Selective CO methanation over NiO--Al_2O_3--ZrO_2 and Co_3O_4--Al_2O_3--ZrO_2 catalysts

Filiz DEREKAYA; Derya ERMERGEN

Makale detayları

Selective CO methanation over NiO--Al_2O_3--ZrO_2 and Co_3O_4--Al_2O_3--ZrO_2 catalysts

Yazarlar:

Filiz DEREKAYA | Derya ERMERGEN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2015 Vol.39 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

8/2015

Belge Dili:

Türkçe

Document ID (Org No.):

2000726933

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

NiO--Al_2O_3--ZrO_2 and  Co_3O_4--Al_2O_3--ZrO_2 catalysts were prepared by three  different co-precipitation methods, namely co-precipitation,  surfactant-assisted co-precipitation, and surfactant-assisted  co-precipitation with ultrasound mixing methods, and their activities were  tested in selective CO methanation. Catalysts were characterized using  N_2 physisorption, XRD, SEM, TEM, XPS, and TPR-H_2 techniques. CO  methanation and selective CO methanation reactions were carried out.  Catalysts prepared by surfactant assisted co-precipitation gave high surface  area, uniform pore size distributions, and small pores. The  NiO--Al_2O_3--ZrO_2 catalyst prepared by surfactant-assisted  co-precipitation gave 50% CO conversion to CH_4 at 155 °C  and all CO converted to CH_4 when T > 225 °C. For the  selective CO methanation, the CO level decreased below 100 ppm at 200  °C over the NiO--Al_2O_3--ZrO_2 catalyst prepared by  surfactant-assisted co-precipitation.

 

NiO--Al_2O_3--ZrO_2 and  Co_3O_4--Al_2O_3--ZrO_2 catalysts were prepared by three  different co-precipitation methods, namely co-precipitation,  surfactant-assisted co-precipitation, and surfactant-assisted  co-precipitation with ultrasound mixing methods, and their activities were  tested in selective CO methanation. Catalysts were characterized using  N_2 physisorption, XRD, SEM, TEM, XPS, and TPR-H_2 techniques. CO  methanation and selective CO methanation reactions were carried out.  Catalysts prepared by surfactant assisted co-precipitation gave high surface  area, uniform pore size distributions, and small pores. The  NiO--Al_2O_3--ZrO_2 catalyst prepared by surfactant-assisted  co-precipitation gave 50% CO conversion to CH_4 at 155 °C  and all CO converted to CH_4 when T > 225 °C. For the  selective CO methanation, the CO level decreased below 100 ppm at 200  °C over the NiO--Al_2O_3--ZrO_2 catalyst prepared by  surfactant-assisted co-precipitation.

Makale detayları

Selective CO methanation over NiO--Al_2O_3--ZrO_2 and Co_3O_4--Al_2O_3--ZrO_2 catalysts

Yazarlar: Filiz DEREKAYA | Derya ERMERGEN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2015 Vol.39 Issue 2

Belge Tipi: Makale

Yayın Tarihi: 8/2015

Belge Dili: Türkçe

Document ID (Org No.): 2000726933

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Filiz DEREKAYA | Derya ERMERGEN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2015 Vol.39 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

8/2015

Belge Dili:

Türkçe

Document ID (Org No.):

2000726933

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527