Effect of aprotic solvent on characteristics of Al2O3 ceramic hollow fiber substrates prepared by phase inversion for hydrogen permeation applications

IF 2.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Asian Ceramic Societies Pub Date : 2022-07-03 DOI:10.1080/21870764.2022.2104712

E. Magnone, Seung Hwan Lee, M. Shin, X. Zhuang, Jae Yeon Hwang, Jeong In Lee, J. Park

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引用次数: 1

Abstract

ABSTRACT The phase inversion procedure was used to prepare Al2O3 ceramic hollow fiber substrates (AlCHFS) utilizing the dimethyl sulfoxide (DMSO), N,N-dimethylacetamide (DMAC), and 1-methyl-2-pyrrolidone (NMP) aprotic solvents. Different aprotic solvent and non-solvent (water) interactions were used to calibrate different ceramic oxide substrates. AlCHFS with an asymmetrical structure consisting of a finger-like structure on the lumen side and a pore structure on the shell side was obtained using an aprotic solvent/non-solvent pair with a high total Hildebrand solubility (δt). As the aprotic strength was reduced, the finger-like structure on the shell sides became more prominent. Hydrogen permeation studies conducted between 350°C and 450°C reveal that the Pd-coated AlCHFS produced from DMAC aprotic solvent has the maximum hydrogen flux (~0.24 mol m−2 s−1). The activation energy for the thermally activated hydrogen transport process through the Pd-coated AlCHFSs is determined to be around 11.06–14.61 kJ mol−1 in the temperature range of 350°C to 450°C, and it increases linearly with increasing surface porosity of ceramic oxide substrate.

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非质子溶剂对相转化法制备Al2O3陶瓷中空纤维基板性能的影响

采用相转化法，以二甲亚砜(DMSO)、N,N-二甲基乙酰胺(DMAC)和1-甲基-2-吡咯烷酮(NMP)为非质子溶剂，制备了Al2O3陶瓷中空纤维衬底(AlCHFS)。不同的非质子溶剂和非溶剂(水)相互作用被用来校准不同的陶瓷氧化物衬底。采用非质子溶剂/非溶剂对，获得了具有高总希尔德布兰德溶解度(δt)的不对称结构AlCHFS，该结构由管腔侧的指状结构和壳侧的孔结构组成。随着非质子强度的降低，壳侧的指状结构变得更加突出。在350 ~ 450℃间进行的氢渗透实验表明，DMAC非质子溶剂制备的pd包被AlCHFS具有最大的氢通量(~0.24 mol m−2 s−1)。在350℃~ 450℃的温度范围内，钯包覆AlCHFSs热活化氢输运过程的活化能约为11.06 ~ 14.61 kJ mol−1，随着陶瓷氧化物衬底表面孔隙率的增加，活化能呈线性增加。

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来源期刊

Journal of Asian Ceramic Societies Materials Science-Ceramics and Composites

CiteScore

5.00

自引率

4.30%

发文量

审稿时长

10 weeks

期刊介绍： The Journal of Asian Ceramic Societies is an open access journal publishing papers documenting original research and reviews covering all aspects of science and technology of Ceramics, Glasses, Composites, and related materials. These papers include experimental and theoretical aspects emphasizing basic science, processing, microstructure, characteristics, and functionality of ceramic materials. The journal publishes high quality full papers, letters for rapid publication, and in-depth review articles. All papers are subjected to a fair peer-review process.