in Sbpromoted catalysts were determined using X-ray Diffraction (XRD) while the changes in microstructure of these catalysts were studied using physical adsorption of nitrogen gas. The catalytic activity of these catalysts were tested in a fixed-bed reactor with online GC at 420 oC with reaction feed (%v) of 5.8:7:17.4 for propane, ammonia and oxygen, respectively. Results show that promotional of Sb with V and/or Ti has an effect on the chemical environment of the Sb-mixed oxide catalysts, leading to differences in catalytic activity of these catalysts.

Item Type:Citation Index Journal
Subjects:Q Science > QD Chemistry
Departments / MOR / COE:Departments > Fundamental & Applied Sciences
ID Code:3286
Deposited By: Assoc Prof Dr Anita Ramli
Deposited On:24 Nov 2010 00:36
Last Modified:19 Jan 2017 08:26

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