On-site hydrogen-rich gas production from diesel: A comprehensive study on catalyst development with nickel and diverse metal oxides (MgO, La2O3, CeO2, SiO2) supported on alumina


Sahingoz N. C., Talu K., OKTAR N., DOĞU T., Pamuk I.

Applied Catalysis A: General, cilt.687, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 687
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.apcata.2024.119940
  • Dergi Adı: Applied Catalysis A: General
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Diesel, Hydrogen, Metal oxide support, Nickel, Steam reforming
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The study aimed to investigate the impact of nickel-incorporating diverse metal oxides (MgO, La2O3, CeO2, SiO2) supported on alumina on the Diesel steam reforming reaction. Catalytic activity tests were performed within a reaction period of 6 h at 800°C and atmospheric pressure. The amount of catalyst is 30 gr in each experiment corresponding to a LHSV value of 0.2 hr−1. The tests proved that the performances of Ni-containing La2O3 and CeO2-supported catalysts were highly stable and active in steam reforming of Diesel, giving complete conversion. The incorporation of CeO2 (20 % wt) into Al2O3 support resulted in a significant reduction in the amount of coke formation from 0.85 % to 0.26 %. In order to investigate catalyst stability, time-on stream tests extending to 6 days, totaling 36 hours were performed using 5Ni@10La2O3-Al2O3. As a result of the long-term stability test, no deactivation has been observed under the test conditions despite very few amounts of carbon (1.33 wt%) formed. When comparing the short-term and long-term tests, similar syn-gas production results were observed, along with approximately the same amount of carbon formation.