Approaches to Ultra Deep Desulfurization

Approaches to ultra-deep desulfurization include (1) improving catalytic activity by new catalyst formulation for HDS of 4,6-DMDBT (2) tailoring reaction and process conditions (3) designing new reactor configurations and (4) developing new processes. One or more approaches may be employed by a refinery to meet the challenges of producing ultra-clean fiiels at affordable cost. 

Design approaches for developing more active catalysts are based on the ideas to tailor the active sites for desired reactions. The exact nature of active 

Among the Co-Mo-S structures for aliunina-supported catalysts, the intrinsically more active phase was referred to as type II (Co-Mo-S II), and the less active phase as t) e I (Co-Mo-S 1) the t) e I stmcture is assumed to be bonded to support through Mo-O-Al linkages and has less stacking, whereas the t) e II stmcture has higher stacking and few linkages with 

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