11107-71-4

Basic information

• Product Name: PLATINUM RHODIUM
• Synonyms: PLATINUM RHODIUM;PLATINUM RHODIUM ALLOY;PLATINUM/PLATINUM RHODIUM;platinum/10% rhodium alloy;platinum/13% rhodium alloy;platinum/30% rhodium alloy;platinum/6% rhodium alloy;PLATINUM/13% RHODIUM ALLOY, WIRE, 0.51MM DIAM., THERMOCOUPLE GRADE
• CAS NO: 11107-71-4
• Molecular Formula: PtRh
• Molecular Weight: 297.98
• Mol File: 11107-71-4.mol

Chemical Properties

• Appearance: Silver/wire
• Water Solubility: Insoluble in water.
• CAS DataBase Reference: PLATINUM RHODIUM(CAS DataBase Reference)
• NIST Chemistry Reference: PLATINUM RHODIUM(11107-71-4)
• EPA Substance Registry System: PLATINUM RHODIUM(11107-71-4)

Safety Data

• WGK Germany: 3
• Hazardous Substances Data: 11107-71-4(Hazardous Substances Data)

Usage

Uses

Used in Calibration Standards:
Platinum Rhodium is used as a standard for calibration of base metal thermocouples, ensuring accurate temperature measurements in various applications.
Used in Glass Industry:
In the glass industry, Platinum Rhodium is utilized for furnace linings and complex fabrications due to its ability to withstand high temperatures and resist corrosion.
Used in High-Temperature Applications:
Platinum Rhodium alloys are preferred for applications at high temperatures, such as in thermocouples, due to their retention of good mechanical properties, including hot strength and minimal volatilization or oxidation.
Used in Thermocouples:
Platinum Rhodium alloys are used for thermocouples designed for temperatures above 1100°C. The standard thermocouple is platinum vs. platinum-10% rhodium, while other thermocouples for higher operating temperatures use Platinum Rhodium alloys in both elements.
Used in Glass Fiber Extrusion:
In the glass industry, Platinum Rhodium alloys are widely used as glass-fiber extrusion bushings. Rhodium increases the high-temperature strength of platinum without reducing its resistance to oxidation.
Used as a Catalyst in Chemical Production:
Platinum Rhodium gauze, containing 90% platinum and 10% rhodium, is used as a catalyst in the production of nitric acid from ammonium. This application takes advantage of Platinum Rhodium's catalytic properties and resistance to high temperatures and corrosive environments.

InChI:InChI=1/Pt.Rh

Upstream product

• 281207-59-8 Rh(III) chloropentammine*PdCl₄^(2-) complex 
• 281207-59-8 tetrachloroplatinato(II)chloropentaamminerhodium(III) 
• 1333-74-0 hydrogen 

Relevant articles and documents

Optimization of Pt-Ir on carbon fiber paper for the electro-oxidation of ammonia in alkaline media

Plating bath concentrations of Pt(IV) and Ir(III) have been optimized as well as the total catalytic loading of bimetallic Pt-Ir alloy for the electro-oxidation of ammonia in alkaline media at standard conditions. This was accomplished using cyclic voltam

Powder X-ray diffraction study of the double complexes [M(NH 3)5Cl][M′Cl4] as precursors of metal powders (M = Ir, Rh, Co; M′ = Pt, Pd)

According to the results of powder X-ray diffraction study of the complex salts of composition [M(NH3)5Cl][M′Cl4] (M = Ir, Rh, or Co and M′ = Pt or Pd), the anhydrous salts crystallize in the orthorhombic system (space gro

Rh-Pt bimetallic catalysts: Synthesis, characterization, and catalysis of core-shell, alloy, and monometallic nanoparticles

Rh?Pt core-shell, RhPt (1:1) alloy, and Rh + Pt monometallic nanoparticles (NPs) were prepared using standard polyol reduction chemistry in ethylene glycol (EG) with standard inorganic salts and polyvinylpyrrolidine (PVP 550oo) stabilizers. PVP-free colloids were also prepared but less stable than the PVP-protected NPs. Rh?Pt core-shell particles were prepared from 2.7, 3.3, and 3.9 nm Rh cores with varying shell thicknesses (～1 and ～2 ML). The particles were characterized by a combination of TEM, single-particle EDS, EDS line scans, XRD analysis, Debye Function simulations, FT-IR, and micro-Raman CO-probe experiments. The three different architectures were evaluated for preferential oxidation of CO in hydrogen (PROX) using 1.0 wt % Pt loadings in Al203 supports. For hydrogen feeds with 0.2% CO and 0.5% 02 the Rh?Pt NP catalyst has the best activity with complete CO oxidation at 70 °C and very high PROX selectivity at 40 °C with 50% CO conversion.

Synthesis and properties of [Rh(NH3)5Cl][PtCl4]

The improved method was developed for preparing the [Rh(NH3)5Cl]Cl2 complex. The complex was used to synthesize the tetrachloroplatinato(II)chloropentaamminerhodium(III) double salt. The solubility product of the salt was estimated to be 7 x 10-8 (mol/l)2 at 17°C. Thermolysis of [Rh(NH3)5Cl] [PtCl4] in an atmosphere of hydrogen or helium gave a powdered 1: 1 Pt-Rh solid solution as a final product. The crystallite sizes were determined from the broadening of the diffraction reflections: 90 and 170 A upon the calcination in hydrogen and helium, respectively.

Preparation of normally liquid hydrocarbons and a synthesis gas to make the same, from a normally gaseous hydrocarbon feed

A process for preparing a hydrogen and carbon monoxide containing synthesis gas for hydrocarbon synthesis includes autothermally reforming a natural gas (CH4) feed with oxygen, steam and recycled carbon dioxide and, optionally, recycled hydrocarbon by-products from the hydrocarbon synthesis step. The reforming is carried out in an autothermal reformer comprising a first monolithic catalyst zone utilizing a palladium and platinum containing catalyst followed by a second platinum group metal steam reforming zone. The product of the autothermal reformer comprises hydrogen, carbon oxides and water. Carbon dioxide and water are removed from the reformer effluent and recycled to the reformer. The resulting synthesis gas comprises hydrogen and carbon monoxide in a selected ratio for passage to, e.g., a Fischer-Tropsch synthesis process. Light and heavy hydrocarbon by-products of the Fischer-Tropsch process may be recycled to the autothermal reformer.

Method of methanol production

A process for methanol production includes preparing a hydrogen containing synthesis gas by autothermally reforming a hydrocarbonaceous feed, such as a hydrocarbon feed, with oxygen and steam in an autothermal reformer utilizing a first, monolithic catalyst having a palladium and platinum containing catalyst therein, and a second, platinum group metal steam reforming catalyst. The autothermal reformer provides a relatively simple and compact reactor within which a wide variety of hydrocarbonaceous feeds, from heavy hydrocarbon feedstocks to natural gas, may be utilized for producing methanol synthesis gas, which is advantageously carried out at an elevated pressure. By controlling H2 O to carbon and O2 to carbon feed ratios, a given feed can be autothermally reformed to yield a synthesis gas of desired ratio of 1 H2 to (2CO+3CO2) for methanol production.