Methanol reacts with B2O3 to form boron esters that volatilize upon evaporation, a process linked to enolate formation and breakdown. This reaction is discussed in organic chemistry texts, particularly in relation to the aldol reaction. For pressing and sintering powders, it is advised to seek alternative suppliers and maintain an argon atmosphere. Using a hot hydrogen stream may introduce complications due to hydrogen dissolution in boron. Wet methods are not recommended for this process.