Catalytic oxidation of carbon monoxide over of gold-supported iron oxide catalyst. (23rd February 2018)

• Record Type: Journal Article
• Authors: Altass, Hatem M.; Khder, Abd El Rahman S.
• Is Part Of: Materials research innovations. Volume 22:Number 2(2018)
• Page Start: 107
• Page End: 114
• Publication Date: 2018-02-23
• Subjects: Gold -- nanoparticles -- iron oxide -- CO oxidation; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1080/14328917.2016.1264707
• Languages: English
• ISSNs: 1432-8917

Abstract

Abstract: In this work, a series of gold nanoparticles deposited on α-FeOOH nanorods were studied in relation to their performance in the low-temperature oxidation of CO. The catalysts were characterised by different techniques such as, Fourier transform infrared (FTIR), X-ray diffraction (XRD), N2 adsorption/desorption, hydrogen temperature programmed reduction (H2 -TPR) and transmission electron microscope (TEM) images. The XRD proved the formation of α-FeOOH crystalline structure and also showed small diffraction peaks for Au-agglomerated particles on the surface. While TEM images revealed the formation of α-FeOOH with nanorod structure with different dimensions, TEM also showed some agglomerations of Au particles on the support surface. The H2 -TPR experiments the enhancement of Au/α-FeOOH reducibility. The performance of Au/α-FeOOH in the CO oxidation was greatly affected by Au content and α-FeOOH preparation method.