Method development for the determination of rhodium, paladium, iridium and platinum in mesoporous silica used as catalist by ICP OES

• Grant number: 10/04857-5
• Support Opportunities: Scholarships in Brazil - Master
• Start date: August 01, 2010
• End date: June 30, 2011
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Pedro Vitoriano de Oliveira
• Grantee: Valeska Meirelles Sousa
• Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

This research project aims the development of methods for the determination of Rh, Pd, Ir and Pt supported on silica mesoporosa used in automotive catalysts by inductively coupled plasma emission spectrometry (ICP OES). Sample digestion in microwave oven with closed vessel and slurry sampling will be investigated in this study. For sampling of solutions, some procedures for calibration of equipment will be investigated: the use of reference analytical solutions in aqueous medium and use of internal standardization with the elements added in solution or adsorbed to on sample particles in suspension. The elements to be investigated as internal standard are Dy, Gd, in, La, SC, y, Yb and Tl, the heating program for digestion in microwave oven, particles size, acid concentration for slurry sample preparation, power supply, nebulizer gas flow rate and observation zone of ICP OES with axial view are some parameters to be studied.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SOUSA, Valeska Meirelles. Development of method for the determination of iridium, palladium, platinum and rhodium in mesoporosa silica for catalyst use by ICP OES. 2012. Master's Dissertation - Universidade de São Paulo (USP). Conjunto das Químicas (IQ e FCF) (CQ/DBDCQ) São Paulo.