碘酸钾催化电解葡萄糖制氢过程研究

基于多金属氧酸盐(POMs)的催化电解生物质制氢技术表现出很好的开发前景。以成本更加低廉的KIO₃替代POMs，对其液相催化电解葡萄糖制氢过程进行探索。研究表明，适宜的预处理温度为80 ℃，预处理时间为4 h；与POMs相比，以KIO₃为催化剂，无需在预处理前后调节溶液的pH值，其工艺更为简单。在最适宜预处理条件下，电解葡萄糖制氢的产氢性能稳定，产氢量与时间成正比，且产氢过程电压稳定。

Pure hydrogen production from electrolysis of glucose catalyzed by potassium iodate

Pure hydrogen produced from electrolysis of biomass catalyzed by polyoxometalates (POMs) is promising. KIO₃ is cheaper than POMs and has been utilized as a catalyst in the electrolysis of glucose to produce pure hydrogen. It is shown that the appropriate pretreatment temperature and pretreatment time are 80 ℃ and 4 h respectively. Using POMs as a catalyst, the solution was adjusted to pH 0.3 before pretreatment, and pH 3 after pretreatment. However, using KIO₃ as a catalyst, it is no need to adjust the pH of the solution. As a result, the process with KIO₃ as a catalyst is simpler than that with POMs. Under suitable pretreatment temperature and time, the electrolysis of glucose is stable. The amount of hydrogen is proportional to the time, and the applied potential keeps almost constant during the hydrogen production process.