Ni-BASED CATALYSTS FOR CO2 REFORMING OF GLYCEROL TO H2
23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022, İstanbul, Türkiye, 26 - 30 Haziran 2022, ss.119-121, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.119-121
- Anahtar Kelimeler: Catalyst, CO2, Glycerol, Hydrogen, Reforming
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Dry reforming of glycerol is a recently emerging pathway for making H2. The route is promising due to the consumption of glycerol, a side product of biodiesel synthesis, with CO2, a major greenhouse gas. This study aims to develop Ni-based catalysts for providing insight into the role of support material on activity towards glycerol dry reforming. In this respect, Ni/La2O3, Ni/ZrO2 and Ni/La2O3-ZrO2, all loaded with 5% Ni by mass, are synthesized. The catalysts are tested at 750°C, molar inlet CO2-to-glycerol ratio (CO2/G) between 1-5 and residence time of 0.25 mg min NmL-1. The results clearly showed that Ni/La2O3-ZrO2 was more active than the single-oxide supported counterparts. The catalyst showed superior durability with only 12% loss in CO2 conversion after the 72-h time-on-stream stability test. On the other hand, Ni/ZrO2 and Ni/La2O3 were completely deactivated at the 47th and 63rd h of the stability tests, respectively. Superior activity and stability of the Ni/La2O3-ZrO2 is attributed to the fine dispersion of the Ni nanoparticles and durability against coke deposition.