Thermally induced phase transformation on 12-tungstophosphoric acid/ZrO2 sol-gel

被引：8
作者：
Hernández-Cortéz, JG
López, T
Manríquez, ME
Gómez, R
Navarrete, J
机构：
[1] Univ Autonoma Metropolitana Iztapalapa, Dept Quim, Mexico City 09340, DF, Mexico
[2] Inst Mexicano Petr, Mexico City 007730, DF, Mexico
来源：
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2003年 / 26卷 / 1-3期
关键词：
tungstophosphoric acid; sol-gel synthesis; ZrO2; sol-gel; ZrO2NH3-TPD; FTIR pyridine adsorption on ZrO2; Raman spectroscopy on sol-gel ZrO2;
D O I：
10.1023/A:1020794914686
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Zirconium (IV)-n-butoxide and tungstophosphoric acid (WP) were co-gelled at pH 3, 5 and 7 with HCl acid, C2H4O2 acid and NH4OH, respectively. Pyridine adsorption bands at 1610 and 1442 cm(-1) corresponding to Lewis acidic sites were observed by FTIR spectroscopy. Acidity determined by ammonia thermodesorption shows values around 1100 mumol of NH3/g, which correspond to solids showing super acidity. It was found that the incorporation of WP to gelling zirconia delay the formation of tetragonal zirconia. Raman spectroscopy shows the stabilization of the Keggin structure on zirconia thermally treated at 400degreesC.
引用
收藏
页码：213 / 216
页数：4
相关论文
共 50 条
  • [41] Elaboration and characterization of sol-gel derived ZrO2 thin films treated with hot water
    Soo, Mun Teng
    Prastomo, Niki
    Matsuda, Atsunori
    Kawamura, Go
    Muto, Hiroyuki
    Noor, Ahmad Fauzi Mohd
    Lockman, Zainovia
    Cheong, Kuan Yew
    [J]. APPLIED SURFACE SCIENCE, 2012, 258 (13) : 5250 - 5258
  • [42] Impact of Device Area and Film Thickness on Performance of Sol-Gel Processed ZrO2 RRAM
    Lee, Sojeong
    Kim, Taegyun
    Jang, Bongho
    Lee, Won-Yong
    Song, Kyu Chan
    Kim, Hyun Seo
    Do, Gyung Yeop
    Hwang, Seung Bum
    Chung, Seungjun
    Jang, Jaewon
    [J]. IEEE ELECTRON DEVICE LETTERS, 2018, 39 (05) : 668 - 671
  • [43] Sol-gel processing for epitaxial growth of ZrO2 thin films on Si(100) wafers
    Bae, SY
    Choi, HS
    Choi, SY
    Oh, YJ
    [J]. CERAMICS INTERNATIONAL, 2000, 26 (02) : 213 - 214
  • [44] Phase transformation in sol-gel titania containing silica
    Kumar, SR
    Suresh, C
    Vasudevan, AK
    Suja, NR
    Mukundan, P
    Warrier, KGK
    [J]. MATERIALS LETTERS, 1999, 38 (03) : 161 - 166
  • [45] Phase transformation study of sol-gel precursors of mullite
    Liu, RY
    Zhu, ZS
    Zhang, AB
    Fang, QQ
    [J]. MECHANICS AND MATERIAL ENGINEERING FOR SCIENCE AND EXPERIMENTS, 2001, : 226 - 229
  • [46] Influence of pH value and solvent utilized in the sol-gel synthesis on properties of derived ZrO2 powders
    Caruso, R
    de Sanctis, O
    Macías-García, A
    Benavidez, E
    Mintzer, SR
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2004, 152 (03) : 299 - 303
  • [47] Optical enhancement of Au doped ZrO2 thin films by sol-gel dip coating method
    Berlin, I. John
    Joy, K.
    [J]. PHYSICA B-CONDENSED MATTER, 2015, 457 : 182 - 187
  • [48] Fabrication and Characterization of Y-doped ZrO2 Nanofiltration Membranes by Aqueous Sol-Gel Process
    Da Xiao-Wei
    Qiu Ming-Hui
    Fan Yi-Qun
    [J]. JOURNAL OF INORGANIC MATERIALS, 2016, 31 (06) : 621 - 626
  • [49] Structural and optical characterization of ZrO2:CeO2 slab waveguides obtained via sol-gel
    Rey-Garcia, F.
    Flores-Arias, M. T.
    Gomez-Reino, C.
    De La Fuente, G. F.
    Assenmacher, W.
    Mader, W.
    Berneschi, S.
    Pelli, S.
    Nunzi-Conti, G.
    Righini, G. C.
    [J]. OPTICAL MATERIALS, 2012, 35 (02) : 97 - 101
  • [50] Sol-gel derived TiO2:ZrO2 multilayer thin films for humidity sensing application
    Biju, Kuyyadi P.
    Jain, Mahaveer K.
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2008, 128 (02) : 407 - 413
12345