57.石炭液化Ni含有リモナイト触媒のキャラクタリゼーション

抄録

Metal compositions of Ni containing Soroako limonite in Indonesia were characterized by using TG, XRD, TEM-EDX and XPS in relation to the catalytic activities in direct coal liquefaction. It appeared that α-FeOOH and Al(OH)_3 were dominant species in Soroako limonite and very fine particles of Fe_<1-X>S were formed by the addition of elemental sulfur at 300℃. The crystal growth of Fe_<1-X>S may be suppressed by some interactions such as Fe-O-Al, leading to the high liquefaction activity. Results of TEM-EDX analysis suggest that Ni may locate near Fe_<1-X>S species, which is recognized as an active phase in coal liquefaction.