Aluminum‐based composite particles are widely applied complex catalyst materials in oil refining. Due to their tunable shape, porosity, and acidity, they are commonly used for the production of cracking catalysts. Shaping of well‐defined particles remains a challenge for industrial catalyst preparation by spray drying, because catalyst properties must satisfy local demands of a refinery. The selectivity can be modified and the cracking activity enhanced with acid binders, e.g., AlCl₃. Therefore, peptization of AlCl₃‐containing suspensions with zeolite Y and kaolin was characterized by pH value, ²⁷Al NMR spectroscopy, and zeta potential. A new control strategy for binding of kaolin and zeolite Y in spray drying was developed by adjusting the pH and binder Al/Cl ratio.

中文翻译：

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活性基质催化剂上含氯化铝的复合物的胶溶控制

铝基复合颗粒是炼油中广泛应用的复杂催化剂材料。由于它们的形状，孔隙率和酸度可调，它们通常用于生产裂化催化剂。对于通过喷雾干燥制备工业催化剂，定义良好的颗粒形状仍然是一个挑战，因为催化剂的性能必须满足炼油厂的本地要求。可以通过使用诸如AlCl _3的酸性粘合剂来改变选择性并提高裂化活性。因此，用pH值²⁷表征了用Y型沸石和高岭土对含AlCl ₃的悬浮液进行胶溶的特性。Al NMR光谱和ζ电势。通过调节pH值和粘结剂Al / Cl的比例，开发了一种新的控制策略，用于在喷雾干燥中结合高岭土和沸石Y。