METANIN KURU REFORMLANMA REAKSİYONUNDA İNDİRGEME VE REAKSİYON SICAKLIKLARININ MEZOGÖZENEKLİ ALÜMİNA DESTEKLİ NİKEL KATALİZÖRLERİN AKTİVİTELERİNE VE KARBON OLUŞUMUNA ETKİLERİ

Yıl 2018, Cilt: 33 Sayı: 1, 0 - 0, 08.03.2018

Hüseyin Arbağ , Sena Yaşyerli , Nail Yaşyerli , Gülşen Doğu , Timur Doğu

https://doi.org/10.17341/gazimmfd.406780

Cited By: 3

Öz

Bu çalışmada reaksiyon sıcaklığının ve reaksiyon öncesi katalizör hazırlama basamaklarından biri olan indirgeme sıcaklığının katalizörün aktivitesine ve karbon oluşumuna etkisi incelenmiştir. Çalışmada yüksek yüzey alanına sahip mezogözenekli alümina malzemesi sol-jel yöntemiyle hazırlanmıştır. Farklı oranlarda nikel içerikli (kütlece %16 ve %8) katalizörler tek-kap ve emdirme yöntemiyle hazırlanarak farklı indirgeme sıcaklarında (550 ^oC ve 750 ^oC) indirgenmişlerdir. Metanın kuru reformlanma reaksiyonları 600 ^oC ve 750 ^oC sıcaklıkta dolgulu kolon reaktör sisteminde yürütülmüşlerdir. İndirgeme sıcaklığının katalizör yapısındaki nikelin oksidasyon değerliğini ve kristal boyutunu etkileyerek metan dönüşümünü ve hidrojen seçiciliğini artırdığı belirlenmiştir. Yüksek reaksiyon sıcaklıklarında metanın kuru reformlanma reaksiyonu paralelinde gerçekleşen RWGS ve karbon oluşum reaksiyonları azaltılabilmektedir.

Anahtar Kelimeler

Metanın kuru reformlanma reaksiyonu, mezogözenekli alümina, indirgeme sıcaklığı, reaksiyon sıcaklığı, nikel

Kaynakça

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