Abstract
A commercial coal liquefaction catalyst, Amocat 1A, has been subjected to a deactivation study in a laboratory catalytic coal liquefaction microreactor. Carbonaceous and metal deposits were the two major factors causing catalyst deactivation. The carbonaceous material deposited primarily in the interior of the catalyst particle and clogged the pores in a uniform manner. The metals deposit was rich in calcite and deposition was mostly restricted to the external surface of the catalyst particle. It appears that either mechanism operating alone will completely deactivate the catalyst after processing roughly 1000 weights of coal per weight of catalyst.
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