Effect of Cobalt Precursors on Properties of Co/CoAl2O4 Catalysts Synthesized by Solvothermal Method | Zendy

Sirirat Rojanapipatkul | Zendy; James G. Goodwin | Zendy; Piyasan Praserthdam | Zendy; Bunjerd Jongsomjit | Zendy

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Effect of Cobalt Precursors on Properties of Co/CoAl2O4 Catalysts Synthesized by Solvothermal Method

Author(s) -

Sirirat Rojanapipatkul,

James G. Goodwin,

Piyasan Praserthdam,

Bunjerd Jongsomjit

Publication year - 2012

Publication title -

engineering journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.246

H-Index - 20

ISSN - 0125-8281

DOI - 10.4186/ej.2012.16.4.5

Subject(s) - cobalt , catalysis , materials science , chemical engineering , solvothermal synthesis , business , chemistry , metallurgy , organic chemistry , engineering

In the present study, different cobalt precursors, such as cobalt acetylacetonate (CoAA), cobalt acetate (CoAC), cobalt nitrate (CoN) and cobalt chloride (CoCL), were employed to synthesize the cobalt on cobalt-aluminate catalysts by the solvothermal process. The calcined samples were characterized by means of N 2 physisorption, XRD, SEM/EDX, TEM and TPR. The CO hydrogenation under methanation condition was performed to measure the activity and product distribution. It revealed that the CoN sample exhibited the highest activity due to high reducibility and large crystallite size having fewer interactions. The similar trend was observed for the CoAC and CoAA samples. However, the CoCL sample had the lowest activity, but highest selectivity to C 2 -C 4 products. This was likely attributed to the different form of cobalt oxide species obtained from CoCl 2 as seen from XRD.

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