Preparation of porous glass-ceramics with a skeleton of NASICON-type crystal CuTi{sub 2}(PO{sub 4}){sub 3}

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1997.tb02910.x· OSTI ID:474169

Abe, Yoshihiro ^[1]

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1. Nagoya Inst. of Tech. (Japan). Dept. of Materials Science and Engineering

A novel porous glass-ceramic with a skeleton of CuTi{sub 2}(PO{sub 4}){sub 3} was prepared by controlled crystallization of a glass and subsequent chemical leaching of the resulting dense glass-ceramic. A volume-crystallized dense glass-ceramic composed of CuTi{sub 2}(PO{sub 4}){sub 3} and Cu{sub 3}(PO{sub 4}){sub 2} whose surface was covered by a CuO thin layer was prepared by reheating a glass with a nominal composition of 50 CuO{center_dot}20TiO{sub 2}{center_dot}30P{sub 2}O{sub 5} (in mol%) glass in air. When the resultant glass-ceramic was leached with dilute H{sub 2}SO{sub 4}, Cu{sub 3}(PO{sub 4}){sub 2} and CuO phases were dissolved out selectively, leaving a crystalline CuTi{sub 2}(PO{sub 4}){sub 3} skeleton. The specific surface area and the average pore radius of the porous glass-ceramic obtained were approximately 45 m{sup 2}{center_dot}g{sup {minus}1} and 9 nm, respectively. The porous glass-ceramic showed catalytic activity in the conversion reaction of propene into acrolein.

• Sponsoring Organization: USDOE
• OSTI ID: 474169
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 3 Vol. 80; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CATALYTIC EFFECTS
COPPER PHOSPHATES
CRYSTAL GROWTH
CRYSTALLIZATION
GLASS
LEACHING
NUCLEATION
POROSITY
SAMPLE PREPARATION
SULFURIC ACID
SURFACE AREA
SYNTHESIS
TITANIUM PHOSPHATES