Yes, phase composition can be controlled through various methods:
Synthesis methods: The choice of synthesis method (e.g., sol-gel, precipitation, impregnation) can influence the phase composition. Calcination: The temperature and atmosphere during calcination can affect the formation of different phases. Doping: Introducing dopants can stabilize certain phases or promote the formation of desired phases. Support material: The type of support material can influence the dispersion and interaction of the active phase.