Hydrogen Generation from Catalytic Steam Reforming of Acetic Acid by Ni/Attapulgite Catalysts
In this research, catalytic steam reforming of acetic acid derived from the aqueous portion of bio-oil for hydrogen production was investigated using different Ni/ATC (Attapulgite Clay) catalysts prepared by precipitation, impregnation and mechanical blending methods. The fresh and reduced catalysts...
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doaj-b8defc5c6d094594a14fa318586ce52b2020-11-24T23:24:27ZengMDPI AGCatalysts2073-43442016-11-0161117210.3390/catal6110172catal6110172Hydrogen Generation from Catalytic Steam Reforming of Acetic Acid by Ni/Attapulgite CatalystsYishuang Wang0Mingqiang Chen1Tian Liang2Zhonglian Yang3Jie Yang4Shaomin Liu5School of Earth Science and Environmental Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth Science and Environmental Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth Science and Environmental Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaIn this research, catalytic steam reforming of acetic acid derived from the aqueous portion of bio-oil for hydrogen production was investigated using different Ni/ATC (Attapulgite Clay) catalysts prepared by precipitation, impregnation and mechanical blending methods. The fresh and reduced catalysts were characterized by XRD, N2 adsorption–desorption, TEM and temperature program reduction (H2-TPR). The comprehensive results demonstrated that the interaction between active metallic Ni and ATC carrier was significantly improved in Ni/ATC catalyst prepared by precipitation method, from which the mean of Ni particle size was the smallest (~13 nm), resulting in the highest metal dispersion (7.5%). The catalytic performance of the catalysts was evaluated by the process of steam reforming of acetic acid in a fixed-bed reactor under atmospheric pressure at two different temperatures: 550 °C and 650 °C. The test results showed the Ni/ATC prepared by way of precipitation method (PM-Ni/ATC) achieved the highest H2 yield of ~82% and a little lower acetic acid conversion efficiency of ~85% than that of Ni/ATC prepared by way of impregnation method (IM-Ni/ATC) (~95%). In addition, the deactivation catalysts after reaction for 4 h were analyzed by XRD, TGA-DTG and TEM, which demonstrated the catalyst deactivation was not caused by the amount of carbon deposition, but owed to the significant agglomeration and sintering of Ni particles in the carrier.http://www.mdpi.com/2073-4344/6/11/172hydrogen productionsteam reformingNi/Attapulgitecatalysts deactivationagglomeration and sintering |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yishuang Wang Mingqiang Chen Tian Liang Zhonglian Yang Jie Yang Shaomin Liu |
spellingShingle |
Yishuang Wang Mingqiang Chen Tian Liang Zhonglian Yang Jie Yang Shaomin Liu Hydrogen Generation from Catalytic Steam Reforming of Acetic Acid by Ni/Attapulgite Catalysts Catalysts hydrogen production steam reforming Ni/Attapulgite catalysts deactivation agglomeration and sintering |
author_facet |
Yishuang Wang Mingqiang Chen Tian Liang Zhonglian Yang Jie Yang Shaomin Liu |
author_sort |
Yishuang Wang |
title |
Hydrogen Generation from Catalytic Steam Reforming of Acetic Acid by Ni/Attapulgite Catalysts |
title_short |
Hydrogen Generation from Catalytic Steam Reforming of Acetic Acid by Ni/Attapulgite Catalysts |
title_full |
Hydrogen Generation from Catalytic Steam Reforming of Acetic Acid by Ni/Attapulgite Catalysts |
title_fullStr |
Hydrogen Generation from Catalytic Steam Reforming of Acetic Acid by Ni/Attapulgite Catalysts |
title_full_unstemmed |
Hydrogen Generation from Catalytic Steam Reforming of Acetic Acid by Ni/Attapulgite Catalysts |
title_sort |
hydrogen generation from catalytic steam reforming of acetic acid by ni/attapulgite catalysts |
publisher |
MDPI AG |
series |
Catalysts |
issn |
2073-4344 |
publishDate |
2016-11-01 |
description |
In this research, catalytic steam reforming of acetic acid derived from the aqueous portion of bio-oil for hydrogen production was investigated using different Ni/ATC (Attapulgite Clay) catalysts prepared by precipitation, impregnation and mechanical blending methods. The fresh and reduced catalysts were characterized by XRD, N2 adsorption–desorption, TEM and temperature program reduction (H2-TPR). The comprehensive results demonstrated that the interaction between active metallic Ni and ATC carrier was significantly improved in Ni/ATC catalyst prepared by precipitation method, from which the mean of Ni particle size was the smallest (~13 nm), resulting in the highest metal dispersion (7.5%). The catalytic performance of the catalysts was evaluated by the process of steam reforming of acetic acid in a fixed-bed reactor under atmospheric pressure at two different temperatures: 550 °C and 650 °C. The test results showed the Ni/ATC prepared by way of precipitation method (PM-Ni/ATC) achieved the highest H2 yield of ~82% and a little lower acetic acid conversion efficiency of ~85% than that of Ni/ATC prepared by way of impregnation method (IM-Ni/ATC) (~95%). In addition, the deactivation catalysts after reaction for 4 h were analyzed by XRD, TGA-DTG and TEM, which demonstrated the catalyst deactivation was not caused by the amount of carbon deposition, but owed to the significant agglomeration and sintering of Ni particles in the carrier. |
topic |
hydrogen production steam reforming Ni/Attapulgite catalysts deactivation agglomeration and sintering |
url |
http://www.mdpi.com/2073-4344/6/11/172 |
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