pH-responsive lignin-based magnetic nanoparticles for recovery of cellulase.

Enzymatic hydrolysis of lignocellulose to produce bioethanol by cellulase is an important method to alleviate the energy crisis. In this paper, in order to overcome the shortcomings of low efficiency, high cost and easy deactivation of cellulase in the process of bio-refinery, pH-responsive lignin-based magnetic nanoparticles (FeO/LSQA) were synthesized to immobilize and recover cellulase. It was shown that a high immobilization ratio of 55.

2-Anilino-4,6-dimethyl-pyrimidinium chloro-acetate.

In the crystal structure of the title compound, C(12)H(14)N(3) (+)·C(2)H(2)ClO(2) (-), the chloro-acetate anion is linked to the N-(4,6-dimethyl-pyrimidin-2-yl)aniline cation by N-H⋯O hydrogen bonding. Within the cation, the pyrimidine ring is twisted with respect to the phenyl ring by a dihedral angle of 7.59 (4)°.