Improving external mass transfer involves enhancing the movement of reactants to the catalyst surface. This can be achieved by: 1. Increasing Agitation: Stirring or shaking can help reduce the boundary layer thickness around the catalyst particles, thereby enhancing mass transfer. 2. Optimizing Reactor Design: Using reactors like fluidized bed reactors or packed bed reactors can improve the contact between reactants and catalyst, enhancing mass transfer. 3. Reducing Particle Size: Smaller catalyst particles have a larger surface area-to-volume ratio, which can improve mass transfer rates.
