Structural transformation of lignin from eucalyptus during chlorine dioxide bleaching was written by Qin, Chengrong;Huang, Lingzhi;Lv, Quanfeng;Nie, Shuangxi;Yao, Shuangquan. And the article was included in BioResources in 2019.Product Details of 95-88-5 The following contents are mentioned in the article:
Enzymic/mild acidolysis lignin was extracted from both unbleached and bleached eucalyptus pulp, and the difference in lignin structures was analyzed by NMR spectroscopy. The unbleached pulp lignin was chlorinated with chlorine dioxide, and the mechanism of adsorbable organic halide (AOX) formation was investigated. Chlorinated reaction products were detected by gas chromatog.-mass spectrometry. There is a possibility of producing three different chlorobenzene or chlorophenol products from S/S lignin dimers that are connected with β-O-4 bonds. Based on quantum chem. theory, three reaction pathways were investigated using mol. simulation techniques. The results showed that pathway 1 possessed the lowest reaction activation energy, which made it the most favored thermodynamically. The β-O-4 bond of the lignin dimer was cleaved. Following that scission, 2-chloro-3,5-dimethoxy-Me benzene was the most likely product to be generated from the chlorination reaction of the syringyl unit. These results provide theor. guidance for further reduction of AOX in chlorine dioxide bleaching. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Product Details of 95-88-5).
4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Product Details of 95-88-5
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics