Synthesis of New Catalyst for Coal Liquefaction:Formation of Catalytic Active Species on the Surface of Various Alloys

概要

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The formation of the catalytic species for coal liquefaction was attempted on the surface of various alloys in order to develop a new catalyst having a high mechanical stregth, a high activity and a long life time. Stirrer-rods which were equipped with stirrer-blades made of SUS 304, SUS 316, SKH 9, SCM 3 and Mo-plate were treated separately, as follows: A) treated with H2O under CO pressure at 400°C. B) after the treatment A), it was treated with tetralin, catechol under H2 pressure at 420°C. C) treated with NaOH and H2O under CO pressure at 400°C. D) after the treatment D), it was treated with tetralin, catechol under H2 pressure at 420°C. When the blades made of SUS 316, SKH 9 and SCM 3 were treated by the procedure D), the degree of conversion increased remarkably, but none of the other procedures elevated the conversion yield. In addition, the blades made of SUS 304 and Mo-plate were treated with A) ∼D) were ineffective as liquefaction catalyst. It is considered from these results that a new catalytic active species is formed on the surface of blades made of SUS 316, SKH 9 and SCM 3 by the procedure D). And also, Saechol is effective for hydrogenation of Lithgow and Wandowan coal. The inactivation of the catalyst is found to be recovered easily by the procedure D) after combustion and then washing itself in 6N HCl.
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