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Title: 3D printed hierarchical spinel monolithic catalysts for highly efficient semi-hydrogenation of acetylene
Authors: Yuan, Zijian
Liu, Lu
Ru, Wei
Zhou, Daojin
Kuang, Yun
Feng, Junting
Liu, Bin
Sun, Xiaoming
Keywords: Engineering::Chemical engineering
Issue Date: 2022
Source: Yuan, Z., Liu, L., Ru, W., Zhou, D., Kuang, Y., Feng, J., Liu, B. & Sun, X. (2022). 3D printed hierarchical spinel monolithic catalysts for highly efficient semi-hydrogenation of acetylene. Nano Research, 15(7), 6010-6018.
Journal: Nano Research
Abstract: Porous monolithic catalysts with high specific surface areas, which can not only facilitate heat/mass transfer, but also help to expose active sites, are highly desired in strongly exothermic or endothermic gas-solid phase reactions. In this work, hierarchical spinel monolithic catalysts with a porous woodpile architecture were fabricated via extrusion-based three-dimensional (3D) printing (direct ink writing, DIW in brief) of aluminate-intercalated layered double hydroxide (AI-LDH) followed by low temperature calcination. The intercalation of aluminate in LDH is found crucial to tailor the M2+/Al3+ ratio, integrate LDH nanosheets into monolithic catalyst, and enable the conversion of LDH to spinel at the temperature as low as 500 °C with high specific surface areas (> 350 m2/g). The rapid mass/heat transfer resulted from the versatile 3D network at macroscale and the highly dispersed and fully exposed active sites benefited from the porous structure at microscale endow the 3D-printed Pd loaded spinel MgAl-mixed metal oxide (3D-AI-Pd/MMO) catalyst with excellent catalytic performance in semi-hydrogenation of acetylene, achieving 100% conversion at 60 °C with more than 84% ethylene selectivity.
ISSN: 1998-0124
DOI: 10.1007/s12274-022-4291-9
Rights: © 2022 Tsinghua University Press. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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