Synthesis of nanocatalysts from biomass and use in multicomponent reactions
| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Energy & Nucl Res Inst IPEN, POB 11049, BR-05422970 Sao Paulo, SP - Brazil
[2] Energy & Nucl Res Inst, Ctr Mat Sci & Technol, Sao Paulo - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 133, n. 2, p. 851-857, AUG 2018. |
| Web of Science Citations: | 1 |
| Abstract | |
Calcium copper titanate powders were synthesized by a soft chemistry route, aiming to establish a cost-effective solution method to obtain sintered ceramics with giant electric permittivity (epsilon') and low dissipation factor (tan delta). Powders and sintered pellets were characterized by several techniques. The thermal decomposition behavior of the porous foam evidences that a hydroxycitrate was formed below 200 A degrees C. Single cubic perovskite-type phase was obtained after calcination of the precursor powder at 700 A degrees C for 5 h. Negligible mass loss occurs above 400 A degrees C. During heating the precursor material, CuO is the first crystallized phase. A giant epsilon' and low tan delta are obtained after sintering. The extension of the thermal window of epsilon' is wider than those of powders prepared by other methods. (AU) | |
| FAPESP's process: | 13/07296-2 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Elson Longo da Silva |
| Support type: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |