CoB doped acid modified zeolite catalyst for enhanced hydrogen release from sodium borohydride hydrolysis
Küçük Resim Yok
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Cobalt-boron (CoB) catalyst supported on zeolite modified with hydrochloric acid (CoB-zeolite-HCl) and zeolite modified with acetic acid (CoB-zeolite-CH3COOH) is prepared for the hydrogen (H2) release from sodium borohydride (NaBH4). The supported catalyst samples were characterized by X-ray diffraction spectroscopy (XRD), scanning electron microscope (SEM), Fourier transforms infrared spectroscopy (FTIR), nitrogen adsorption and, inductively coupled plasma optical emission spectroscopy (ICP-OES). The effects of Co metal loading, NaBH4 concentration, NaOH concentration, temperature, and reusability on the catalytic performance of the CoB-zeolite-HCl catalyst were investigated. The completion time of the reaction using the raw zeolite supported CoB catalyst was about 265 min. However, the completion time of the reaction using the CoB-zeolite-HCl catalyst was decreased to about 80 min. BET surface area values showed that there is a 7-fold increase in the specific surface area for the zeolite activated with HCl compared to the BET surface area for the raw zeolite. The activation energy (Ea) of the catalyzed reaction was 42.45 kJ mol?1.
Açıklama
Anahtar Kelimeler
Zeolite, Hydrochloric acid, Modification, Support materials, Catalyst, Hydrogen
Kaynak
International Journal of Hydrogen Energy
WoS Q Değeri
Q2
Scopus Q Değeri
Cilt
45
Sayı
30
Künye
Saka, C., Eygi, M. S., & Balbay, A. (2020). CoB doped acid modified zeolite catalyst for enhanced hydrogen release from sodium borohydride hydrolysis. International Journal of Hydrogen Energy, 45(30), 15086-15099.
