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Processing and properties of high-purity micro-lamellate (NH4)2RuCl6 particles.
- Source :
- Green Processing & Synthesis; Feb2018, Vol. 7 Issue 1, p16-22, 7p
- Publication Year :
- 2018
-
Abstract
- (NH<subscript>4</subscript>)<subscript>2</subscript>RuCl<subscript>6</subscript> is an important precursor in the synthesis of Ru powder with high-purity requirement. In this study, high-purity (>99.999 wt%) micro-sized (NH<subscript>4</subscript>)<subscript>2</subscript>RuCl<subscript>6</subscript> pieces were synthesized by distillation and precipitation from crude Ru powder. Then, the thermal decomposition behavior of the (NH<subscript>4</subscript>)<subscript>2</subscript>RuCl<subscript>6</subscript> pieces was investigated. The decomposition process included two stages. First, (NH<subscript>4</subscript>)<subscript>2</subscript>RuCl<subscript>6</subscript> was decomposed from 255.0°C to 314.0°C, with the endothermic peak located at 309.4°C. At this stage, HCl and NH<subscript>3</subscript> were released, while the dense micro-pieces were transformed to loosened micro-pieces due to the thermal decomposition. Then, the solid phase [(NH<subscript>3</subscript>)<subscript>4</subscript>Ru<subscript>3</subscript>Cl<subscript>12</subscript>] kept decomposing from 314.0°C to 352.7°C, HCl and N<subscript>2</subscript> were released, and agglomerated Ru particles were achieved. Thermogravimetric analysis-differential thermal analysis-mass spectrum coupling (TG-DTA-MS) was used to monitor the thermal decomposition process and identify the released gaseous phases, respectively. The solid phases in different stages were characterized by high-temperature X-ray diffraction (HTXRD). A good understanding of the processing and thermal decomposition of (NH<subscript>4</subscript>)<subscript>2</subscript>RuCl<subscript>6</subscript> is crucial in the creation of Ru products. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21919542
- Volume :
- 7
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Green Processing & Synthesis
- Publication Type :
- Academic Journal
- Accession number :
- 127866832
- Full Text :
- https://doi.org/10.1515/gps-2016-0128