Effect of Micro Amount of Fe3+ on Thermal Explosion Decomposition of Hydrogen Peroxide

摘要：

The effect of micro amount of Fe 3+ (12.7 mg/L) on thermal explosion decomposition of 30(wt.)％ H2O2 has been investigated by using accelerating rate calorimeter (ARC). The results indicate that adding in micro amount of Fe3+ in 30(wt.)％ H2O2 makes the self-decomposition reaction (SDR) of H2O2 occur slowly, which results in a longer SDR time (592.10 min) and lower SDR maximum temperature rise rate (2.674 ℃·min-1) comparing with those of pure 30(wt.)％ H2O2, whose SDR time and maximum temperature rise rate are 266.78 min and 11.428 ℃·min~1, respectively. But, when decompose at the same temperature, 30(wt.)％ H2O2 containing micro amount of Fe3+ produces a higher pressure than that of pure 30(wt.)％ H2O2. Besides, the existence of micro amount of Fe3+ makes the endothermic phenomenon occurred during H2O2 decomposition take place at lower temperature (58 ℃), and this temperature for pure 30(wt.)％ H2O2 is 75 ℃. In addition, during the decomposition of pure 30(wt.)％ H2O2, the relationship of sample pressure and control temperature is a little curved line, which can be fitted to three beelines as the following: (1) y1 = 3.486x1 -8.671 (37.64 ℃≤ x1 ≤80.00 ℃), (2) y2 = 4.273x2 -61.272 (80.00 ℃ < x2 ≤121.00 ℃), (3) y3 = 5.609x3-200.00 (121.00 ℃ < x3 ≤150.40 ℃); while for 30(wt.)％ H2O2 containing micro amount of Fe3+, the sample pressure and control temperature present a linear relation, which can be written as y = 5.681x205.299 (41.69 ℃≤x ≤131.80 ℃). Furthermore, the existence of micro amount of Fe3+ has obvious catalytic action for H2O2 decomposition, and make the Ea of H2O2 decomposition reaction decrease distinctly at lower temperature (40-75 ℃), as can lead to the H2O2 decomposition occur easily at low temperature and then increase the explosion hazard of 30(wt.)％ H2O2.

关键词： hydrogen peroxide thermal explosive decomposition accelerating rate calorimeter adiabatic analysis

作者: LIU Huiping ZHU Peng ZHOU Bo LIU Zhangrui LIU Yingxue

作者单位: School of Urban Construction and Safety Engineering, Shanghai Institute of Technology, Shanghai 2002 School of Marine Environment and Safety Engineering, Shanghai Maritime University, Shanghai 201306,

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1023-1029

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）