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
ChemInform ◽  
2010 ◽  
Vol 30 (16) ◽  
pp. no-no
Author(s):  
Ulrike Ciesla ◽  
Michael Froeba ◽  
Galen Stucky ◽  
Ferdi Schueth

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

2006 ◽  
Vol 512 ◽  
pp. 205-210 ◽  
Author(s):  
Hiroaki Tsuchiya ◽  
Jan M. Macak ◽  
Irina Sieber ◽  
Patrik Schmuki

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.


1988 ◽  
Vol 96 (1118) ◽  
pp. 980-984 ◽  
Author(s):  
Chunting LI ◽  
Keiji DAIMON ◽  
Yoshio MURASE ◽  
Etsuro KATO

2008 ◽  
Vol 62 (10-11) ◽  
pp. 1624-1626 ◽  
Author(s):  
P. Afanasiev ◽  
C. Geantet ◽  
M. Breysse

Author(s):  
Luke J. Venstrom ◽  
Nicholas Petkovich ◽  
Stephen Rudisill ◽  
Andreas Stein ◽  
Jane H. Davidson

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.


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

2019 ◽  
Vol 12 (1) ◽  
pp. 646-653 ◽  
Author(s):  
Mohamed N. Goda ◽  
Hani Nasser Abdelhamid ◽  
Abd El-Aziz A. Said

1989 ◽  
Vol 97 (1122) ◽  
pp. 113-118 ◽  
Author(s):  
Chunting LI ◽  
Iwao YAMAI ◽  
Etsuro KATO

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