Tire pyrolysis char (TPC) was used as a carrier to prepare Ni/TPC catalyst by homogeneous precipitation method.The characteristic of synthetic catalyst was determined by EDX, SEM, XRD, TG and BET.Meanwhile, the performance of Ni/TPC catalyst including reforming temperature, holding time, nickel loading and usage time on the straw pyrolysis gas reforming was investigated in a tube furnace.The results showed that TPC was rich in char and metal.Ni was well loaded on TPC which had a good thermal stability with a specific surface area of 62 m2/g.The Ni/TPC catalyst could obviously improve the burning gas content.The highest catalytic efficiency was obtained at reforming temperature of 750 ℃ and 10 min holding time with 30% Ni loading.The content of H2in the gas was high and relatively increased by 50% after using the catalyst for 850 min.The Ni3ZnC0.7 active component structure converted to FeNi3after long-term used with high and stable catalytic activity.TPC had the ability to be a new type of carrier for nickel catalyst.%以废弃汽车外轮胎热解后的副产物轮胎热解焦(Tyre pyrolysis char,TPC)为原料,利用均匀沉淀法制备以轮胎焦为载体的负载型Ni/TPC催化剂,采用EDX、SEM、XRD、TG、BET手段对催化剂进行了表征与分析,同时使用管式炉测试了Ni/TPC催化剂在秸秆热解燃气重整中的催化性能,并考察了热解温度、保温时间、镍负载量及催化时间对秸秆热解燃气重整效果的影响.研究结果表明,TPC富含焦和金属, Ni/TPC催化剂分散均匀,热稳定性好,比表面积为62 m2/g.催化剂活性测试显示,Ni/TPC催化剂用于作物秸秆热解燃气重整具有很强的催化活性,可显著提高燃气中可燃气体含量;热解温度在750℃、保温时间10 min、30%的Ni负载量时Ni/TPC催化剂的催化效率最高,连续使用850 min后,燃气中的H2含量仍相对提高到50%以上,长时间使用后活性结构由Ni3ZnC0.7转变成FeNi3,催化活性依然较强且趋于稳定,TPC可以作为良好的新型镍基催化剂载体.
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