Abstract
Publisher Summary This chapter discusses the use of iron-based disposable catalysts for the coprocessing of coal and heavy oil residues in solvent augmented coal liquefaction. An introduction of iron-based disposable catalyst in the form of catalyzed activated coals (CAC) improves the dissolution of coal. A variety of sulphided iron CAC's, with a range of percentage iron loadings on the coal surface, are produced by heterogeneous precipitation, by adding Na 2 S solution to a slurry of coal and FeCl 3 . Solvent augmentation with heavy oil residues (HOR's), especially decant oil, given the correct additions, will not detrimentally affect the dissolution of coal in process derived recycle solvent (PDRS). The problems associated with HOR coprocessing, such as coking and poor dissolution can be significantly reduced and in some cases, eliminated by their augmentation with a hydrogen donor solvent.
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