Development of Zr-SBA-15 supported Ni catalysts reducing carbon formation in dry reforming of methane: Effect of synthesis media

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Okutan C., ARBAĞ H., YAŞYERLİ N., YAŞYERLİ S.

JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.38, sa.1, ss.71-84, 2023 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 1
  • Basım Tarihi: 2023
  • Doi Numarası: 10.17341/gazimmfd.1011296
  • Dergi Adı: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Art Source, Compendex, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.71-84
  • Anahtar Kelimeler: Dry reforming, SBA-15, hydrogen, Zr, one-pot, MESOPOROUS ALUMINA, COKE MINIMIZATION, SYNGAS PRODUCTION, SBA-15, PERFORMANCE, BIOGAS, IMPREGNATION, ZR, TEMPERATURE, RESISTANCE
  • Gazi Üniversitesi Adresli: Evet

Özet

It is aimed to develop SBA-15 supported Ni catalysts with Zr incorporation that can reduce carbon formation for synthesis gas production via dry reforming methane. In this study, Zr-containing SBA-15 support materials were synthesized following a one-pot hydrothermal synthesis method in three different synthesis conditions using HCl (A), NaCl (S) and both HCl and NaCl (B). Ni catalysts containing Zr-SBA-15 support materials were prepared by an impregnation method. Zr-SBA-15 prepared under different synthesis conditions supported Ni catalysts were tested in dry reforming of methane at 750 degrees C. All catalysts were characterized by XRD, N-2 adsorption-desorption isotherms, ICP-OES, DRIFTS, SEM, TEM and TG techniques before and/or after reaction tests in order to explain the relationship between catalytic activity and catalyst properties. Unlike the other two catalysts (5Ni@10Zr. B and 5Ni@10Zr. S), the formation of hexagonal platelet and short mesochannels was observed in the Zr-SBA-15 supported Ni (5Ni@10Zr. A) catalyst synthesized in the presence of HCl. It was determined that Zr (4.5% by weight) incorporated into the structure of 5Ni@10Zr. A catalyst improved the catalytic activity (85% CH4 and 88% CO2 conversions) and significantly reduced carbon formation. In addition, the highest H-2/CO ratio and H-2 yield were obtained with 5Ni@10Zr. A catalyst as 0.79 and 1.37, respectively.