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Rasoul Zanganeh,Mehran Rezaei,Akbar Zamaniyan,Hamid Reza Bozorgzadeh 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.1
Ni0.1Mg0.9O nanocrystalline powders were prepared by surfactant assisted precipitation method and employed as catalyst in dry reforming. The powders were characterized by using XRD, BET, SEM, TGA/DSC and TPR techniques. The results showed that the surfactant to metal mole ratio affects the textural properties. Increasing in surfactant to metal mole ratio increased the specific surface area and decreased the crystallite and particle size. The Ni0.1Mg0.9O with the highest surface area (115.39 m2 g-1) was employed as catalyst in dry reforming. This catalyst showed a high catalytic activity and stability during 122 h time on stream without any decrease in methane conversion.
H2S oxidation by multi-wall carbon nanotubes decorated with tungsten sulfide
Ali Mohamadalizadeh,Jafar Towfighi,Morteza Adinehnia,Hamid Reza Bozorgzadeh 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.4
Tungsten sulfide catalysts decorated on single and multiwall carbon nanotubes (SWNTs & MWNTs) and activated carbon were synthesized, and XRD, ICP, SEM, TEM and ASAP analyses were employed to acquire the characteristics of each catalyst. Afterwards a gas flow containing 5,000 ppm of H2S was passed over the catalyst in gas hour space velocity (GHSV) of 5,000 h−1, temperature of 65 oC, steam volume percent of 20 and O2/H2S ratio equal to 2. The results revealed that the catalyst supported on MWNTs exhibited higher conversion amongst its counterparts. Then effects of GHSV, steam volume percent in the feed, catalyst loading and temperature were investigated on conversion of hydrogen sulfide to elemental sulfur for tungsten sulfide catalyst decorated on MWNTs.