A study on selective oxidation of methanol over lamellar vanadosilicates catalysts

• Grant number: 17/00860-0
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: April 01, 2017
• End date: September 30, 2017
• Field of knowledge: Engineering - Chemical Engineering - Chemical Technology
• Principal Investigator: Leandro Pierroni Martins
• Grantee: Luiz Henrique Vieira
• Supervisor: Christopher W. Jones
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Institution abroad: Georgia Institute of Technology, United States
• Associated to the scholarship: 14/20116-6 - Development and application of lamellar vanadosilicates as catalysts in the glycerol oxidative dehydration, BP.DR

Abstract

In this proposal, we intend to use the catalytic system based in a vanadosilicate lamellar precursor obtaining a pure microporous material from structure condensation by calcination, and a micro/mesoporous layered material from an exfoliation process. The good results we have obtained so far, motivated us to seek a complete understanding of the enhanced catalytic efficiency of these materials that demands a wide characterization. In this study, the vanadosilicates catalysts will be characterized by N2 physisorption, diffuse reflectance UV-Vis spectroscopy in controlled atmospheres, temperature-programmed of reduction (TPR), and the methanol oxidation will be evaluated as a probe reaction comparing the catalytic test results with the reaction intermediates identified by in situ Fourier transformed infrared spectroscopy. The additional characterization of the materials using techniques not available in our group will help us to identify and completely understand the properties of active sites presented in the catalysts and will provide valuable information on how the structural properties influence the oxidative potential of these catalysts.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VIEIRA, LUIZ H.; POSSATO, LUIZ G.; CHAVES, THIAGO F.; LEE, JASON J.; SULMONETTI, TAYLOR P.; JONES, CHRISTOPHER W.; MARTINS, LEANDRO. Insights into Redox Dynamics of Vanadium Species Impregnated in Layered Siliceous Zeolitic Structures during Methanol Oxidation Reactions. CHEMCATCHEM, v. 12, n. 1, p. 141-151, JAN 8 2020. (18/01258-5, 17/00860-0, 14/20116-6)

VIEIRA, LUIZ H.; LOPEZ-CASTILLO, ALEJANDRO; JONES, CHRISTOPHER W.; MARTINS, LEANDRO. Exploring the multifunctionality and accessibility of vanadosilicates to produce acrylic acid in one-pot glycerol oxydehydration. APPLIED CATALYSIS A-GENERAL, v. 602, JUL 25 2020. (18/01258-5, 17/00860-0, 19/12501-0, 19/17156-0, 14/20116-6)