CAJ | 학술논문

通过实验研究了正丁烷/氢气/空气混合物在 Pt 催化剂表面上的催化着火特性。实验发现，氢气在正丁烷/空气混合物的催化着火过程中既存在热作用，也存在化学作用。当化学作用为主导时，可燃混合物的化学催化着火温度明显低于热着火温度。实验结果表明，只有当氢气在可燃混合物的含量大于某个临界值时，化学催化着火才能发生，而且该临界值的大小以及催化着火温度均与可燃混合物的当量比有关。
통과실험연구료정정완/경기/공기혼합물재 Pt 최화제표면상적최화착화특성。실험발현，경기재정정완/공기혼합물적최화착화과정중기존재열작용，야존재화학작용。당화학작용위주도시，가연혼합물적화학최화착화온도명현저우열착화온도。실험결과표명，지유당경기재가연혼합물적함량대우모개림계치시，화학최화착화재능발생，이차해림계치적대소이급최화착화온도균여가연혼합물적당량비유관。
An experimental study on catalytic ignition ofn-C4H10/H2/air mixtures in the Pt-coated catalyst surface was conducted. Hydrogen had not only thermal, but also chemical effects on the catalytic ignition of the n-C4H10/air mixtures. The chemical catalytic ignition temperature of the combustible mixtures was obviously lower than thermal ignition when chemical effect was dominant. However, chemical catalytic ignition occurred only when hydrogen content in the combustible mixtures was greater than a critical value. The critical value and the catalytic ignition temperature were related to equivalence ratio of the combustible mixtures.