Characterization and Catalytic Properties of Sulfated Zirconia
type: CreativeWork
description: Sulfated zirconia has attracted extensive attention due to its superactivity to isomerize alkane and alkenes. Platinum or iron/manganese promoted sulfated zirconia has been shown to increase the reaction rate. These catalysts are normally activated to 650-725°C in air before use. Through on-line analysis of evolved gas species during dynamic heating of the catalysts, some significant information can be obtained concerning the activation mechanism. In the present investigation, combined TG-FTIR, TG-MS and TGDTA techniques were utilized to measure the weight loss of the samples, analyze the evolved gas species and to monitor the phase transformation temperature of the solid. Four samples [(1%) 5% Pt/S04 2-VZr02, 2% Fe/0.5% Mn (iron(III)nitrate, maganese(II) nitrate treated/iron(III) sulfate, maganese(II) sulfate treated)/S04 2-/Zr02] were studied by thermal analysis. Also, the catalytic activity of 0.4% Pt/S04 2-/Zr02 was evaluated the isomerization and oligomerization of 1-hexene. It was found that this type of catalyst has high catalytic activity even at ambient and subambient temperatures.
abstract: Sulfated zirconia has attracted extensive attention due to its superactivity to isomerize alkane and alkenes. Platinum or iron/manganese promoted sulfated zirconia has been shown to increase the reaction rate. These catalysts are normally activated to 650-725°C in air before use. Through on-line analysis of evolved gas species during dynamic heating of the catalysts, some significant information can be obtained concerning the activation mechanism. In the present investigation, combined TG-FTIR, TG-MS and TGDTA techniques were utilized to measure the weight loss of the samples, analyze the evolved gas species and to monitor the phase transformation temperature of the solid. Four samples [(1%) 5% Pt/S04 2-VZr02, 2% Fe/0.5% Mn (iron(III)nitrate, maganese(II) nitrate treated/iron(III) sulfate, maganese(II) sulfate treated)/S04 2-/Zr02] were studied by thermal analysis. Also, the catalytic activity of 0.4% Pt/S04 2-/Zr02 was evaluated the isomerization and oligomerization of 1-hexene. It was found that this type of catalyst has high catalytic activity even at ambient and subambient temperatures.
author: Bi, Melody
keywords: Chemistry
date published: 1996-05-01T07:00:00Z
date modified: 2026-07-24T06:07:54Z
provider: Western Kentucky University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Western Kentucky University