Browsing by Author "naimah@unimap.edu.my"
Now showing items 1-4 of 4
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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 ... -
Palm-Sorbent: Acid-Impregnated Palm Fibre for Sorption of Cr (VI) from Chrome Plating Effluent
Naimah, Ibrahim; Umi Fazara, Md. Ali; Masitah, Hasan; Mahyun, Ab Wahab; Salwa, Mohd Zaini Makhtar; Nazerry Rosmady, Rahmat; Razi, Ahmad (Malaysian Invention and Design Society (MINDS), 2007-05-18)PALM-Sorbent is very effective for removal of Cr (VI) from industrial effluent. Its minimal pretreatment includes chemical modification with H2SO4 impregnation ratio of 1:1, followed by overnight heat treatment at 150 ... -
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 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 ...