表面活性剂对磺化酞菁钴苛性碱液的稳定化作用研究

Study on the Effects of Activator on the Stability of CoPcS-Alkaline Solution

针对磺化酞菁钴在氢氧化钠碱液中易聚沉的问题,考察了四乙基氢氧化铵(TEAH)和复合表面活性剂XZHA的添加对磺化酞菁钴氢氧化钠溶液(剂碱液)稳定性能的影响,结果表明,TEAH的添加对剂碱液的稳定性作用不大,XZHA的添加可以大大提高剂碱液的稳定性。无氢氧化钠存在时,在磺化酞菁钴的水溶液中添加TEAH或TEAH和XZHA的复配液都会使磺化酞菁钴的稳定性得到较大的提高,在静置17 d后,紫外-可见光谱仍能保持原来新鲜剂碱液的吸光度值。考察了4种剂碱液脱除辛硫醇的效率,结果表明,添加w(XZHA)=0.25%的磺化酞菁钴氢氧化钠溶液的脱硫醇效率远远高于磺化酞菁钴氢氧化钠溶液的脱硫醇效率,反应时间6m in时的脱硫醇率分别为97.14%和75.13%。

In view of coagulation of sulfonated cobalt phthalocyanine in alkaline solution, the effect of adding composite activator XZHA or tetraethyl ammonium hydroxide （TEAH） into the solution of catalyst-alkaline was examined. It was found that, the addition of TEAH had little effect on the stability of catalyst-alkaline solution. The stability of catalyst-alkaline solution can be improved greatly by adding XZHA. Results show that in the absence of alkali, the stability of sulfonated cobalt phthalocyanine can be improved greatly by adding TEAH or the composite liquid of TEAH and XZHA. After standing for 17 days, the absorbance of UV - Vis spectra of catalyst solution has little change as compared with the fresh catalyst-alkaline solution. Efficiency of removing octanethiol by four kinds of. catalyst-alkaline solution was detected. Results revealed that by adding XZHA [ w （XZHA） = 0. 25% ], the efficiency of removing octanethiol of the catalyst-alkaline solution was much higher than that of the catalyst-alkaline solution without XZHA. When the time was 6 min, the removal efficiency were 97.14% and 75.13% respectively.