Sustainable Valorization of Spent Car Catalytic Converter as a Catalyst for Formic Acid Dehydrogenation


Ozel Y., Çakman G.

CHEMISTRYSELECT, cilt.11, sa.8, 2026 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 8
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1002/slct.202506379
  • Dergi Adı: CHEMISTRYSELECT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

Formic acid (FA, HCOOH) is one of the possible hydrogen carriers due to its high hydrogen content and liquid-phase stability. In this study, the formic acid dehydrogenation (FAD) reaction was investigated using a spent car catalytic converter (S-CCC) as a catalyst. The catalyst was characterized via TGA, XRD, N-2 sorption, FTIR, and SEM/EDS analyses, confirming the presence of active metal oxides such as Al2O3, MgO, CeO2, ZrO2, and PdO, as well as a mesoporous structure with high thermal stability. The catalytic performance of S-CCC was evaluated under varying temperatures (70-90 degrees C), catalyst dosages (0.20-0.60 g), and FA concentrations (1-5 M). The results showed that the hydrogen generation rate increased with temperature, and optimal gas generation (similar to 80 mL) was observed at 80 degrees C using 3 M FA and 0.20 g S-CCC. No modification was applied to the S-CCC, highlighting its practical feasibility, and the findings demonstrate that this catalyst is a low-cost, eco-friendly, and effective catalyst for hydrogen production via FAD reaction.