Scalable preparation of high‐performance ceramic catalytic membranes for continuous hydrogenation

Abstract The industrial viability of catalytic membrane relies on its high mechanical strength, large surface area per volume, and scalable production. Multi‐channel ceramic membranes (CM) offer these advantages, making them promising supports for catalytic membranes. Here, a 22 cm‐scale modular system was developed using single‐core and three‐core configurations to fabricate and evaluate Co@CM multi‐channel catalytic membranes. Key synthesis parameters—including pump speed, dopamine and Co 2+ concentrations, and pyrolysis temperature—were systematically optimized. Batch production of Co@CM membranes with consistent properties was successfully achieved in the three‐core module. The optimized Co@CM‐15‐9‐25‐700 catalyst demonstrated near‐complete 4‐nitrophenol conversion within 10 min and sustained performance for over 50 h, delivering a 4‐aminophenol productivity of 104.1 mmol/h—far surpassing previously reported catalytic systems. This study establishes a scalable and robust membrane preparation strategy, offering a practical platform for industrial catalytic applications under continuous‐flow conditions.