Silika destekli Ni(II)-salisilaldimin kompleksinin sentezi, karakterizasyonu ve hidrojen üretimindeki katalitik etkisinin incelenmesi

Yıl 2018, Cilt: 20 Sayı: 1, 296 - 310, 25.02.2018

Dilek Kılınç

https://doi.org/10.25092/baunfbed.398476

Öz

Silika destekli Ni(II)-Schiff Bazı kompleksinin hazırlanması amacıyla, daha önceki çalışmamızda sentezlenen [1] Ni(II)-Schiff Bazı Kompleksi, SiO2 üzerine tutturularak SiO2 destekli Ni(II)-Schiff Bazı kompleksi elde edildi.  Hazırlanan bu SiO2 destekli kompleks, katalitik aktivitesine bakılmak üzere hidrojen üretim için NaBH4’ün hidroliz reaksiyonunda katalizör olarak kullanıldı. Hazırlanan bu katalizörün yapısı FT-IR, SEM, XRD, BET analizi gibi spektroskopik yöntemlerle aydınlatıldı.  SiO2 destekli Ni(II)-Schiff Bazı kompleksinin katalizör olarak kullanıldığı NaBH4’ün hidroliz reaksiyonu; NaOH ve NaBH4 konsantrasyonuna, katalizör miktarına, SiO2 destekli Ni(II)-Schiff Bazı kompleks katalizörünün içerisinde bulunan Ni (II)-Schiff Bazı kompleksinin yüzdesine ve sıcaklığa bağlı olarak incelendi.  NaBH4’ün hidroliz reaksiyonuna ait maksimum reaksiyon hızı (R0)  13005 mL H2 g-1 kat. dk-1, reaksiyonun aktivasyon enerjisi (Ea) ise 16,633 kJ/mol olarak, reaksiyon hız mertebesi n ise 0,3 olarak hesaplanmıştır. 

Anahtar Kelimeler

Hidroliz, hidrojen üretimi, salisilaldimin kompleksi, kataliz

Investigation of synthesis, characterization and catalytic effect on hydrogen production of silica supported-Ni(II)-salicylaldimine complex

Öz

For preparing SiO2 supported Ni (II)-Schiff Base complex,  Ni (II)-Schiff Base complex, which was synthesized in our previous work, was used and supported on SiO2.  This SiO2 supported complex was used as a catalyst in hydrolysis reaction of NaBH4 for hydrogen production, to look at its catalytic activity. The structure of this prepared catalyst was illuminated by spectroscopic methods such as FT-IR, SEM, XRD, BET analysis.  The SiO2 supported Ni(II)-Schiff complex catalyzed hydrolysis reaction was investigated depending on the concentration of NaOH and NaBH4, amount of catalyst percentage of Ni (II) -Schiffe complex in the SiO2 supported Ni (II)-Schiff complex complex catalyst and the temperature.  The maximum reaction rate (R0) for the hydrolysis reaction of NaBH4 is 13005 mL H2 g -1. min, the activation energy of the reaction (Ea) is 16,633 kJ/mol, and the reaction rate n is 0.3.

Anahtar Kelimeler

Hydrolysis, hydrogen production, salicylaldimine complex, catalysis

Kaynakça

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