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修饰剂对 Ni/CeO 和 Ni/LaO 催化剂在液化天然气有氧-蒸汽重整反应中性能的影响。

The Effect of Modifiers on the Performance of Ni/CeO and Ni/LaO Catalysts in the Oxy-Steam Reforming of LNG.

机构信息

Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.

出版信息

Int J Mol Sci. 2021 Aug 23;22(16):9076. doi: 10.3390/ijms22169076.

DOI:10.3390/ijms22169076
PMID:34445779
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8396481/
Abstract

This work interrogates for the first time the catalytic properties of various monometallic Ni catalysts in the oxy-steam reforming of LNG. Various research techniques, including X-ray diffraction (XRD), specific surface area and porosity analysis (BET method), scanning electron microscopy with X-ray microanalysis (SEM-EDS), temperature-programmed desorption of ammonia (TPD-NH), temperature-programmed reduction (TPR-H) and the FTIR method, were used to study their physicochemical properties. The mechanism of the oxy-steam reforming of LNG is also discussed in this paper. The high activity of monometallic catalysts supported on 5% LaO-CeO and 5% ZrO-CeO oxides in the studied process have been proven and explained on the basis of their acidity, specific surface area, sorption properties in relation to the reaction products, the crystallite size of the metallic nickel and their phase composition.

摘要

这项工作首次研究了各种单金属 Ni 催化剂在液化天然气的有氧-蒸汽重整中的催化性能。采用了包括 X 射线衍射（XRD）、比表面积和孔隙率分析（BET 法）、带有 X 射线微分析的扫描电子显微镜（SEM-EDS）、氨程序升温脱附（TPD-NH）、程序升温还原（TPR-H）和傅里叶变换红外光谱（FTIR）在内的多种研究技术来研究它们的物理化学性质。本文还讨论了液化天然气的有氧-蒸汽重整反应的机理。基于单金属催化剂在酸性、比表面积、与反应产物的吸附性能、金属镍的晶粒尺寸及其相组成方面的高活性，证明并解释了负载在 5% LaO-CeO 和 5% ZrO-CeO 氧化物上的单金属催化剂在研究过程中的高活性。

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本文引用的文献

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Materials (Basel). 2020 Dec 8;13(24):5601. doi: 10.3390/ma13245601.
2
The Effect of Exposed Facets of Ceria to the Nickel Species in Nickel-Ceria Catalysts and Their Performance in a NO + CO Reaction.铈暴露晶面对镍铈催化剂中镍物种的影响及其在 NO+CO 反应中的性能。
ACS Appl Mater Interfaces. 2015 Dec 9;7(48):26839-49. doi: 10.1021/acsami.5b09110. Epub 2015 Nov 25.