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NiMoS catalysts supported on MgO–Al 2 O 3 oxides, with 95 and 80mol% of MgO, were synthesized by sol–gel method. In order to study the Ni promoter effect, MgO–Al 2 O 3 supports were impregnated with a pH=9 solution of Mo and Ni–Mo, respectively; the catalysts were dried (D) and calcinated (C). Catalytic tests showed a Ni promoter effect of 4.5 on the NiMoMg95Al5-D catalyst...
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