dc.contributor.author | Cinar, Tugce | |
dc.contributor.author | Altincekic, Tuba Gurkaynak | |
dc.date.accessioned | 2021-03-06T11:55:09Z | |
dc.date.available | 2021-03-06T11:55:09Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Cinar T., Altincekic T. G. , "Synthesis and investigation of bimetallic Ni-Co/Al2O3 nanocatalysts using the polyol process", PARTICULATE SCIENCE AND TECHNOLOGY, cilt.34, ss.725-735, 2016 | |
dc.identifier.issn | 0272-6351 | |
dc.identifier.other | vv_1032021 | |
dc.identifier.other | av_f1628ed3-70df-4a5c-b170-c90fe43a6911 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12627/158358 | |
dc.identifier.uri | https://doi.org/10.1080/02726351.2015.1115452 | |
dc.description.abstract | Ni-Co/Al2O3 catalysts with different Ni:Co ratios by weight were prepared using a simple polyol process. The activities of the catalysts were evaluated for the catalytic partial oxidation of methane (CPOM) in the temperature range of 600-800 degrees C. Numerous techniques such as x-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, inductively coupled plasma-mass spectroscopy (ICP-MS), thermogravimetric analysis ( TGA), high-resolution transmission electron microscopy analysis (HRTEM), scanning electron microscopy analysis (SEM-EDS) and temperature-programmed oxidation (TPO) were applied to characterize fresh and spent catalysts. The XRD analysis confirmed that the loaded particles were metals and showed possible bimetallic nano-alloy Ni-Co formation for Ni-and Co-containing catalysts. The highest metal dispersion was 15.7% for the Ni2.8Co2.6/Al2O3 catalyst. The catalytic test results showed no correlation between metal dispersion and the metal particle size, and the activity decreased in the order of Ni-7.7/Al2O3 > Ni2.8Co2.6/Al2O3 approximate to Ni3.8Co1.5/Al2O3 > Ni2.0Co3.8/Al2O3 >> Co-6.8/Al2O3 under a flow rate of 157,500 L kg(-1) h(-1) with CH4/O-2 = 2 (using air as an oxidant) at 800 degrees C. The obtained results also showed that when the actual atomic Ni/Co ratio was 1.07 in the Al2O3-supported catalyst, the dispersion of the active sites appeared to be promoted by Co addition, and the catalytic activity was stable over a reaction time of 10 h. Among all the tested catalysts, the Ni2.8Co2.6/Al2O3 catalyst exhibited acceptable activity (75%) without coking. | |
dc.language.iso | eng | |
dc.subject | Mühendislik | |
dc.subject | MÜHENDİSLİK, KİMYASAL | |
dc.subject | Mühendislik ve Teknoloji | |
dc.subject | Kimya Mühendisliği ve Teknolojisi | |
dc.subject | Mühendislik, Bilişim ve Teknoloji (ENG) | |
dc.title | Synthesis and investigation of bimetallic Ni-Co/Al2O3 nanocatalysts using the polyol process | |
dc.type | Makale | |
dc.relation.journal | PARTICULATE SCIENCE AND TECHNOLOGY | |
dc.contributor.department | İstanbul Üniversitesi , , | |
dc.identifier.volume | 34 | |
dc.identifier.issue | 6 | |
dc.identifier.startpage | 725 | |
dc.identifier.endpage | 735 | |
dc.contributor.firstauthorID | 227350 | |