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用于低温CO甲烷化的纤维素衍生碳负载的高活性铈和镁促进的镍催化剂。

Highly Active Ce- and Mg-Promoted Ni Catalysts Supported on Cellulose-Derived Carbon for Low-Temperature CO Methanation.

作者信息

Tarifa Pilar, Megías-Sayago Cristina, Cazaña Fernando, González-Martín Miguel, Latorre Nieves, Romeo Eva, Delgado Juan José, Monzón Antonio

机构信息

Department of Chemical and Environmental Engineering, Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas (CSIC)-University of Zaragoza, E-50018 Zaragoza, Spain.

Department of Materials Science, Metallurgical Engineering and Inorganic Chemistry, University of Cádiz, E-11510 Puerto Real, Spain.

出版信息

Energy Fuels. 2021 Nov 4;35(21):17212-17224. doi: 10.1021/acs.energyfuels.1c01682. Epub 2021 Sep 1.

DOI:10.1021/acs.energyfuels.1c01682
PMID:35663907
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9161724/
Abstract

The CO methanation performance of Mg- and/or Ce-promoted Ni catalysts supported on cellulose-derived carbon (CDC) was investigated. The samples, prepared by biomorphic mineralization techniques, exhibit pore distributions correlated to the particle sizes, revealing a direct effect of the metal content in the textural properties of the samples. The catalytic performance, evaluated as CO conversion and CH selectivity, reveals that Ce is a better promoter than Mg, reaching higher conversion values in all of the studied temperature range (150-500 °C). In the interval of 350-400 °C, Ni-Mg-Ce/CDC attains the maximum yield to methane, 80%, reaching near 100% CH selectivity. Ce-promoted catalysts were highly active at low temperatures (175 °C), achieving 54% CO conversion with near 100% CH selectivity. Furthermore, the large potential stability of the Ni-Mg-Ce/CDC catalyst during consecutive cycles of reaction opens a promising route for the optimization of the Sabatier process using this type of catalyst.

摘要

研究了负载在纤维素衍生碳（CDC）上的镁和/或铈促进的镍催化剂的CO甲烷化性能。通过生物形态矿化技术制备的样品表现出与颗粒尺寸相关的孔分布，揭示了金属含量对样品织构性质的直接影响。以CO转化率和CH选择性评估的催化性能表明，Ce是比Mg更好的促进剂，在所有研究的温度范围（150 - 500°C）内达到更高的转化率值。在350 - 400°C区间，Ni-Mg-Ce/CDC达到甲烷的最大产率80%，CH选择性接近100%。Ce促进的催化剂在低温（175°C）下具有高活性，实现了54%的CO转化率和接近100%的CH选择性。此外，Ni-Mg-Ce/CDC催化剂在连续反应循环期间的巨大潜在稳定性为使用这种类型催化剂优化萨巴蒂尔过程开辟了一条有前景的途径。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/138632590cdc/ef1c01682_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/b454ba69ef2f/ef1c01682_0001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/82144fdfafa3/ef1c01682_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/491bd8da5955/ef1c01682_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/964f5b410a2d/ef1c01682_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/03de2abc4453/ef1c01682_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/138632590cdc/ef1c01682_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/b454ba69ef2f/ef1c01682_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/24d2cacd34b5/ef1c01682_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/579c6f2c56a4/ef1c01682_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/813a2fdcf12e/ef1c01682_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/82144fdfafa3/ef1c01682_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/491bd8da5955/ef1c01682_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/964f5b410a2d/ef1c01682_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/03de2abc4453/ef1c01682_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e99a/9161724/138632590cdc/ef1c01682_0009.jpg

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Understanding carbon dioxide activation and carbon-carbon coupling over nickel.
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Nat Commun. 2019 Nov 25;10(1):5330. doi: 10.1038/s41467-019-12858-3.
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