The incorporation of B3+ can improve the order of the framework of MCM-41, but B3+ in SiO2 matrix is unstable and easy to be hydrolyzed, which eventually results in the collapse of framework.

• B~(3+)引入会改善MCM-4l骨架的有序性，但存在于二氧化硅骨架中B~(3+)不稳定、极易水解，从而会导致MCM-41骨架的坍塌。