Calcium Hydroxovanadate Synthesis
Location
CSU Ballroom
Start Date
21-4-2014 10:00 AM
End Date
21-4-2014 11:30 AM
Student's Major
Chemistry and Geology
Student's College
Science, Engineering and Technology
Mentor's Name
Lyudmyla Stackpool
Mentor's Email Address
Mentor's Department
Chemistry and Geology
Mentor's College
Science, Engineering and Technology
Description
Compounds with the apatite-type structure, M5(ZO4)3X (where M = Ca2+, Sr2+, Ba2+, Pb2+ etc.; Z = Si4+, Ge4+, P5+, V5+, As5+ etc.; X = OH-, F-, O2-, etc.) are characterized by different properties and may be used as bioactive, laser and luminescent materials, sensors, solid electrolytes and adsorbents. Hydroxovanadates (Ca5(VO4)3OH) with apatite structure have enhanced catalytic properties [1] and have been used as carriers for palladium, ruthenium complexes, zinc, nickel, and copper compounds [2, 3] in heterogeneous hybrid catalysis. The purpose of this work was to study for more efficient method of Ca5(VO4)3OH synthesis. Solid-phase synthesis and solid-phase synthesis from solutions using CaCO3 and NH4VO3 as initial reagents were considered and studied by X-ray powder diffraction. Ceramic synthesis of calcium hydroxovanadates (Ca5(VO4)3OH) can be performed at temperature of at least 900⁰C after annealing for 24 hours. Due to the better homogenization of the constituents of the resulting compound through solubilization, solid-phase synthesis of single-phase product from nitric-tartaric solution can be carried out at much lower temperature of 650⁰C, after annealing for only 7 hours and this method appears to be more advantageous. 1. T. Hara, S. Kanai, K. Mori, T. Mizugaki, K. Ebitani, K.Jitsukawa and K. Kaneda, J. Org. Chem., 2006, 71, 7455-7462. 2. K.Yamaguchi, K. Mori, T. Mizugaki, K. Ebitani and K.Kaneda, J. Am. Chem. Soc., 2000, 122, 7144-7145. 3. K. Mori, K. Yamaguchi, T. Hara, T. Mizugaki, K. Ebitani and K. Kaneda, J. Am. Chem. Soc. 2002, 124, 11572-11573.
Calcium Hydroxovanadate Synthesis
CSU Ballroom
Compounds with the apatite-type structure, M5(ZO4)3X (where M = Ca2+, Sr2+, Ba2+, Pb2+ etc.; Z = Si4+, Ge4+, P5+, V5+, As5+ etc.; X = OH-, F-, O2-, etc.) are characterized by different properties and may be used as bioactive, laser and luminescent materials, sensors, solid electrolytes and adsorbents. Hydroxovanadates (Ca5(VO4)3OH) with apatite structure have enhanced catalytic properties [1] and have been used as carriers for palladium, ruthenium complexes, zinc, nickel, and copper compounds [2, 3] in heterogeneous hybrid catalysis. The purpose of this work was to study for more efficient method of Ca5(VO4)3OH synthesis. Solid-phase synthesis and solid-phase synthesis from solutions using CaCO3 and NH4VO3 as initial reagents were considered and studied by X-ray powder diffraction. Ceramic synthesis of calcium hydroxovanadates (Ca5(VO4)3OH) can be performed at temperature of at least 900⁰C after annealing for 24 hours. Due to the better homogenization of the constituents of the resulting compound through solubilization, solid-phase synthesis of single-phase product from nitric-tartaric solution can be carried out at much lower temperature of 650⁰C, after annealing for only 7 hours and this method appears to be more advantageous. 1. T. Hara, S. Kanai, K. Mori, T. Mizugaki, K. Ebitani, K.Jitsukawa and K. Kaneda, J. Org. Chem., 2006, 71, 7455-7462. 2. K.Yamaguchi, K. Mori, T. Mizugaki, K. Ebitani and K.Kaneda, J. Am. Chem. Soc., 2000, 122, 7144-7145. 3. K. Mori, K. Yamaguchi, T. Hara, T. Mizugaki, K. Ebitani and K. Kaneda, J. Am. Chem. Soc. 2002, 124, 11572-11573.
Recommended Citation
Hunde, Tigist. "Calcium Hydroxovanadate Synthesis." Undergraduate Research Symposium, Mankato, MN, April 21, 2014.
https://cornerstone.lib.mnsu.edu/urs/2014/poster_session_A/36
