Shi, Lisheng published the artcileEffect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching, Recommanded Product: 3-Chloro-4-hydroxy-5-methoxybenzoic acid, the main research area is lignin structure chlorine dioxide bleaching; adsorbable organic halogens; bleaching; chlorine dioxide; lignin model compounds.
Adsorbable organic halogens (AOX) are formed in pulp bleaching as a result of the reaction of residual lignin with chlorine dioxide. The natural structure of lignin is very complex and it tends to be damaged by various extraction methods. All the factors can affect the study about the mechanism of AOX formation in the reaction of lignin with chlorine dioxide. Lignin model compounds, with certain structures, can be used to study the role of different lignin structures on AOX formation. The effect of lignin structure on AOX formation was determined by reacting phenolic and non-phenolic lignin model compound with a chlorine dioxide solution Vanillyl alc. (VA) and veratryl alc. (VE) were selected for the phenolic and non-phenolic lignin model compound, resp. The pattern consumption of lignin model compounds suggests that both VA and VE began reacting with chlorine dioxide within 10 min and then gradually steadied. The volume of AOX produced by VE was significantly higher than that produced by VA for a given initial lignin model compound concentration In a solution containing a combination of VA and VE in chlorine dioxide, VE was the dominant producer of AOX. This result indicates that the non-phenolic lignin structure was more easily chlorinated, while the phenolic lignin structure was mainly oxidized. In addition, AOX content produced in the combined experiments exceeded the total content of the two sep. experiments It suggested that the combination of phenolic and non-phenolic lignin structure can promote AOX formation.
Royal Society Open Science published new progress about Bleaching. 62936-23-6 belongs to class chlorides-buliding-blocks, name is 3-Chloro-4-hydroxy-5-methoxybenzoic acid, and the molecular formula is C8H7ClO4, Recommanded Product: 3-Chloro-4-hydroxy-5-methoxybenzoic acid.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics