Contrary to conventional methane dry reforming on metallic catalyst using electric heating, dry reforming catalyzed by biomass-derived char with microwave heating was studied in this work. The results showed bio-char catalytic activity could be affected by raw material for char preparation, since it was greatly connected to the remained metal after char preparation. As a whole, cotton stalk char presented better activity than others. Bio-char with a particle size in 0.25–0.83 mm was suitable for being served as the catalyst. Supporting an appropriate additive on bio-char, particularly for Ni, was effective to improve bio-char catalytic ability. Original bio-char could only maintain its catalytic effect at an acceptable level in 70 min, due to an unavoidable carbon gasification reaction. Nevertheless, carbon gasification meanwhile generated part of CO production and it was a contributor to total syngas production. When applying original bio-char for the reforming reaction, the contribution of char-derived CO production to total syngas production was finally up to 10.2%. Deposited bio-char obtained from methane decomposition could be self-regenerated, when further using for dry reforming. No matter original bio-char or deposited bio-char was adopted, a noticeable decrease of H₂/CO ratio passed through the test. For example, the ratio achieved on original bio-char reduced from 0.88 to 0.71. Through carbon balance and direct weight measurement, it was obtained a loss by 8.3% was occurred on original bio-char after the test.

与传统的电加热在金属催化剂上进行甲烷干重整相反，本研究研究了生物质衍生的焦炭在微波加热下的干重整。结果表明，生物炭的催化活性可能受制炭原料的影响，因为它与制炭后残留的金属有很大的联系。总体而言，棉秆炭表现出比其他更好的活性。粒径在0.25-0.83 mm的生物炭适合用作催化剂。在生物炭上负载适当的添加剂，特别是对于镍，可以有效提高生物炭的催化能力。由于不可避免的碳气化反应，原始生物炭只能在70分钟内将其催化作用保持在可接受的水平。尽管如此，碳气化同时产生了一部分CO生产，这是合成气总产量的一个来源。当将原始生物炭用于重整反应时，焦炭衍生的CO产量对合成气总产量的贡献最终达到10.2％。当进一步用于干法重整时，由甲烷分解获得的沉积生物炭可以自我再生。无论采用原始生物炭还是沉积生物炭，H的显着降低₂ / CO比通过了测试。例如，原始生物炭的比例从0.88降低到0.71。通过碳平衡和直接重量测量，测试后原始生物炭损失了8.3％。