A new green process to produce activated alumina by spray pyrolysis
A green process that uses the spray pyrolysis method to prepare activated alumina is proposed in this research. The effects of spray temperature, carrier gas pressure, and AlCl3 solution concentration are experimentally investigated using pure reagents. The products were characterized by X-ray diffr...
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Online Access: | https://doi.org/10.1515/gps-2017-0078 |
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doaj-ac4b318824764c26bd178387b216a1052021-10-02T17:47:47ZengDe GruyterGreen Processing and Synthesis2191-95422191-95502018-10-017546446910.1515/gps-2017-0078A new green process to produce activated alumina by spray pyrolysisLong Wang0Ting-an Zhang1Guozhi Lv2Weiguang Zhang3Yan Liu4Zhihe Dou5Liping Niu6Key Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, School of Metallurgy, Shenyang, ChinaKey Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, School of Metallurgy, Shenyang 110819, ChinaKey Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, School of Metallurgy, Shenyang, ChinaKey Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, School of Metallurgy, Shenyang, ChinaKey Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, School of Metallurgy, Shenyang, ChinaKey Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, School of Metallurgy, Shenyang, ChinaKey Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, School of Metallurgy, Shenyang, ChinaA green process that uses the spray pyrolysis method to prepare activated alumina is proposed in this research. The effects of spray temperature, carrier gas pressure, and AlCl3 solution concentration are experimentally investigated using pure reagents. The products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and specific surface area (BET) analyses. The results indicate that the spray temperature is the most important factor on the conversion ratio of alumina during the spray pyrolysis process. The conversion ratio of alumina achieved over 99% at the following optimal conditions: temperature of 1000°C, pressure of 0.3 MPa, and AlCl3 solution concentration of 10 wt%. The activated alumina with 8–20 nm particle size (γ-Al2O3+α-Al2O3) was prepared using the same process, which well met the requirement of the catalyst carrier. The green utilization of high-alumina fly ash and acid recycling can be achieved by using this process.https://doi.org/10.1515/gps-2017-0078activated aluminaorthogonal testphase transformationpore structurespray pyrolysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Long Wang Ting-an Zhang Guozhi Lv Weiguang Zhang Yan Liu Zhihe Dou Liping Niu |
spellingShingle |
Long Wang Ting-an Zhang Guozhi Lv Weiguang Zhang Yan Liu Zhihe Dou Liping Niu A new green process to produce activated alumina by spray pyrolysis Green Processing and Synthesis activated alumina orthogonal test phase transformation pore structure spray pyrolysis |
author_facet |
Long Wang Ting-an Zhang Guozhi Lv Weiguang Zhang Yan Liu Zhihe Dou Liping Niu |
author_sort |
Long Wang |
title |
A new green process to produce activated alumina by spray pyrolysis |
title_short |
A new green process to produce activated alumina by spray pyrolysis |
title_full |
A new green process to produce activated alumina by spray pyrolysis |
title_fullStr |
A new green process to produce activated alumina by spray pyrolysis |
title_full_unstemmed |
A new green process to produce activated alumina by spray pyrolysis |
title_sort |
new green process to produce activated alumina by spray pyrolysis |
publisher |
De Gruyter |
series |
Green Processing and Synthesis |
issn |
2191-9542 2191-9550 |
publishDate |
2018-10-01 |
description |
A green process that uses the spray pyrolysis method to prepare activated alumina is proposed in this research. The effects of spray temperature, carrier gas pressure, and AlCl3 solution concentration are experimentally investigated using pure reagents. The products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and specific surface area (BET) analyses. The results indicate that the spray temperature is the most important factor on the conversion ratio of alumina during the spray pyrolysis process. The conversion ratio of alumina achieved over 99% at the following optimal conditions: temperature of 1000°C, pressure of 0.3 MPa, and AlCl3 solution concentration of 10 wt%. The activated alumina with 8–20 nm particle size (γ-Al2O3+α-Al2O3) was prepared using the same process, which well met the requirement of the catalyst carrier. The green utilization of high-alumina fly ash and acid recycling can be achieved by using this process. |
topic |
activated alumina orthogonal test phase transformation pore structure spray pyrolysis |
url |
https://doi.org/10.1515/gps-2017-0078 |
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