In this work,the effects of pyrolysis temperature and Fe,Fe-Ca,Fe-Ca-Ce catalysts and loadings on the pyrolysis of hawthorn residue as raw material were investigated in a fixed-bed reactor,and the effects of impregnation and co-precipitation methods on the yield of pyrolysis gas were studied.The results showed that the H2 increased from 10.40 mL/g to 27.64 mL/g when the pyrolysis temperature increased from 500℃to 700℃,and the H2 yield increased from 27.64 mL/g to 46.16 mL/g when the Fe loading was 7 wt.%.The addition of Ca to Fe effectively increased the H2 yield,and when the Ca loading increased to 2.0 wt.%,the H2 yield increased to 69.53 mL/g.The preparation of Fe and Fe-Ca catalysts by co-precipitation method was beneficial to reduce the CO2 yield.However,the H2 yield decreased from 69.53 mL/g to 50.18 mL/g after the addition of Ce in Fe-Ca.
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