Browsing Naimah Ibrahim, Assoc. Prof. Dr. by Author "Naimah, Ibrahim"
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Influence of impurities and catalyst surface characteristics on the oxygen charge transfer reaction in the Pt/YSZ system
Mas Rahayu, Jamil; Naimah, Ibrahim; Poulidi, Danai; Ian S., Metcalfe (Elsevier B.V., 2012-10-04)Spillover processes (i.e. the migration of ionic species from the support to the catalyst and vice versa) are known to play a very important role in catalysis and electrocatalysis. These spillover processes can be influenced ... -
Removal of chromium (VI) from aqueous solution using treated oil palm fibre
Mohamed Hasnain, Isa; Naimah, Ibrahim; Hamidi, Abdul Aziz; Mohd. Nordin, Adlan; Nor Habsah, Md. Sabiani; Ali Akbar Lorestani, Zinatizadeh; Shamsul Rahman, Mohamed Kutty (Elsevier B.V, 2007-07-17)This study proposed an oil palm by-product as a low-cost adsorbent for the removal of hexavalent chromium [Cr (VI)] from aqueous solution. Adsorption of Cr (VI) by sulphuric acid and heat-treated oil palm fibre was conducted ... -
The role of low coverage sodium surface species on electrochemical promotion in a Pt/YSZ system
Naimah, Ibrahim; Mas Rahayu, Jalil; Poulidi, Danai; Ian S., Metcalfe (Elsevier B.V., 2012-10-04)The effect of sodium-modification on the catalyst and electrocatalytic properties of a platinum catalyst supported on a YSZ solid electrolyte was studied. Increasing the sodium coverage on the catalyst surface appears to ... -
The role of sodium surface species on electrochemical promotion of catalysis in a Pt/YSZ system: The case of ethylene oxidation
Naimah, Ibrahim; Poulidi, Danai; Metcalfe, Ian S. (Elsevier Inc., 2013-07)The role of sodium addition as foreign (impurity) species on the electrochemical promotion of ethylene oxidation in a Pt/YSZ system was investigated. It was found that the presence of sodium surface species on the catalyst ... -
The role of sodium surface species on oxygen charge transfer in the Pt/YSZ system
Naimah, Ibrahim; Poulidi, Danai; Rivas, Maria Elena; Baikie, Iain D.; Ian S., Metcalfe (Elsevier Limited, 2012-08-01)The role of sodium surface species in the modification of a platinum (Pt) catalyst film supported on 8 mol% yttria-stabilised-zirconia (YSZ) was investigated under a flow of 20 kPa oxygen at 400°C. Cyclic and linear sweep ...