Assertion: lignin's group | /r/CapableOf | impede reaction
Facets:
value: with formaldehyde
type: OTHER
Source sentences:
text: Unlike phenol, in which electrophilic aromatic substitution can take place at the para and the two ortho positions, many reactive sites of lignin’s aromatic ring are methoxylated or occupied by other groups, which impedes the reactions with formaldehyde (Hu et al.