摘要
采用波长为253.7nm的紫外光为光源,以Na2S溶液为反应液,进行了紫外光气相法分解硫化氢(H2S)制氢反应。考察了H2S通入流量、连续分解硫化氢、不同浓度的H2S、光催化分解H2S及气相分解与液相分解H2S的对比对产氢量的影响。研究结果表明,连续向反应液中通入H2S可以提高产氢量;气相直接分解H2S时,H2S分解的速度和其浓度成正比;气相分解H2S的反应在H2S浓度很高时比液相反应的效率高,在低浓度时,反应效率低于液相反应。
Decomposition of H2S to produce H2 in gas phase was carried out under ultraviolet light with the characteristic wavelength of 253.7nm in Na2S solution. The effects of the successive feed rate of H2S, decomposition of H2S continuously, different concentrations of H2S, photocatalytic decomposition of H2S, the comparison of gas phase and liquid phase to decomposing H2S had studied. The results showed that successive feed of H2S could improve the evolution of H2, the decomposition rate of H2S was proportional to its concentration in liquid phase, the reaction efficiency in gas phase was higher than that in liquid phase when the concentration of H2S was higher, and the result was contrary when the concentration of H2 S was lower.
出处
《应用能源技术》
2011年第1期13-16,共4页
Applied Energy Technology
关键词
紫外光
气相
硫化氢
制氢
Ultraviolet
Gas phase
Hydrogen sulfide
Hydrogen production
