Low-Temperature Fabrication of Plate-like α-Al2O3 with Less NH4F Additive

被引：1

作者：

Chen, Haiyang ^{[1
]}

Li, Bin ^{[1
]}

Liu, Meng ^{[1
]}

Yang, Xue ^{[2
]}

Liu, Jie ^{[1
]}

Qin, Tingwei ^{[1
]}

Xue, Zejian ^{[1
]}

Xing, Yun ^{[1
]}

Chen, Junhong ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[2] Hebei Univ Architecture, Sch Civil & Engn, Zhangjiakou 075000, Peoples R China

来源：

MATERIALS | 2023年 / 16卷 / 12期

关键词：

plate-like alpha-Al2O3; low temperature; oxalic acid; NH4F; synergistic effect; PHASE-TRANSFORMATION; ULTRAFINE ALUMINA; GAMMA-ALUMINA; ALF3; SURFACE; TRANSITION; BOEHMITE; POWDER; GROWTH; VAPOR;

D O I：

10.3390/ma16124415

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fluorinated compounds are effective mineralization agents for the fabrication of plate-like alpha-Al2O3. However, in the preparation of plate-like a-Al2O3, it is still an extremely challenging task to reduce the content of fluoride while ensuring a low synthesis temperature. Herein, oxalic acid and NH4F are proposed for the first time as additives in the preparation of plate-like alpha-Al2O3. The results showed that plate-like a-Al2O3 can be synthesized at a low temperature of 850 degrees C with the synergistic effect of oxalic acid and 1 wt.% NH4F. Additionally, the synergistic effect of oxalic acid and NH4F not only can reduce the conversion temperature of alpha-Al2O3 but also can change the phase transition sequence.

引用

页数：11

共 50 条

[31] MnFe/Al2O3 Catalyst Synthesized by Deposition Precipitation for Low-Temperature Selective Catalytic Reduction of NO with NH3
Leonhard Schill
Siva Sankar Reddy Putluru
Anker Degn Jensen
Rasmus Fehrmann
Catalysis Letters, 2015, 145 : 1724 - 1732
[32] Low-temperature mechanochemical-thermal synthesis of α-Al2O3 nanocrystals
Billik, P.
Caplovicova, M.
Turanyi, T.
Caplovic, L.
Horvath, B.
MATERIALS RESEARCH BULLETIN, 2011, 46 (11) : 2135 - 2140
[33] Low-Temperature Atomic Layer Deposition of α-Al2O3 Thin Films
Aarik, Lauri
Mandar, Hugo
Ritslaid, Peeter
Tarre, Aivar
Kozlova, Jekaterina
Aarik, Jaan
CRYSTAL GROWTH & DESIGN, 2021, 21 (07) : 4220 - 4229
[34] LOW-TEMPERATURE DIFFUSION IN INERT-GAS BOMBARDED AL2O3
JECH, C
KELLY, R
JOURNAL OF NUCLEAR MATERIALS, 1966, 20 (03) : 269 - &
[35] Pathway for a low-temperature deposition of α-Al2O3: A molecular dynamics study
Houska, Jiri
SURFACE & COATINGS TECHNOLOGY, 2013, 235 : 333 - 341
[36] Low-temperature combustion of methane using PdO/Al2O3 catalyst: Influence of crystalline phase of Al2O3 support
Park, Jung-Hyun
Ahn, Ji-Hye
Sim, Hye-In
Seo, Gon
Han, Hyun Sik
Shin, Chae-Ho
CATALYSIS COMMUNICATIONS, 2014, 56 : 157 - 163
[37] Preparation of α-Al2O3 by low-temperature calcining γ-Al2O3 with α-phase seed in-situ obtained by ball milling
Su, Jianhui
Liu, Yan
Peng, Xiujing
Sun, Guoxin
Jiang, Xuchuan
MATERIALS TODAY COMMUNICATIONS, 2023, 36
[38] Fabrication of porous Al2O3/ZrO2(Y2O3) ceramics from low-temperature combustion sintering method
Bai, Jia-Hai, 1734, Chinese Ceramic Society (43):
[39] Preparation of plate-like α-Al2O3 particles in Na2SO4 flux using coal fly ash as starting materials
Tan, H. B.
MATERIALS TECHNOLOGY, 2011, 26 (02) : 87 - 89
[40] Low-temperature deposition of α-Al2O3 film using Al+α-Al2O3 composite target by radio frequency magnetron sputtering
Cheng, Yitian
Qiu, Wanqi
Zhou, Kesong
Yang, Yu
Jiao, Dongling
Liu, Zhongwu
Zhong, Xichun
MATERIALS RESEARCH EXPRESS, 2019, 6 (08):

← 1 2 3 4 5 →