A Review of High-Efficient Synthetic Methods for Zeolite Membranes and Challenges of Their Directional Growth Control

Zeolite membranes are widely used in separation, catalysis, sensors and other fields because of their good diffusion performance, shape selection catalysis capabilities. However, the slow synthesis rate zeolite restricts industrialization process, random orientation seriously affects performance. Therefore, this paper investigates methods for accelerating zeolites roles different was explored. The conditions oriented also summarized. Microwave method can efficiently synthesize membranes, but it has defects harsh high equipment requirements. Using physical chemical to introduce hydroxyl radicals, which is an effective improve zeolites. there a lack research on how realize directional during process. Synthesis conditions, template support properties affect membranes. while introducing free adjusting composition synthetic solution or inhibitors that growth direction system efficient membrane, another potential promote membrane besides microwave method.