Amalia, Rahma and Riyanto, Teguh and Istadi, Istadi (2021) Reactivation of the Spent Residue Fluid Catalytic Cracking (RFCC) Catalyst through Acid Treatment for Palm Oil Cracking to Biofuels. Teknik, 42 (2): 39642. ISSN 2460-9919

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Abstract

This work discusses the treated spent Residue Fluid Catalytic Cracking (RFCC) catalysts using sulfuric or citric acids to examine the impact of acid treatment on the catalyst physicochemical properties and catalytic performance. The catalysts were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), and Brunauer−Emmett−Teller-Barrett−Joyner−Halenda (BET-BJH) methods. The catalyst's performance was examined in a continuous fixed-bed reactor for catalytic cracking of palm oil. It was found that the acid treatment on the spent RFCC catalyst can increase the surface area and pore volume of catalysts as well as the crystallinity. The closed pores in the spent RFCC are opened by acid treatment by eliminating heavy metals. In terms of the catalytic performance, the acid-treated catalysts had better performance than the non-treated catalyst, increasing the selectivity of the kerosene-diesel range fraction from 47.89% to 55.41%. It is interesting since the non-treated catalyst could not produce a gasoline fraction, while the acid-treated catalysts could produce a gasoline fraction at a selectivity range of 0.57 – 0.84%. It is suggested that both sulfuric or citric acids treatment could increase the cracking performance of spent RFCC catalyst by shifting the liquid product to lower hydrocarbons.

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