Thermal stability of some platinum complexes

Hernández, J.; Choren, Eduardo

doi:10.1016/0040-6031(83)80059-8

Cited by 38 publications

(27 citation statements)

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“…The same was observed during calcination of these samples in Ar at about 220 • C. The decomposition of Pt(NH 3 ) 4 (NO 3 ) 2 and Pt(NH 3 ) 2 (NO 2 ) 2 in their unsupported forms or supported on SiO 2 was studied in the literature [21][22][23][24][25]. The unsupported Pt(NH 3 ) 2 (NO 2 ) 2 decomposed to Pt at about 120-130 • C in H 2 flow while at about 210-230 • C in He or air flow.…”

Section: Deposition Of Platinummentioning

confidence: 67%

“…The unsupported Pt(NH 3 ) 2 (NO 2 ) 2 decomposed to Pt at about 120-130 • C in H 2 flow while at about 210-230 • C in He or air flow. All these examples were always accompanied with high exothermic effects [21][22][23]. Pt(NH 3 ) 4 (NO 3 ) 2 supported on SiO 2 was reported to decompose to Pt between 150 and 200 • C in H 2 flow while between 200 and 250 • C in Ar or He flow [24,25].…”

Section: Deposition Of Platinummentioning

confidence: 95%

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Highly loaded carbon black supported Pt catalysts for fuel cells

et al. 2015

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Section: Deposition Of Platinummentioning

confidence: 67%

Section: Deposition Of Platinummentioning

confidence: 95%

Highly loaded carbon black supported Pt catalysts for fuel cells

et al. 2015

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“…Hernández et al [21] studied the thermal decomposition of (NH 4 ) 2 [PtCl 4 ] using thermogravimetric analysis (TGA) and differential thermal analysis (DTA). On the basis of their results, they suggested that NH 4 [PtCl 3 ] is formed at 275°C and PtCl 2 /Pt ?…”

Section: Introductionmentioning

confidence: 99%

“…Diammonium tetrachloroplatinate, (NH 4 ) 2 [PtCl 4 ], is a very important compound in the synthesis of catalysts [17][18][19]. Several reports on the thermal decomposition of this compound have focused on the structural characteristics of this substance, but little attention has been given to the characteristics of the metal particles resulting from the thermal decomposition [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Thermal Decomposition of Diammonium Tetrachloroplatinate to form Platinum Nanoparticles and its Application as Electrodes

et al. 2009

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Pt nanoparticles were obtained via the thermal decomposition of (NH 4 ) 2 [PtCl 4 ] (diammonium tetrachloroplatinate) by heating from room temperature to 760°C. The thermal decomposition process was analyzed using thermogravimetric analysis (TGA) and differential thermal analysis (DTA), X-ray thermodiffraction and infrared spectroscopy. The size and structure of the platinum particles were analyzed using transmission electron microscopy (TEM). The electrochemical activity of Pt particles was assessed by cyclic voltammetry in 0.5 M H 2 SO 4 . The TGA and DTA results suggested that the thermal decomposition of the precursor proceeded in two stages: loss of NH 4 Cl at *300°C, followed by loss of NH 4 Cl and Cl 2 at *372°C. Metallic Pt particles were then produced at temperatures of 372°C and above. At 760°C, the mean ± SD size of the Pt particles was (4.1 ± 1.6) nm, as determined from TEM measurements. In cyclic voltammetry (CV) measurements, an electrode comprised of glassy carbon and Pt particles in 0.5 M H 2 SO 4 exhibited behavior similar to that observed using a polycrystalline Pt electrode.

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“…• C the platinum precursor will decompose into platinum, gaseous hydrochloric acid, and chlorine (Hernandez and Choren 1983). In the first route the by EHDA produced chloroplatinic acid particles are deposited on a carrier support.…”

Section: Methodsmentioning

confidence: 99%

Platinum Nanoparticle Production by EHDA

Erven¹,

Moerman²,

Marijnissen³

2005

Aerosol Science and Technology

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This article describes the use of Electro HydroDynamic Atomization, EHDA, and pyrolysis to produce platinum nanoparticles. EHDA is used to atomize a precursor solution of chloroplatinic acid in ethanol. Subsequently two different routes are employed to convert the chloroplatinic acid into platinum. In the first route the precursor droplets are directly sprayed on a Si/SiO 2 substrate. After the deposition the substrate is heated in a furnace at 700• C for 10 minutes. In the second route the originally highly charged droplets are neutralized with a corona discharge and then in an airborne state ducted through a tubular furnace at 700• C for about 2 minutes. After the furnace the platinum nanoparticles are deposited on a TEM grid. In both cases nanoplatinum particles are formed of about 10 nanometer. Platinum nanoparticles made via the first route have already been used in microscale catalytic soot oxidation experiments. However the methods presented here can be seen as generic recipes to produce nanoparticles of different composition, depending on the precursors and after treatment.

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Thermal stability of some platinum complexes

Cited by 38 publications

References 1 publication

Highly loaded carbon black supported Pt catalysts for fuel cells

Highly loaded carbon black supported Pt catalysts for fuel cells

Thermal Decomposition of Diammonium Tetrachloroplatinate to form Platinum Nanoparticles and its Application as Electrodes

Platinum Nanoparticle Production by EHDA

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