Bisphenol A Imprinted SiO2‐ZrO2 Mixed Oxide Materials Prepared by Acetic Anhydride Sol‐Gel Method

2007 ◽  
Vol 37 (10) ◽  
pp. 771-777 ◽  
Author(s):  
Masahiro Fujiwara ◽  
Ikou Yamamura ◽  
Motoyasu Nishiyama ◽  
Kumi Shiokawa ◽  
Souichi Ohtsuki ◽  
...  
Keyword(s):  
Acetic Anhydride ◽  
Bisphenol A ◽  
Mixed Oxide ◽  
Sol Gel ◽  
Oxide Materials ◽  
Gel Method ◽  
Sol Gel Method

Thermal stability of MnOx–CeO2 mixed oxide for soot combustion: influence of Al2O3, TiO2, and ZrO2 carriers

RSC Advances ◽  
2015 ◽  
Vol 5 (111) ◽  
pp. 91734-91741 ◽  
Author(s):  
Zhou Ying ◽  
Xu Chenjun ◽  
Sheng Yeqing ◽  
Zhu Qiuliang ◽  
Chen Yinfei ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Mixed Oxide ◽  
Oxide Catalyst ◽  
Sol Gel ◽  
Combustion Reaction ◽  
Oxide Materials ◽  
Soot Combustion ◽  
Gel Method ◽  
Sol Gel Method ◽  
Thermal Stability Of

MnOx–CeO2 (Mn/Ce = 0.15/0.85) mixed oxide materials supported on ZrO2, Al2O3, and TiO2 were prepared by citrate sol–gel method to prevent the CeO2-based oxide catalyst from sintering during soot combustion reaction.

Sol-gel processing of varistor powders

1992 ◽  
Vol 7 (3) ◽  
pp. 546-548 ◽  
Author(s):  
Gert Hohenberger ◽  
Gerhard Tomandl
Keyword(s):  
Grain Boundaries ◽  
Mixed Oxide ◽  
Sol Gel ◽  
Homogeneous Distribution ◽  
Electrical Behavior ◽  
Gel Method ◽  
Sol Gel Method ◽  
Zno Varistor ◽  
Gel Processing ◽  
Source Materials

A new sol-gel method for the preparation of ZnO varistor powders, using inexpensive source materials such as acetates and nitrates, is described. It yields powders with a more homogeneous distribution of dopants compared to the commercially used mixed oxide technique. Varistor ceramics made from sol-gel powders can be sintered at lower temperatures and show improved electrical behavior. This is a consequence of formation of more varistor-active grain boundaries within the ceramics.

A Sol−Gel Method Using Tetraethoxysilane and Acetic Anhydride:  Immobilization of Cubic μ-Oxo Si−Ti Complex in a Silica Matrix

2002 ◽  
Vol 14 (12) ◽  
pp. 4975-4981 ◽  
Author(s):  
Masahiro Fujiwara ◽  
Helge Wessel ◽  
Hyung S. Park ◽  
Herbert W. Roesky
Keyword(s):  
Acetic Anhydride ◽  
Sol Gel ◽  
Silica Matrix ◽  
Gel Method ◽  
Sol Gel Method

Elucidating the nature and role of copper species in catalytic carbonylation of methanol to methyl acetate over copper/titania–silica mixed oxides

2017 ◽  
Vol 7 (16) ◽  
pp. 3511-3523 ◽  
Author(s):  
Xianjie Meng ◽  
Heqin Guo ◽  
Qiang Wang ◽  
Yong Xiao ◽  
Congbiao Chen ◽  
...  
Keyword(s):  
Mixed Oxide ◽  
Methyl Acetate ◽  
Mixed Oxides ◽  
Sol Gel ◽  
Copper Species ◽  
Gel Method ◽  
Sol Gel Method ◽  
Catalytic Carbonylation

In this study, a series of copper/titania–silica mixed oxide (Cu/TS) catalysts with different copper contents were prepared by a sol–gel method.

scholarly journals Synthesis and characterization of nanoscaled Ba(Ti1-x-ySnxGey)O3 powders and corresponding ceramics

2019 ◽  
Author(s):  
Roberto Köferstein
Keyword(s):  
Phase Transition ◽  
Mixed Oxide ◽  
Sol Gel ◽  
Correlation Spectroscopy ◽  
Germanium Content ◽  
Gel Method ◽  
Sol Gel Method ◽  
Phase Transition Temperatures ◽  
Germanium Concentration

Nanoscaled Ba(Ti1−x−ySnxGey)O3 (BTSG − x − y, x = 0–0.1, y = 0–0.05) powders were synthesized by a sol–gel method (SG) and, as a reference, coarse powders by a mixed-oxide method (MO). The particle sizes were determined by XRD, BET, photon correlation spectroscopy (PCS) and scanning electron microscopy (SEM). The sol–gel method supplied globular particles with narrow fractions in the range between 53 nm and 125 nm. However, from the mixed-oxide method irregularly grown particles were generated with diameters between 300 nm and 700 nm. The SG powders showed a higher sintering activity and, additionally, Sn4+ ions were incorporated at lower temperatures into the BaTiO3 structure. The addition of at least 2 mol% BaGeO3 (BG) resulted in ceramics of densities as high as 96% even at 1050 °C. Furthermore, the cubic ⇆ tetragonal phase transition temperatures were measured by dilatometry, differential thermal analysis (DTA) and dielectric measurements. The temperature and sharpness of the transition are dependent on tin and germanium content. Increasing tin and germanium concentration causes the phase transition temperature to decrease and more diffuse transition.

Cerium–zirconium mixed oxide synthesized by sol-gel method and its effect on the oxygen vacancy and specific surface area

2021 ◽  
pp. 122752
Author(s):  
Pablo Teles Aragão Campos ◽  
Claudinei Fabiano Oliveira ◽  
João Pedro Vieira Lima ◽  
Daniele Renata de Queiroz Silva ◽  
Sílvia Cláudia Loureiro Dias ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Mixed Oxide ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

A study on ternary mixed oxide coatings containing Ti, Ru, Ir by sol–gel method on titanium

2014 ◽  
Vol 73 (2) ◽  
pp. 332-340 ◽  
Author(s):  
Mona Goudarzi ◽  
Mohammad Ghorbani
Keyword(s):  
Mixed Oxide ◽  
Sol Gel ◽  
Oxide Coatings ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ternary Mixed Oxide

Characterization of Al2O3-ZrO2 mixed oxide catalytic supports prepared by the sol-gel method

1998 ◽  
Vol 20 (4-6) ◽  
pp. 293-306 ◽  
Author(s):  
Tatiana Klimova ◽  
Maria Luisa Rojas ◽  
Perla Castillo ◽  
Rogelio Cuevas ◽  
Jorge Ramírez
Keyword(s):  
Mixed Oxide ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Catalytic Supports

Control of mixed oxide textural and acidic properties by the sol-gel method

1997 ◽  
Vol 35 (3) ◽  
pp. 269-292 ◽  
Author(s):  
James B. Miller ◽  
Edmond I. Ko
Keyword(s):  
Mixed Oxide ◽  
Sol Gel ◽  
Acidic Properties ◽  
Gel Method ◽  
Sol Gel Method
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