Bis(2-benzimidazolyl)propane was synthesized by the reaction of o-phenylenediamine and glutaric acid which was accelerated by microwave irradiation and catalyzed by poly phosphoric acid(PPA) under solvent-free conditi...Bis(2-benzimidazolyl)propane was synthesized by the reaction of o-phenylenediamine and glutaric acid which was accelerated by microwave irradiation and catalyzed by poly phosphoric acid(PPA) under solvent-free condition. By the method of orthogonal experiment optimize synthesis factors which affect the reation: o-Phenylent Diamine: glutaric acid:2.2∶1.0(mol:mol),PPA:9.0g,time of microwave irradiation:8min, and the power of microwave irradiation:160W. Under the optimal condition, the highest yield of Bis(2-benzimidazolyl) propane is 77.4%. The products were characterized by melting point determination, IR spectrogram,1HNMR spectra and 13CNMR spectra.展开更多
The synergistic extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+,Dy3+)by Bis（1′-phenyl-3′-mcthyl-5′-pyrazolonc-4′-yl）Phthaldionc（H2BPMOPP or H2A）with 8-Hydroxyquinolinc（HOx）from nitric acid aolution was stu...The synergistic extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+,Dy3+)by Bis（1′-phenyl-3′-mcthyl-5′-pyrazolonc-4′-yl）Phthaldionc（H2BPMOPP or H2A）with 8-Hydroxyquinolinc（HOx）from nitric acid aolution was studied.The synergistic coefficient for La3+ was 8.1.The composition of the extracted compound was shown to be LaA·HA·HOx.The pH1/2 values for La3+,Pr3+,Nd3+,Gd3+ and Dy3+ were 4.20,3.73,3.49,3.30 and 3.01 respectively.The extraction equilibrium constants,enthalyp change and entropy change of the reaction also were calculated.展开更多
文摘Bis(2-benzimidazolyl)propane was synthesized by the reaction of o-phenylenediamine and glutaric acid which was accelerated by microwave irradiation and catalyzed by poly phosphoric acid(PPA) under solvent-free condition. By the method of orthogonal experiment optimize synthesis factors which affect the reation: o-Phenylent Diamine: glutaric acid:2.2∶1.0(mol:mol),PPA:9.0g,time of microwave irradiation:8min, and the power of microwave irradiation:160W. Under the optimal condition, the highest yield of Bis(2-benzimidazolyl) propane is 77.4%. The products were characterized by melting point determination, IR spectrogram,1HNMR spectra and 13CNMR spectra.
文摘The synergistic extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+,Dy3+)by Bis（1′-phenyl-3′-mcthyl-5′-pyrazolonc-4′-yl）Phthaldionc（H2BPMOPP or H2A）with 8-Hydroxyquinolinc（HOx）from nitric acid aolution was studied.The synergistic coefficient for La3+ was 8.1.The composition of the extracted compound was shown to be LaA·HA·HOx.The pH1/2 values for La3+,Pr3+,Nd3+,Gd3+ and Dy3+ were 4.20,3.73,3.49,3.30 and 3.01 respectively.The extraction equilibrium constants,enthalyp change and entropy change of the reaction also were calculated.
