Table 1.

Content of reaction mixtures.

Sample	Material	Methyltrimethoxysilane (MTMOS)	Ethanol	Catalyst
C	cellulose	−	−	-
C–M	cellulose	+	+	-
C–M–Al	cellulose	+	+	aluminum acetylacetonate (Al(acac)3)
C–M–Ac	cellulose	+	+	acetic acid (AcOH)
L	lignin	−	−	-
L–M	lignin	+	+	-
L–M–Al	lignin	+	+	Al(acac)3
L–M–Ac	lignin	+	+	AcOH