碳修饰Co/ZrO2催化剂的构筑及在逆水煤气反应中的应用

Construction of Co/ZrO2 catalyst via carbon modification strategy and its application in reverse water gas shift reaction

樊成 ¹常飞祥 ¹俞择修 ¹熊彦茹 ¹钱伟赛 ²王泽哲 ¹魏勤洪¹

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作者信息

1. 浙江海洋大学石油化工与环境学院,浙江舟山 316022
2. 浙江海洋大学船舶与海运学院,浙江舟山 316022
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摘要

通过浸渍法和高温碳化法制备的氮掺杂碳表面修饰的Co/ZrO2催化剂在逆水煤气变换反应(RWGS)中表现出对CO的高选择性.利用多种表征手段对催化剂的结构和电性质进行分析,并探讨了氮掺杂碳的引入对催化剂比表面积、表面碱性和CO选择性的影响.结果表明,Co/ZrO2@NC-3h 700催化剂在对H2吸附解离的同时,保证了充分的CO2吸附,有效地减少了副产物CH4的产生.在600℃苛刻温度条件下,经过24 h活性测试,Co/ZrO2@NC-3h 700催化剂的CO2转化率和CO选择性分别维持在35％和94％,产物CO选择性高于Co/ZrO2.

Abstract

Nitrogen-doped carbon surface modified Co/ZrO2 catalysts prepared by impregnation and high-temperature carbonization methods show high selectivity for CO in reverse water gas shift reaction(RWGS).The structural and electrical properties of the catalyst are analyzed by means of various characterization methods,and the effects of the addition of nitrogen-doped carbon on specific surface area,surface alkalinity and CO selectivity of the catalyst are studied.Studies results show that Co/ZrO2@NC-3h 700 catalyst ensures sufficient CO2 adsorption and effectively reduces the production of CH4 while adsorbing and dissociating H2.The conversion of CO2 and the selectivity of CO over Co/ZrO2@NC-3h 700 catalyst are maintained at 35％and 94％,respectively after 24 h of activity test at 600℃.The selectivity of CO over the catalyst is higher than that over Co/ZrO2.

关键词

逆水煤气/Co/ZrO2催化剂/氮掺杂碳/CO选择性

Key words

reverse water gas shift/Co/ZrO2 catalyst/nitrogen-doped carbon/CO selectivity

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基金项目

国家自然科学基金青年基金(22202180)

出版年

2024

现代化工

中国化工信息中心

现代化工

CSTPCD北大核心

影响因子：0.553

ISSN：0253-4320

参考文献量5

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