PRODUCTION METHOD FOR FLUID CATALYTIC CRACKING CATALYST

To provide a production method for a fluid catalytic cracking catalyst excellent in various characteristics.SOLUTION: A production method for fluid catalytic cracking catalysts comprises: obtaining a mixed slurry including a matrix containing zeolite and basic aluminum chloride, which is a binder component, and lantern carbonate; obtaining the precursor of the fluid catalytic cracking catalyst by atomization-drying the mixed slurry; filtrating the precursor after suspending in an aqueous solution having pH of 5.5 to 7.5 and temperature of 40 to 70°C and further performing cleansing by hot water to obtain a cleansing cake 1; filtrating the cleansing cake 1 after suspending in the aqueous solution of ammonium sulfate having the pH controlled in a range of 5 to 7 and carrying out cleansing by hot water to obtain a cleansing cake 2; adding the aqueous solution including RE2O3 precursor to the cleansing cake 2 after suspending in hot water, agitating, filtrating, cleansing by hot water and drying to obtain a rare earth-substituted fluid catalytic cracking catalyst including lantern carbonate of 5 mass% or more as La2O3 in a catalyst standard.SELECTED DRAWING: None 【課題】各種特性に優れる流動接触分解触媒の製造方法を提供する。【解決手段】ゼオライトおよびバインダー成分の塩基性塩化アルミニウムを含むマトリックスと炭酸ランタンとを含む混合スラリーを得て、その混合スラリーを噴霧乾燥することにより流動接触分解触媒の前駆体を得て、その前駆体を、ｐＨが５．５〜７．５の範囲、温度が４０〜７０℃の範囲の水溶液に懸濁させた後、濾別を行いさらに温水洗浄して洗浄ケーキ１を得て、その洗浄ケーキ１をさらにｐＨを５〜７の範囲に調整した硫酸アンモニウム水溶液に懸濁させた後、濾別を行いさらに温水洗浄して洗浄ケーキ２を得て、その洗浄ケーキ２を、温水中に懸濁させた後、ＲＥ２Ｏ３前駆体を含む水溶液を添加・撹拌し、濾別を行いさらに温水洗浄後、乾燥して、触媒基準でＬａ２Ｏ３として５質量％以上の炭酸ランタン含む希土類置換流動接触分解触媒を得る流動接触分解触媒の製造方法である。【選択図】なし