Zinc phthalocyanine as a heterogeneous catalyst for efficient H₂ generation from NaBH₄ methanolysis
Yükleniyor...
Dosyalar
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Ltd
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
Phthalocyanines have been extensively studied for their role in photodynamic therapy, sensors, optoelectronic devices etc.; however, their use as catalysts for hydrogen generation (HG) has remained a relatively unexplored area in scientific literature. This study is the first investigation into the catalytic potential of zinc phthalocyanine (ZnPc) complex in hydrogen production via methanolysis reaction of sodium borohydride (NaBH₄). The kinetic performance of the ZnPc catalyst was evaluated based on catalyst amount, NaBH₄ concentration, temperature, and reusability. The ZnPc-catalyzed NaBH₄ methanolysis completed in 5.7 min, with a hydrogen generation rate of 8993 mLmin⁻¹gcat⁻¹—comparable to or better than many similar catalysts—and an activation energy of 28.47 kJ/mol. The catalyst exhibited remarkable reusability with no significant loss in catalytic activity when used for the three-cycle reaction. Additionally, the ZnPc-catalyzed NaBH₄ methanolysis mechanism was also examined, revealing that –OH, –O–, and –N=N– groups play key roles in its notable HG efficiency. Overall, this study presents ZnPc as a promising catalyst for HG and emphasizes its catalytic efficiency and application potential in sustainable energy technologies.
Açıklama
Anahtar Kelimeler
Catalyst, Hydrogen generation, Methanolysis, NaBH₄, Zn-phthalocyanine
Kaynak
International Journal of Hydrogen Energy
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
176
