n-Butylamine and 1-butene adsorption on molybdena and tungsta hydrodesulfurisation catalysts promoted by nickel and cobalt

Abstract

Adsorption of <em>n</em>-butylamineand 1-butene on Co and Ni promooted molybdena and tungsta catalysts has been studied to determine surface acid properties in relation to their desulfurisation reactivity. On examining the effect of Ni content on the adsorption capacity of <em>n</em>-butylamine adsorption sites on Ni-Mo catalysts and its relation to catalytic activity, it is found that <em>n</em>-butylamine adsorption at 90&deg;C is linearly related to activity data. On comparing the <em>n</em>-butylamine adsorption results obtained on molybdena catalysts and tungsta catalysts, it is observed that molybdena catalysts have better acid properties consistent with their higher desulfurisation activity. 1-Butene adsorption results obtained for Ni and Co promoted molybdena and tungsta catalysts show that nickel molybdena catalysts with greater desulfurisation activity have higher 1-butene adsorption as compared to promoted tungsta catalysts.