CATALYST FOR SELECTIVE OXIDATIVE DESULFURIZATION AND PREPARATION METHOD THEREOF

摘要

The present invention relates to a catalyst for selective oxidative desulfurization having a prolonged lifetime, and a preparation method thereof. More specifically, the present invention relates to a catalyst for selective oxidative desulfurization, and a preparation method thereof, wherein a catalyst for selective oxidative desulfurization in which the surface of a silica support is modified to be hydrophobic through silylation using an organic silane compound is further provided to a catalyst for selective oxidative desulfurization in which a predetermined amount of transition metals are supported in a silica support, thereby maximizing selective oxidative desulfurization performance to petroleum hydrocarbons having a high sulfur compound content and preventing sulfone compounds, by-products of selective oxidative desulfurization, from being deposited on the support of the catalyst to extend the lifetime of the catalyst to the maximum. In addition, the present invention relates to a method for preparing the catalyst for selective oxidative desulfurization, comprising: the first step of injecting in an organic solvent a transition metal precursor and a chelating agent for reaction thereof; the second step of injecting a support to an aqueous solution for mixture thereof; the third step of mixing and stirring the solutions prepared at the first and second steps; and the fourth step of drying and sintering the solution prepared at the third step. The catalyst prepared by the preparation method maintains a high catalytic activity and has an increased lifetime by preventing the formation and aggregation of large active metals showing a low reactivity in case of supporting an active metal component.