Insights into the Catalytic Performance of Multichannel Ceramic Catalytic Membrane in Liquid-Phase p-Nitrophenol Hydrogenation: Role of Storage Method

Catalytic membrane reactor is an improving approach for the green chemical industry. The highly efficient storage method of a catalytic membrane is vital for maintaining its catalytic performance. Herein, a simple and efficient storage method was developed for the Co@CM multichannel ceramic catalytic membrane, i.e., storing the fresh catalytic membrane in ethanol before use. The yielded Co@CM-E-W has the smallest contact angle with the reaction solvent and the shortest penetration time for the solvent into the membrane pores, which can promote the reaction solution into the membrane pores and suppress the leaching of Co nanoparticles, thereby enhancing its catalytic activity and stability. Co@CM-E-W achieves 100% conversion of p-nitrophenol within 20 min in each reaction cycle.