摘要
利用Bunsen副反应测试实验装置,按照特定比例对H2SO4、HI、I2和H2O的混合溶液进行副反应的实验研究,详细探讨了水和碘量对于Bunsen副反应发生的机理影响。结果表明,增加水或者碘量,能够同时抑制Bunsen反应HI相和H2SO4相溶液中的副反应,缩短副反应的反应时间。水对副反应的抑制效果优于碘。在50℃,H2SO4、HI和I2物质的量之比为1∶2∶1.6时,仅发生Bunsen逆反应,同时水量对其影响不大,此时的工况能够作为Bunsen反应净化的运行条件。在60℃,H2SO4、HI和H2O物质的量之比为1∶2∶12时,硫或硫化氢形成副反应的发生较为明显,但是Bunsen逆反应相对于硫或硫化氢形成副反应仍是占主导的副反应,碘量对于副反应的影响是两方面的。
The influence of water and iodine content on Bunsen side reaction occurrence was investigated in detail by experimentally studying the mixture solution of sulfuric acid （ H2SO4 ）, hydriodic acid （ HI）, iodine （ 12 ） and water （H20） in the side reaction test apparatus. The experimental results indicated that Bunsen side reactions in both of HI and HzSO4 phases were suppressed with water or iodine increase. Meantime, side reaction time was shortened. The suppression effect of water on side reactions was greater in comparison with iodine. Only reverse Bunsen reaction occurred at 50~C and H2SO4/HI/I2 equaling to 1/2/1.6. The water little affected reverse Bunsen reaction change this moment. Consequently, the operating condition favored purification step of Bunsen reaction. Sulfur and hydrogen sulfide formation side reactions occurred obviously at 60℃ and H2SO4/HI/H2O equaling to 1/2/12, whereas reverse Bunsen reaction occurrence was predominant in contrast to the former side reactions. Iodine had complicated effects on Bunsen side reactions.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第9期1628-1633,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51006088)
