MCM-48 synthesized at high pressure appeared higher thermal and hydrothermalstability than that synthesized at autogenous pressure.
与常压合成的相比，高压下合成的MCM - 48具有更高的热稳定性和水热稳定性。
2
The catalyst was slow in carbon deposition and good in chlorine retention, high in hydrothermalstability and excellent in structural stability.
催化剂积炭速率慢，具有良好的持氯能力、水热稳定性和结构稳定性。
3
Proper increase of La ion exchange degree not only increased the stability of the framework structure but also the hydrothermalstability of acid sites.