氮掺杂碳材料中氮物种的调控及其负载Pd催化剂在加氢反应中的应用

被引：2

作者：

项梦

徐斌

韩文锋

李瑛

刘化章

唐浩东

岑亚青

机构：

[1] 浙江工业大学催化研究所

来源：

化学反应工程与工艺 | 2018年 / 34卷 / 01期

关键词：

氮掺杂碳; 氮物种; 调控; Pd催化剂; 直接加氢; 加氢脱氯; 锚定作用;

D O I：

暂无

中图分类号：

O643.36 [催化剂];

学科分类号：

摘要：

介绍了氮掺杂碳材料中氮物种的调控方法,通过改变氮源添加量、氮源种类和焙烧温度能够对氮含量进行调控。通过原位合成法、后处理法以及改变反应条件（主要指焙烧温度和焙烧时间）能够对氮类型进行调控。原位合成法和后处理法制备的氮掺杂碳材料分别以石墨型氮和吡啶型氮为主。随着焙烧温度升高,焙烧时间延长,氮含量逐渐降低,石墨型氮占比上升。氮掺杂碳载体（N-C）负载Pd催化剂（Pd/N-C）在直接加氢和液相加氢脱氯反应中的应用方面,介绍了氮掺杂碳载体通过自身特性及其对Pd的锚定作用和电子影响来提高加氢性能,综合分析发现,氮掺杂碳载体增强了Pd/N-C催化剂与溶剂以及反应物的相互作用力;对Pd的锚定作用加强,提高了Pd/N-C催化剂的分散度和稳定性并改变了Pd0/Pd2+的比例。

引用

页码：73 / 82

页数：10

共 25 条

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