Effects of Na2SO4 or NaCl on sonochemical degradation of phenolic compounds in an aqueous solution under Ar: Positive and negative effects induced by the presence of salts was written by Uddin, Helal Md.;Nanzai, Ben;Okitsu, Kenji. And the article was included in Ultrasonics Sonochemistry in 2016.Computed Properties of C6H5ClO2 The following contents are mentioned in the article:
Sonochem. degradation of 4-chlorophenol, phenol, catechol and resorcinol was studied under Ar at 200 kHz in the absence and presence of Na2SO4 or NaCl. The rates of sonochem. degradation in the absence of salts decreased in the order 4-chlorophenol > phenol > catechol > resorcinol and this order was in good agreement with the order of log P (partition coefficient) value of each phenolic compound The effects of salts on the rates of sonochem. degradation consisted of no effect or slight neg. or pos. effects. We discussed these unclear results based on two viewpoints: one was based on the changes in pseudo hydrophobicity and/or diffusion behavior of phenolic compounds and the other was based on the changes in solubility of Ar gas. The measured log P value of each phenolic compound slightly increased with increasing salt concentration In addition, the dynamic surface tension for 4-chlorophenol aqueous solution in the absence and presence of Na2SO4 or NaCl suggested that phenolic compounds more easily accumulated at the interface region of bubbles at higher salt concentration These results indicated that the rates of sonochem. degradation should be enhanced by the addition of salts. On the other hand, the calculated Ar gas solubility was confirmed to decrease with increasing salt concentration The yield of H2O2 formed in the presence of Na2SO4 or NaCl decreased with increasing salt concentration These results suggested that sonochem. efficiency decreased with decreasing gas amount in aqueous solution: a neg. effect of salts was observed Because neg. and pos. effects were induced simultaneously, we concluded that the effects of salts on the rates of sonochem. degradation of phenolic compounds became unclear. The products formed from sonochem. degradation of 4-chlorophenol were also characterized by HPLC anal. The formation of phenol and 4-chloro-1,3-dihydroxy benzene was confirmed and these concentrations were affected by the presence of salts. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Computed Properties of C6H5ClO2).
4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Computed Properties of C6H5ClO2
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics