Liquid-phase catalytic hydrodechlorination of perchloroethylene
The reactivity of pure hydrogen, isopropanol and formic acid as reducing agents was assessed for the liquid-phase perchloroethylene (PCE) hydrodechlorination (HDC) over 0.8% Pd/TiO2 sol-gel under mild reaction conditions. Additionally, the effect of the amount of water and sodium hydroxide added in...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universidad de Antioquia
2014-03-01
|
| Series: | Revista Facultad de Ingeniería Universidad de Antioquia |
| Subjects: | |
| Online Access: | https://revistas.udea.edu.co/index.php/ingenieria/article/view/18926 |
| _version_ | 1797861775367995392 |
|---|---|
| author | Alba Nelly Ardila-Arias Gustavo Fuentes Zurita Miguel Ángel Martínez Consuelo Montes de Correa |
| author_facet | Alba Nelly Ardila-Arias Gustavo Fuentes Zurita Miguel Ángel Martínez Consuelo Montes de Correa |
| author_sort | Alba Nelly Ardila-Arias |
| collection | DOAJ |
| description |
The reactivity of pure hydrogen, isopropanol and formic acid as reducing agents was assessed for the liquid-phase perchloroethylene (PCE) hydrodechlorination (HDC) over 0.8% Pd/TiO2 sol-gel under mild reaction conditions. Additionally, the effect of the amount of water and sodium hydroxide added into the reaction mixture were studied. Fresh and used catalysts were characterized by AAS, H2-chemisorption, N2 adsorption-desorption, DRX, H2-TPR, TGA-DTG, UV-Vis DRS, NH3-TPD and TEM. Best results were obtained with hydrogen and isopropanol as reductants. The addition of NaOH signifi cantly increases the conversion of PCE with the above reducing agents. However, an excess of NaOH negatively affects the HDC reaction. Characterization of fresh and used catalysts reveals certain changes, such as: surface area and Pd dispersion decrease, increased superfi cial acidity and Pd particle size. However, some characteristics like Pd loading, TiO2 crystalline structure and Pd oxidation state remained.
|
| first_indexed | 2024-04-09T22:08:32Z |
| format | Article |
| id | doaj.art-a172413d16f2453fbb562467bb40ca6e |
| institution | Directory Open Access Journal |
| issn | 0120-6230 2422-2844 |
| language | English |
| last_indexed | 2024-04-09T22:08:32Z |
| publishDate | 2014-03-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Revista Facultad de Ingeniería Universidad de Antioquia |
| spelling | doaj.art-a172413d16f2453fbb562467bb40ca6e2023-03-23T12:32:35ZengUniversidad de AntioquiaRevista Facultad de Ingeniería Universidad de Antioquia0120-62302422-28442014-03-014210.17533/udea.redin.18926Liquid-phase catalytic hydrodechlorination of perchloroethyleneAlba Nelly Ardila-Arias0Gustavo Fuentes Zurita1Miguel Ángel Martínez2Consuelo Montes de Correa3Universidad de AntioquiaUAM-IztapalapaUAM-IztapalapaUniversidad de Antioquia The reactivity of pure hydrogen, isopropanol and formic acid as reducing agents was assessed for the liquid-phase perchloroethylene (PCE) hydrodechlorination (HDC) over 0.8% Pd/TiO2 sol-gel under mild reaction conditions. Additionally, the effect of the amount of water and sodium hydroxide added into the reaction mixture were studied. Fresh and used catalysts were characterized by AAS, H2-chemisorption, N2 adsorption-desorption, DRX, H2-TPR, TGA-DTG, UV-Vis DRS, NH3-TPD and TEM. Best results were obtained with hydrogen and isopropanol as reductants. The addition of NaOH signifi cantly increases the conversion of PCE with the above reducing agents. However, an excess of NaOH negatively affects the HDC reaction. Characterization of fresh and used catalysts reveals certain changes, such as: surface area and Pd dispersion decrease, increased superfi cial acidity and Pd particle size. However, some characteristics like Pd loading, TiO2 crystalline structure and Pd oxidation state remained. https://revistas.udea.edu.co/index.php/ingenieria/article/view/18926catalytic hydrodechlorinationperchloroethylenepure hydrogenisopropanolformic acidpalladium |
| spellingShingle | Alba Nelly Ardila-Arias Gustavo Fuentes Zurita Miguel Ángel Martínez Consuelo Montes de Correa Liquid-phase catalytic hydrodechlorination of perchloroethylene Revista Facultad de Ingeniería Universidad de Antioquia catalytic hydrodechlorination perchloroethylene pure hydrogen isopropanol formic acid palladium |
| title | Liquid-phase catalytic hydrodechlorination of perchloroethylene |
| title_full | Liquid-phase catalytic hydrodechlorination of perchloroethylene |
| title_fullStr | Liquid-phase catalytic hydrodechlorination of perchloroethylene |
| title_full_unstemmed | Liquid-phase catalytic hydrodechlorination of perchloroethylene |
| title_short | Liquid-phase catalytic hydrodechlorination of perchloroethylene |
| title_sort | liquid phase catalytic hydrodechlorination of perchloroethylene |
| topic | catalytic hydrodechlorination perchloroethylene pure hydrogen isopropanol formic acid palladium |
| url | https://revistas.udea.edu.co/index.php/ingenieria/article/view/18926 |
| work_keys_str_mv | AT albanellyardilaarias liquidphasecatalytichydrodechlorinationofperchloroethylene AT gustavofuenteszurita liquidphasecatalytichydrodechlorinationofperchloroethylene AT miguelangelmartinez liquidphasecatalytichydrodechlorinationofperchloroethylene AT consuelomontesdecorrea liquidphasecatalytichydrodechlorinationofperchloroethylene |