EVALUASI REAKTIFITAS KATALIS NiMo DALAM PROSES PENCAIRAN BATUBARA BANKO SELATAN DAN AUSTRALIAN LOY YANG

Hartiniati Hartiniati

Abstract


Indonesia South Banko (BS) and Australian Loy Yang (LY) were liquefied using
two hydrogenation catalysts, Ni/Mo and Co/Mo at mild condition (400oC, 6MPa
(H2 cold)). The study shows that the use of Ni/Mo in hydrogenation for both BS
and LY coals gives a higher total conversion, asphaltene and OGW (oil-gaswater)
yields than that of Co/Mo. The use of Ni/Mo for LY coal hydrogenation
gives higher total coanversion and asphaltene yield than SB coal. This suggests
that SB has more condensed structure than LY coal. However, the amount of oil
yield is similar for both coals. Furthermore, the use of Co/Mo for both coals also
gives almost equal result in total conversion, asphaltene and OGW yields.
Addition of sulphur (as CS2) enhances the total conversion and OGW yield for
both catalysts Ni/Mo and Co/Mo. Sulphur addition on Ni/Mo treated coal did not
improve the asphaltene yield, but converted it into lower molecular weight.
Adding sulphur could also improve total conversion for Co/Mo treated coal similar
to Ni/Mo/CS2 treated coal. Increasing reaction time also improves the total
conversion, asphaltene and OGW yield. The reactivitiy of BS and LY in this study
is also dependent on their behaviour or characteristic, such the environment of
oxygen content in the macro structure of the coal.
Kata kunci: south banko coal, australian loy yang coal, ni/mo catalyst, co/mo
catalyst, asphaltene, coal liquefaction


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DOI: http://dx.doi.org/10.29122/elk.v4i1.1541

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