The invention relates to a
copper-
cerium double-
metal modified 4A
molecular sieve desulfurization adsorbent as well as a preparation method and application thereof. The adsorbent takes
copper and
cerium as
active components and takes a 4A
molecular sieve synthesized by kaolin as a
carrier material. The method comprises the following steps: (1) preparing a
copper source solution, carrying out copper impregnation modification on a 4A
molecular sieve through a water bath, and calcining after centrifugal
drying to obtain a copper modified molecular
sieve; and (2) preparing a
cerium source solution, performing cerium impregnation modification on the copper modified molecular
sieve through a water bath, and calcining after centrifugal
drying to obtain the copper-cerium double-
metal modified 4A molecular
sieve desulfurization adsorbent. The adsorbent is applied to the field of
fuel oil deep desulfurization. Compared with the prior art, thedsorbent provided by the invention has the advantages of capability of realizing excellent desulfurization performance under normal temperature and normal pressure conditions, small influence on components in the fuel, high
octane number, low investment, low operation cost, low
energy consumption, high desulfurization rate and the like.