Constructing HNT-AC Supported CoNi Nanoparticles for Hydrogen Generation toward NaBH4 Hydrolysis: Optimization with RSM-CCD

Ecer U., Yılmaz Ş., Ulaş B., KAYA Ş.

Catalysis Letters, cilt.154, sa.10, ss.5472-5486, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 154 Sayı: 10
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1007/s10562-024-04727-6
  • Dergi Adı: Catalysis Letters
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Chemical Abstracts Core, Chimica, Compendex
  • Sayfa Sayıları: ss.5472-5486
  • Anahtar Kelimeler: Activated carbon, Halloysite nanotube, Hazelnut shell, Hydrogen production, Optimization, Response surface methodology
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

In this study, activated carbon (AC) obtained from waste hazelnut shell and halloysite nanotube (HNT) were used to prepare HNT-AC support material by hydrothermal method. CoNi/HNT-AC catalyst was synthesized by reducing Co and Ni on HNT-AC by chemical reduction method. CoNi/HNT-AC has been characterized using scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM–EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 adsorption–desorption, elemental mapping, and transmission electron microscopy (TEM) methods. The optimum reaction conditions for hydrogen generation through NaBH4 hydrolysis on CoNi/HNT-AC catalyst were determined using response surface methodology (RSM). The proposed quadratic model for NaBH4 hydrolysis on CoNi/HNT-AC was found to be statistically significant with a correlation coefficient of 0.96. Under the optimum reaction conditions of 40.76 mg catalyst, 0.18 M NaBH4, and 8.64 wt% NaOH, the hydrogen generation rate (HGR) and activation energy (Ea) were obtained as 1114.16 mL/gcat. min. and 24.15 kj/mol, respectively. Graphical Abstract: (Figure presented.)