化工进展2024，Vol.43Issue(3)：1456-1465,10.DOI:10.16085/j.issn.1000-6613.2023-0498
石墨烯复合载体催化剂在柴油车尾气NO脱除中的应用
Application of graphene composite supported catalyst in the removal of NO from diesel exhaust
摘要
Abstract
Ammonia selective catalytic reduction method(NH3-SCR)is conducive to NO removal from diesel exhaust.In order to suit the conditions and temperature of diesel vehicle tail gas,a NH3-SCR catalyst with graphene and TiO2 composite support was prepared.The following conclusions were obtained through the catalytic activity evaluation of NH3-SCR,XRD,SEM,BET and H2-TPR characterizations.For TiO2 supported catalyst,high content of Ce was beneficial to improve the catalytic activity of NH3-SCR and widen the activity temperature range,while the active component Fe was helpful to its low temperature activity.For the graphene supported catalyst,the active component Ce had better catalytic activity,but Fe was more favorable to high temperature activity.For denitrification catalyst with TiO2 and graphene composite supports,the catalytic activity temperature range was further widened and the powder phenomenon was improved in the catalyst reaction process,but the catalytic activity decreased slightly,among which Fe0.1Ce0.4Ti/10%GR catalyst had the best NH3-SCR activity and NO conversion reached more than 90%in the temperature range of 220-450℃.关键词
柴油车尾气/石墨烯/复合载体/选择性催化还原/催化剂Key words
diesel exhaust/graphene/composite carrier/SCR/catalyst分类
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闫守成,张慧华,徐倩倩,王煜坤..石墨烯复合载体催化剂在柴油车尾气NO脱除中的应用[J].化工进展,2024,43(3):1456-1465,10.基金项目
河南省高等学校重点科研项目(23A460030) （23A460030）
河南省科技发展计划(162102110129). （162102110129）
