QQ客服 官方微博 反馈留言

	Comparative studies of manganese-doped copper-based catalysts: the promoter effect of Mn on methanol synthesis
	Chen, HY ; Lin, J ; Tan, KL ; Li, J ; Li J(李军)
	1998-12-22
关键词	methanol synthesis Cu/ZnO/Al2O3 Mn promoter supported-Cu-catalyst TPR XPS
英文摘要	A Mn-promoted Cu/ZnO/Al2O3 catalyst with 5-10% improvement in methanol yield as compared with the undoped Cu/ZnO/Al2O3, catalyst under identical conditions has been synthesized. In order to understand the promoter effect of Mn on the methanol production, Cu/Al2O3, and Cu/SiO2, catalysts with and without various amounts of Mn were also prepared and comparatively investigated by microreactor, N2O titration, TPR (Temperature Programmed Reduction) and XPS (X-ray Photoelectron Spectroscopy). Experimental results show that these Mn-promoted catalysts have higher catalytic activity, larger surface Cu concentration, and elevated Cu reduction temperature than their Mn-undoped counterparts. XPS study gives evidence that in the reduced or reacted catalysts, the interaction between Mn and Cu occurs, resulting in the reduction of Mn4+ to Mn2+ or Mn3+, as well as the oxidation of Cu-0 and Cu+ to higher oxidation states. This interaction may be responsible for the harder Cu reduction process, better Cu dispersion, higher active center concentration, and thus enhanced methanol yield. (C) 1998 Elsevier Science B.V.
语种	英语
出版者	ELSEVIER SCIENCE BV
内容类型	期刊论文
源URL	[http://dx.doi.org/10.1016/S0169-4332(97)00692-2]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Chen, HY,Lin, J,Tan, KL,et al. Comparative studies of manganese-doped copper-based catalysts: the promoter effect of Mn on methanol synthesis[J],1998.
APA	Chen, HY,Lin, J,Tan, KL,Li, J,&李军.(1998).Comparative studies of manganese-doped copper-based catalysts: the promoter effect of Mn on methanol synthesis..
MLA	Chen, HY,et al."Comparative studies of manganese-doped copper-based catalysts: the promoter effect of Mn on methanol synthesis".(1998).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。