Event Title

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

lyudmyla.stackpool@mnsu.edu

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.

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Apr 21st, 10:00 AM Apr 21st, 11:30 AM

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.
http://cornerstone.lib.mnsu.edu/urs/2014/poster_session_A/36