Acidity of high-surface-area zirconia prepared from different precipitants

被引：0
|
作者：
Chuah, GK [1 ]
Jaenicke, S [1 ]
Xu, TH [1 ]
机构：
[1] Natl Univ Singapore, Dept Chem, Singapore 119260, Singapore
来源：
SURFACE AND INTERFACE ANALYSIS | 1999年 / 28卷 / 01期
关键词：
zirconia; acidity; Lewis acid sites; Bronsted sites; SIMS;
D O I：
10.1002/(SICI)1096-9918(199908)28:1<131::AID-SIA634>3.0.CO;2-5
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：
High-surface-area zirconia was obtained by digestion of hydrous oxide precipitated with ammonia and sodium hydroxide, The acidity of digested and undigested samples was compared by ammonia temperature-programmed desorption and pyridine adsorption. Undigested zirconia showed only Lewis acid sites but digested samples have Bronsted sites as well. The acid strength of the digested samples was higher than that of undigested samples. This is attributed to the smaller crystallite size, which results in a larger number of highly uncoordinated zirconium ions. Samples prepared from sodium hydroxide contained sodium ions in a surface layer that reduces the acidity of the samples. Copyright (C) 1999 John Wiley & Sons, Ltd.
引用
收藏
页码：131 / 134
页数：4
相关论文
共 50 条
  • [41] Preparation of high-surface-area activated carbon from coconut shell fibers
    Chen, Yong
    Zhou, Liu-Jiang
    Hong, Yu-Zhen
    Cao, Feng
    Li, Ling
    Li, Jian-Bao
    Xinxing Tan Cailiao/ New Carbon Materials, 2010, 25 (02): : 151 - 155
  • [42] HIGH-SURFACE-AREA MESOPOROUS SPINEL FROM A DOUBLE-ALKOXIDE PRECURSOR
    LOPEZ, MRA
    FERNANDEZ, MJT
    CARBONELL, CM
    AREAN, CO
    JOURNAL OF MATERIALS SCIENCE LETTERS, 1993, 12 (20) : 1619 - 1621
  • [43] Preparation of high-surface-area activated carbon from coconut shell fibers
    Chen Yong
    Zhou Liu-jiang
    Hong Yu-zhen
    Cao Feng
    Li Ling
    Li Jian-bao
    NEW CARBON MATERIALS, 2010, 25 (02) : 151 - 155
  • [44] LOW-COST, HIGH-SURFACE-AREA MOFs
    不详
    CHEMICAL & ENGINEERING NEWS, 2012, 90 (23) : 29 - 29
  • [45] Building a better mousetrap: High-surface-area charcoal
    Savitt, DL
    ACADEMIC EMERGENCY MEDICINE, 1997, 4 (03) : 161 - 161
  • [46] Mesoporous high-surface-area activated carbon produced from coconut shell
    Hu, ZH
    Srinivasan, MP
    Ni, YM
    Shi, XF
    ADSORPTION SCIENCE AND TECHNOLOGY, 2000, : 269 - 273
  • [47] A comparative study of the surface structure, acidity, and catalytic performance of tungstated zirconia prepared from crystalline zirconia or amorphous zirconium oxyhydroxide
    Lebarbier, Vanessa
    Clet, Guillaume
    Houalla, Marwan
    JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (28): : 13905 - 13911
  • [48] Thermal degradation of defective high-surface-area UiO-66 in different gaseous environments
    Athar, Muhammad
    Rzepka, Przemyslaw
    Thoeny, Debora
    Ranocchiari, Marco
    van Bokhoven, Jeroen Anton
    RSC ADVANCES, 2021, 11 (61) : 38849 - 38855
  • [49] Ruthenium catalysts supported on high-surface-area zirconia for the catalytic wet oxidation of N,N-dimethyl formamide
    Sun, Guanglu
    Xu, Aihua
    He, Yu
    Yang, Min
    Du, Hongzhang
    Sun, Chenglin
    JOURNAL OF HAZARDOUS MATERIALS, 2008, 156 (1-3) : 335 - 341
  • [50] SURFACE-STRUCTURE AND COMPOSITION OF HIGH-SURFACE-AREA MOLYBDENUM NITRIDES
    DEMCZYK, BG
    CHOI, JG
    THOMPSON, LT
    APPLIED SURFACE SCIENCE, 1994, 78 (01) : 63 - 69
12345