Clarifying the catalytic role of NiO nanoparticles in the oxidation of asphaltenes

Authors:  Nashaat N. Nassar, Azfar Hassan, Pedro Pereira-Almao

Abstract:
A recent paper by Abu Tarboush and Husein [1] discusses the catalytic activity of NiO nanoparticles obtained from different precursors/sources and questions the catalytic activity of commercial NiO nanoparticles reported previously [2–4]. In this communication we would like to reiterate the salient features of our work [2–4] that have been overlooked in the article of reference [1]. Also we point out some misinterpretation of TG/DTA data and possible flaws in experimental procedure described [1]. Based on the TG/DTA data provided [1] we have found that in situ prepared NiO species are catalytically less active than the commercially available NiO nanoparticles under discussion. Few recommendations are suggested that may enable the authors to study in depth the catalytic role of NiO nanoparticles for post-adsorption asphaltenes oxidation.

Keywords:
Athabasca asphaltenes
Arabian asphaltenes
Adsorption
Oxidation
NiO
Nanoparticles

Published in: Applied catalysis A: General  (Volumes 462–463, Pages 1-310, 10 July 2013)

Publisher: Elsevier      

ISSN Information: 0926-860X

Clarifying the catalytic role of NiO nanoparticles in the oxidation of asphaltenes

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