Incorporation of Titanium into the Inorganic Wall of Ordered Porous Zirconium Oxide via Direct Synthesis

2001 ◽  
Vol 13 (3) ◽  
pp. 1035-1040 ◽  
Author(s):  
Hang-Rong Chen ◽  
Jian-Lin Shi ◽  
Wen-Hau Zhang ◽  
Mei-Ling Ruan ◽  
Dong-Sheng Yan
Keyword(s):  
Zirconium Oxide ◽  
Direct Synthesis ◽  
Ordered Porous

Preparation and characterization of manganese oxide confined within ordered porous zirconium oxide channels

2001 ◽  
Vol 47 (2-3) ◽  
pp. 173-178 ◽  
Author(s):  
Hang-Rong Chen ◽  
Jian-Lin Shi ◽  
Wen-Hua Zhang ◽  
Mei-Ling Ruan ◽  
Dong-Sheng Yan
Keyword(s):  
Manganese Oxide ◽  
Zirconium Oxide ◽  
Ordered Porous

Highly Ordered Porous Zirconias from Surfactant-Controlled Syntheses:  Zirconium Oxide−Sulfate and Zirconium Oxo Phosphate

1999 ◽  
Vol 11 (2) ◽  
pp. 227-234 ◽  
Author(s):  
Ulrike Ciesla ◽  
Michael Fröba ◽  
Galen Stucky ◽  
Ferdi Schüth
Keyword(s):  
Zirconium Oxide ◽  
Ordered Porous ◽  
Oxide Sulfate

Anodic Porous Zirconium Oxide Prepared in Sulfuric Acid Electrolytes

2006 ◽  
Vol 512 ◽  
pp. 205-210 ◽  
Author(s):  
Hiroaki Tsuchiya ◽  
Jan M. Macak ◽  
Irina Sieber ◽  
Patrik Schmuki
Keyword(s):  
Sulfuric Acid ◽  
Porous Structure ◽  
Zirconium Oxide ◽  
Open Circuit Potential ◽  
Sweep Rate ◽  
Open Circuit ◽  
Potential Sweep ◽  
Self Organized ◽  
Electrochemical Condition ◽  
Ordered Porous

We report the formation of self-organized porous ZrO2 layers by anodization of Zr in H2SO4 electrolytes. Anodization at 20 V after a potential sweep from open-circuit potential with a defined sweep rate results in tube-like porous ZrO2. In particular, under optimized electrolyte condition and polarization, a highly ordered porous structure is obtained. Furthermore, sponge-like porous ZrO2 is also fabricated under a specific electrochemical condition.

The Oxidation of Macroporous Cerium and Cerium-Zirconium Oxide for the Solar Thermochemical Production of Fuels

2011 ◽  
Author(s):  
Luke J. Venstrom ◽  
Nicholas Petkovich ◽  
Stephen Rudisill ◽  
Andreas Stein ◽  
Jane H. Davidson
Keyword(s):  
Specific Surface ◽  
Production Rate ◽  
Surface Area ◽  
Cerium Oxide ◽  
Specific Surface Area ◽  
Zirconium Oxide ◽  
H2 Production ◽  
Production Rates ◽  
Solar Thermochemical ◽  
Ordered Porous

The H2 and CO productivity and reactivity of three-dimensionally ordered macroporous (3DOM) cerium and cerium-zirconium oxide upon H2O and CO2 oxidation at 1073K is presented in comparison to the productivity and reactivity of non-ordered porous and low porosity cerium oxide. The production of H2 and CO2 constitutes the second step of the two-step solar thermochemical H2O and CO2 splitting cycles. The 3DOM cerium oxide, with a specific surface area of 25 m2 g−1, increases the average H2 and CO production rates over the non-ordered porous cerium oxide with a specific surface area of 112 m2 g−1: the average H2 production rate increases from 5.2 cm3 g−1 min−1 to 7.9 cm3 g−1 min−1 and the average CO production rate increases from 7.7 cm3 g−1 min−1 to 21.9 cm3 g−1 min−1. The superior reactivity of 3DOM cerium oxide is attributed primarily to the stability of the 3DOM structure and also to the improved transport of reacting species to and from oxidation sites realized with the interconnected and ordered pores of the 3DOM structure. Doping the 3DOM cerium oxide with 20 mol% zirconia further stabilizes the structure and increases the average H2 and CO production rates to 10.2 cm3 g−1 min−1 and 22.1 cm3 g−1 min−1, respectively.

Synthesis of titanium-doped ordered porous zirconium oxide with high-surface-area

2000 ◽  
Vol 39 (1-2) ◽  
pp. 171-176 ◽  
Author(s):  
Hang-Rong Chen ◽  
Jian-Lin Shi ◽  
Jian Yu ◽  
Lian-Zhou Wang ◽  
Dong-Sheng Yan
Keyword(s):  
Surface Area ◽  
Zirconium Oxide ◽  
High Surface ◽  
High Surface Area ◽  
Ordered Porous

ChemInform Abstract: Highly Ordered Porous Zirconias from Surfactant-Controlled Syntheses: Zirconium Oxide-Sulfate and Zirconium Oxo Phosphate.

ChemInform ◽  
2010 ◽  
Vol 30 (16) ◽  
pp. no-no
Author(s):  
Ulrike Ciesla ◽  
Michael Froeba ◽  
Galen Stucky ◽  
Ferdi Schueth
Keyword(s):  
Zirconium Oxide ◽  
Ordered Porous ◽  
Oxide Sulfate

Parameter control in the synthesis of ordered porous zirconium oxide

2001 ◽  
Vol 51 (3) ◽  
pp. 187-193 ◽  
Author(s):  
Hang-Rong Chen ◽  
Jian-Lin Shi ◽  
Zi-Le Hua ◽  
Mei-Ling Ruan ◽  
Dong-Sheng Yan
Keyword(s):  
Zirconium Oxide ◽  
Parameter Control ◽  
Ordered Porous

Resolving Crystallites in Zirconium Oxide Films

1969 ◽  
Vol 27 ◽  
pp. 140-141
Author(s):  
R.A. Ploc
Keyword(s):  
Electron Microscope ◽  
Inelastic Scattering ◽  
Zirconium Oxide ◽  
Oxide Films ◽  
Optic Axis ◽  
Objective Lens ◽  
Microscope Objective ◽  
Linear Optic ◽  
A Current ◽  
Microscope Objective Lens

The optic axis of an electron microscope objective lens is usually assumed to be straight and co-linear with the mechanical center. No reason exists to assume such perfection and, indeed, simple reasoning suggests that it is a complicated curve. A current centered objective lens with a non-linear optic axis when used in conjunction with other lenses, leads to serious image errors if the nature of the specimen is such as to produce intense inelastic scattering.

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