β-CYCLODEXTRIN MODIFIED Ni/SFCC TO ENHANCE CATALYTIC HYDROGENATION OF C9 PETROLEUM RESIN

Abstract

Abstract: A novel nickel-based catalyst Ni/SFCC-CD was prepared by wet impregnation of nickel nitrate using spent FCC catalyst（SFCC）as support and β-cyclodextrin（β-CD） as metal chelating agent and evaluated its catalytic activity for C9 petroleum resin hydrogenation. The physicochemical properties of the catalyst were characterized by BET，H2-TPR，and XRD techniques to investigate the action mechanism of β-cyclodextrin and its effect on hydrogenation performance. The results showed that the water-white hydrogenated C9 petroleum resin could be produced with bromine number of 1.45 gBr/（100 g） and the Gardner color number less than 1 at a temperature of 260 ℃，a pressure of 7 MPa，and a reaction time of 120 min. The Ni/SFCC-CD remained good activity after 4 cycles. The complexation of β-CD with nickel nitrate inhibits the decomposition rate of nickel nitrate, controls the crystallization process of NiO and enhances the interaction between the active component Ni and the carrier, thus improving the catalytic activity and stability of Ni/SFCC -CD.

Key words: C9 Petroleum resin, catalytic cracking, spent catalyst, β-cyclodextrin, wet impregnation, hydrogenation

CLC Number:

References

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