Copper-based layered double hydroxides for hydrogen production and other value-added products

• Grant number: 15/23410-5
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: April 01, 2016
• End date: March 01, 2020
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Celso Valentim Santilli
• Grantee: Rodrigo Morais Menezes dos Santos
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Associated scholarship(s): 17/13821-3 - XAS time-resolved phase speciation of Cu-based Layered Double Hydroxides to ethanol dehydrogenation, BE.EP.DR

Abstract

Currently, environmental problems associated with the use of fossil fuels have been a major topic of concern, generating interest in clean and renewable energy-based processes. Ethanol produced from renewable sources has proved advantageous in various aspects and promising to replace and/or complement the petrochemistry in the future, to obtain H2 and various derivatives. Layered Double Hydroxides (LDH) represent one of the most promising materials for catalysis, with suitable features and properties. Thus, this research project aims to study the copper-containing LDH application for ethanol dehydrogenation to hydrogen production and other value-added products. More specifically, the objectives of this project are: (I) synthesis and characterization of hierarchical porous structured LDH and their derivatives from the CuxZn2-XGa system, with different copper levels; (II) Catalytic efficiency and selectivity for the materials with different Cu+/Cu0 ratios in the reaction. The materials will be characterized by a set of techniques, such as: XRD, TGA, N2 physisorption, porosimetry, TPR-H2, TPD-NH3 etc. The catalytic efficiency will be studied in reactor system by evaluating the effect of the content and dispersion of the catalyst on the support. Under the same conditions will be assessed the catalyst transformations through the catalysis reaction steps in situ and operando by Quick-XAS and the products will be monitored by mass spectrometry and Raman. (AU)

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)

PINTO, M. C. E.; SANTOS, R. M. M.; GONCALVES, R. G. L.; DUARTE, V. G. O.; BORGES, P. D.; LEROUX, F.; CONSTANTINO, V. R. L.; IZUMI, C. M. S.; PINTO, F. G.; TRONTO, J.. Adsorption of Dicamba herbicide onto a carbon replica obtained from a layered double hydroxide. DALTON TRANSACTIONS, v. 47, n. 9, p. 3119-3127, MAR 7 2018. (15/23410-5)

SANTOS, R. M. M.; TRONTO, J.; BRIOIS, V.; SANTILLI, C. V.. Thermal decomposition and recovery properties of ZnAl-CO3 layered double hydroxide for anionic dye adsorption: insight into the aggregative nucleation and growth mechanism of the LDH memory effect. JOURNAL OF MATERIALS CHEMISTRY A, v. 5, n. 20, p. 9998-10009, MAY 28 2017. (13/25043-4, 15/23410-5)

SANTOS, RODRIGO M. M.; BRIOIS, VALERIE; MARTINS, LEANDRO; SANTILLI, V, CELSO. Insights into the Preparation of Copper Catalysts Supported on Layered Double Hydroxide Derived Mixed Oxides for Ethanol Dehydrogenation. ACS APPLIED MATERIALS & INTERFACES, v. 13, n. 22, p. 26001-26012, JUN 9 2021. (18/01258-5, 17/13821-3, 15/23410-5)

Academic Publications

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

SANTOS, Rodrigo Morais Menezes dos. Copper-based layered double hydroxides (LDH) for the production of hydrogen and other value-added products. 2020. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Instituto de Química. Araraquara Araraquara.