以多级结构一维Ni-Zn纳米棒为催化剂，在固定床装置上对生物质稻壳进行催化热解实验，并对裂解产物及其成分进行分析。重点考察了催化反应温度对热解气体产物及液相产物的影响。研究表明，一维Ni-Zn纳米棒显著提高了催化活性中心Ni的分散度和稳定性，其中Ni纳米粒子尺寸约为11 nm。随着催化温度的升高，焦油产率减少，产气量明显升高，而气体中H₂/CO摩尔比则在催化温度为600℃时达最大值。在优化实验条件下，Ni-Zn催化剂能够显著促进焦油的深度裂解和气体组分调整，有效提高了合成气品质。

One dimensional hierarchically structured Ni-Zn catalyst is synthesized for syngas production from pyrolysis of rice husk in a fixed bed reactor.The resulting gas and liquid products are analyzied by GC and GC/MS.Effect of catalytic reaction temperature on the distribution and yield of products is studied in detail.Study results indicate that the catalyst with higher dispersion and stability is obtained by forming one dimensional nanorod with an average particle size of 11 nm.With the increasing catalytic temperature,tar yield decreases and gas yield enhaces while the maximum ratio of H₂/CO in gases realizes at 600℃.Under the optimized experimental conditions,the synthesized Ni-Zn catalyst can significantly enhance the deep cracking of tar and the adjustment of gas components,and improve effectively the quality of syngas.

周于翔(1993-),男,硕士研究生,研究方向为生物质催化热解,540632262@qq.com