Assertion: lignin's structure | /r/MadeOf | imidazolium-based salt
Facets:
Source sentences:
text: It is hypothesized that the usefulness of [EMIM]OAc is because the structure of the ionic liquid contains an imidazolium-based salt and two alkyl groups; because of the cationic nitrogen in the imidazolium, the ionic liquid may be physically and chemically associated with lignin at electron-rich oxygen, such as the β-O-4, α-O-4, and β-β linkages.