Next Article in Journal
Heating Characteristics and Induced Healing Efficiencies of Asphalt Mixture via Induction and Microwave Heating
Next Article in Special Issue
CO Oxidation at 20 °C on Au Catalysts Supported on Mesoporous Silica: Effects of Support Structural Properties and Modifiers
Previous Article in Journal
Coextrusion-Based 3D Plotting of Ceramic Pastes for Porous Calcium Phosphate Scaffolds Comprised of Hollow Filaments
Previous Article in Special Issue
Au and AuCu Nanoparticles Supported on SBA-15 Ordered Mesoporous Titania-Silica as Catalysts for Methylene Blue Photodegradation
Open AccessFeature PaperArticle

Surface Characterization of Mesoporous CoOx/SBA-15 Catalyst upon 1,2-Dichloropropane Oxidation

1
Dipartimento di Ingegneria Civile, Chimica e Ambientale (DICCA), Università degli Studi di Genova, Via all’Opera Pia 15, I-16145 Genova, Italy
2
Departamento de Ingeniería Química, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, E-48080 Bilbao, Spain
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(6), 912; https://doi.org/10.3390/ma11060912
Received: 4 May 2018 / Revised: 25 May 2018 / Accepted: 26 May 2018 / Published: 29 May 2018
(This article belongs to the Special Issue Mesoporous Silica Catalysts)
The active combustion catalyst that is based on 30 wt % cobalt oxide on mesoporous SBA-15 has been tested in 1,2-dichloropropane oxidation and is characterized by means of FT-IR (Fourier transform infrared spectroscopy) and ammonia-TPD (temperature-programmed desorption). In this work, we report the spectroscopic evidence for the role of surface acidity in chloroalkane conversion. Both Lewis acidity and weakly acidic silanol groups from SBA support are involved in the adsorption and initial conversion steps. Moreover, total oxidation reaction results in the formation of new Bronsted acidic sites, which are likely associated with the generation of HCl at high temperature and its adsorption at the catalyst surface. Highly dispersed Co oxide on the mesoporous support and Co-chloride or oxychloride particles, together with the presence of several families of acidic sites originated from the conditioning effect of reaction products may explain the good activity of this catalyst in the oxidation of Chlorinated Volatile Organic Compounds. View Full-Text
Keywords: surface characterization; FT-IR spectroscopy; cobalt oxide; SBA-15; Cl-VOC oxidation surface characterization; FT-IR spectroscopy; cobalt oxide; SBA-15; Cl-VOC oxidation
Show Figures

Figure 1

MDPI and ACS Style

Finocchio, E.; Gonzalez-Prior, J.; Gutierrez-Ortiz, J.I.; Lopez-Fonseca, R.; Busca, G.; De Rivas, B. Surface Characterization of Mesoporous CoOx/SBA-15 Catalyst upon 1,2-Dichloropropane Oxidation. Materials 2018, 11, 912.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop