Synthesis of Ni/Al2O3 catalysts via alkaline polyol method and hydrazine reduction method for the partial oxidation of methane
Yazarlar (3)
Doç. Dr. Ezgi BAYRAKDAR ATEŞ
Yalova Üniversitesi, Türkiye
Türkiye
İstanbul Üniversitesi-Cerrahpaşa, Türkiye
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale |
| Dergi Adı | Turkish Journal of Chemistry |
| Dergi ISSN | 1300-0527 Wos Dergi Scopus Dergi |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Dergi Grubu | Q4 |
| Makale Dili | İngilizce |
| Basım Tarihi | 08-2021 |
| Cilt No | 45 |
| Sayı | 4 |
| Sayfalar | 967 / 985 |
| DOI Numarası | 10.3906/kim-2012-46 |
| Makale Linki | http://doi.org/10.3906/kim-2012-46 |
| Özet |
| Nickel catalysts supported on $γ-Al_2 O_3$ were synthesized in the presence of polyvinylpyrrolidone (PVP) using both alkaline polyol method and hydrazine reduction method while fixing the weight ratio of $[(PVP)]/[Ni(CH_3 COO)_2 ·4H_2 O]$ at 2. The effects of hydrazine $[N_2 H_5$ OH]/[Ni] and [NaOH]/[Ni] molar ratios on the structural properties of the catalysts were characterized by transmission electron microscopy (HRTEM) and by X-ray diffraction (XRD). The average of monodispersed Ni nanoparticles ranged between 8.0 and 13.0 nm. The catalytic tests were performed for the partial oxidation of methane in the temperature range of 600–800 °C under a flow rate of 157,500 L $kg^{–1}$ hr–1 with $CH_4 /O_2$ = 2. At the molar ratio of [NaOH]/[Ni] = 2, the resultant nickel nanoparticles on alumina was established completely without impurities; thus, it demonstrated the highest catalytic activity, 88% for $CH_4$ conversion, and H2 selectivity, 90.60%. The optimum $[N_2 H_5 OH]/[Ni]$ ratio was determined as 4.1, which means a good catalytic performance and 89.35% selectivity to H2 for the partial oxidation of methane. |
| Anahtar Kelimeler |
| Alkaline polyol method | hydrazine reduction | nickel | nanoparticles | catalytic partial oxidation of methane |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| WoS | 3 |