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
• Article Data: 6

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

Platinum Rhodium foil, 0.025mm (0.001in) thick, 99.9% (metals basis) is used as a standard for calibration of base metal thermocouples. It is also used in the glass industry for furnace linings and complex fabrications.

Industrial uses

The addition of rhodium to platinum also providesimproved mechanical properties to platinumand increases its resistance to corrosion.For applications at high temperatures, the platinum–rhodium alloys are preferred because ofretention of good mechanical properties includinggood hot strength and very little tendencytoward volatilization or oxidation. Platinum–rhodium alloys are used for thermocouplesfor temperatures above 1100°C. Thestandard thermocouple is platinum vs. platinum–10% rhodium. Other thermocouples forhigher operating temperatures use platinum–rhodium alloys in both elements. Thealloys of platinum–rhodium are widely used inthe glass industry, particularly as glass-fiberextrusion bushings. Rhodium increases thehigh-temperature strength of platinum withoutreducing its resistance to oxidation. Platinum–rhodium gauze for use as a catalyst inproducing nitric acid from ammonium contains90% platinum and 10% rhodium.

InChI:InChI=1/Pt.Rh

Upstream product

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

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

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.

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.