CAS: 55702-45-9; 2,3,6-Trichloro-1,1'-Biphenyl

相似化合物

33284-54-7 74472-46-1 74472-36-9

上下游产品

1,2,3,4,-tetrachlorobenzene benzene 2,3,6-trichloroanisole 2,3,5,6-tetrachlorobiphenyl 2,6-dichlorobiphenyl 2,3-dichlorobiphenyl 2,5-dichlorobiphenyl

📜2,3,5,6,-四氯联苯置于titanium(Iii) Citrate-Reduced Vitamin B12S体系中,用 甲醇,水 作为反应溶剂,化学反应 1920.0H,反应生成 2,3,5-三氯联苯,2,3,6-三氯联苯
参考文献:Polychlorinated Biphenyl Reductive Dechlorination By Vitamin B12S: Thermodynamics And Regiospecificity
标题:Polychlorinated Biphenyl Reductive Dechlorination By Vitamin B12S: Thermodynamics And Regiospecificity
摘要:Microbial Reductive Dechlorination Reactions Play An Important Role In Determining The Environmental Fate Of Polychlorinated Biphenyls (Pcbs),Especially For Pcb Congeners With More Than Four Chlorines. Powerful Chemical Catalysts Such As Vitamin B-12S Provide An Effective Tool For The Study Of Reductive Dechlorination Reactions. The Reductive Dechlorination Of Pcbs By Titanium(Iii) Citrate-Reduced Vitamin B12S Was Studied In Batch Reactors. Longterm Experiments Demonstrated Reductive Dechlorination Of Aqueous And Sediment-Sorbed 2,3,4,5,6-Pentachlorobiphenyl (2,3,4,5,6-Pecb) To Tetra-,Tri-,Di-,And Monochlorobiphenyl Products. Approximately 10% Chlorine Removal Was Observed In 36 Days In Aqueous Experiments At 20 Degrees C; The Sediment Experiment Showed 40% Chlorine Removal In 42 Days At 30 Degrees C. Nearly All Possible Intermediates Were Produced And Reductively Dechlorinated,With No Apparent Accumulation Of Individual Congeners. Short-Term Experiments Were Conducted To Determine The Pathway For Vitamin B-12S-Catalyzed Reductive Dechlorination Of Aqueous 2,3,4,5,6-Pecb And Its Dechlorinated Products; Relative Product Distributions Were Measured For All Possible Tetra-And Trichlorobiphenyl Reductive Dechlorination Reactions. Theoretical Product Distributions Based On Free Energies Of Formation Agreed With Observed Product Distributions For Short-And Long-Term Experiments. Reductive Dechlorination Was Favored At Positions With Adjacent Chlorines; On Average,Chlorines Were Removed Equally From Ortho,Meta,And Para Positions.
DOI:10.1021/es9804823