NiCeO2-ZrO2@SiO2核壳结构型催化剂对甲苯催化重整研究

NiCeO2-ZrO2@SiO2核壳结构型催化剂对甲苯催化重整研究
摘要：摘要本文通过结构导向法制备一系列不同壳层厚度的Ni/Ce-ZrO2@SiO2催化剂，并将其应用到生物质焦油模型甲苯的蒸汽重整反应中。采用XRD、SEM、TEM和XPS等对催化剂的形貌及结构进行表征。结果显示，多孔SiO2层的存在能显著提高催化剂的性能，能通过修饰Ni的能带结构，改善Ni的本征活性并改变产物分布。SiO2壳层厚度对催化剂的性能也有影响，在一系列不同壳层厚度的Ni/Ce-ZrO2@SiO2催化剂中，壳–核质量比为0.5的催化剂表现出最高的催化活性，该催化剂在650℃和700℃下对甲苯的催化转化率分别为62%和85%。

Abstract:：A series of Ni/CeO2-ZrO2@SiO2 core-shell catalysts with different mass ratio of shell to core were prepared and utilized to steam reforming of toluene. XRD, SEM, TEM and XPS were applied to characterize the morphology and structure of the catalysts. Results showed that, the catalytic activity of Ni/CeO2-ZrO2@SiO2 was significantly improved compared to Ni/CeO2-ZrO2, the coated SiO2 layer can changed the binding energy of Ni, which modified the activity of Ni and changed the products distribution. The thickness of silica layer was also proved to influence the catalytic performance, core-shell structure with shell-to-core mass ratio of 0.5 showed the highest catalytic activity, its toluene conversion were 62% and 85% respectively under 650℃ and 700℃.

中文标题：NiCeO2-ZrO2@SiO2核壳结构型催化剂对甲苯催化重整研究
英文标题：Catalytic Activity of Ni/CeO2-ZrO2@SiO2 Core-Shell Structure for Steam Reforming of Toluene
发表时间：2017-04-18

作者：
赵效勇，闫常峰，张  亮
作者简介：
赵效勇（1983-），男，博士研究生，主要从事纳米催化材料的研究。

关键词：核-壳催化剂,生物焦油,甲苯,蒸汽重整,
Key words：core-shell catalyst,biomass tar,toluene,steam reforming,

2025-1-18 20:27 上传 NiCeO2-ZrO2@SiO2核壳结构型催化剂对甲苯催化重整研究.pdf

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