<i>Croton lechleri</i> Extracts as Green Corrosion Inhibitors of Admiralty Brass in Hydrochloric Acid
<i>Croton lechleri,</i> commonly known as Dragon’s blood, is a tree cultivated in the northwest Amazon rainforest of Ecuador and Peru. This tree produces a deep red latex which is composed of different natural products such as phenolic compounds, alkaloids, and others. The chemical struc...
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| Format: | Article |
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MDPI AG
2021-12-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/24/7417 |
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| author | Carlos Cevallos-Morillo Pablo Cisneros-Pérez Roxana Llive Marvin Ricaurte Carlos Reinoso Miguel Angel Meneses Maria del Cisne Guamán Alex Palma-Cando |
| author_facet | Carlos Cevallos-Morillo Pablo Cisneros-Pérez Roxana Llive Marvin Ricaurte Carlos Reinoso Miguel Angel Meneses Maria del Cisne Guamán Alex Palma-Cando |
| author_sort | Carlos Cevallos-Morillo |
| collection | DOAJ |
| description | <i>Croton lechleri,</i> commonly known as Dragon’s blood, is a tree cultivated in the northwest Amazon rainforest of Ecuador and Peru. This tree produces a deep red latex which is composed of different natural products such as phenolic compounds, alkaloids, and others. The chemical structures of these natural products found in <i>C. lechleri</i> latex are promising corrosion inhibitors of admiralty brass (AB), due to the number of heteroatoms and <i>π</i> structures. In this work, three different extracts of <i>C. lechleri</i> latex were obtained, characterized phytochemically, and employed as novel green corrosion inhibitors of AB. The corrosion inhibition efficiency (IE%) was determined in an aqueous 0.5 M HCl solution by potentiodynamic polarization (Tafel plots) and electrochemical impedance spectroscopy, measuring current density and charge transfer resistance, respectively. In addition, surface characterization of AB was performed by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy techniques. Chloroform alkaloid-rich extracts resulted in IE% of 57% at 50 ppm, attributed to the formation of a layer of organic compounds on the AB surface that hindered the dezincification process. The formulation of corrosion inhibitors from <i>C. lechleri</i> latex allows for the valorization of non-edible natural sources and the diversification of the offer of green corrosion inhibitors for the chemical treatment of heat exchangers. |
| first_indexed | 2024-03-10T03:29:05Z |
| format | Article |
| id | doaj.art-3a6cb842233a4a0ebbb5ca50af537432 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T03:29:05Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-3a6cb842233a4a0ebbb5ca50af5374322023-11-23T09:43:45ZengMDPI AGMolecules1420-30492021-12-012624741710.3390/molecules26247417<i>Croton lechleri</i> Extracts as Green Corrosion Inhibitors of Admiralty Brass in Hydrochloric AcidCarlos Cevallos-Morillo0Pablo Cisneros-Pérez1Roxana Llive2Marvin Ricaurte3Carlos Reinoso4Miguel Angel Meneses5Maria del Cisne Guamán6Alex Palma-Cando7Facultad de Ciencias Químicas, Universidad Central del Ecuador, Francisco Viteri s/n y Gato Sobral, Quito 170129, EcuadorUniversidad Regional Amazónica Ikiam, Tena 150102, EcuadorUniversidad Regional Amazónica Ikiam, Tena 150102, EcuadorGrupo de Investigación Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences and Engineering, Yachay Tech University, Hda. San José s/n y Proyecto Yachay, Urcuquí 100119, EcuadorSchool of Physical Sciences and Nanotechnology, Yachay Tech University, Hda. San José s/n y Proyecto Yachay, Urcuquí 100119, EcuadorDepartamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja, Loja 110150, EcuadorDepartamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja, Loja 110150, EcuadorGrupo de Investigación Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences and Engineering, Yachay Tech University, Hda. San José s/n y Proyecto Yachay, Urcuquí 100119, Ecuador<i>Croton lechleri,</i> commonly known as Dragon’s blood, is a tree cultivated in the northwest Amazon rainforest of Ecuador and Peru. This tree produces a deep red latex which is composed of different natural products such as phenolic compounds, alkaloids, and others. The chemical structures of these natural products found in <i>C. lechleri</i> latex are promising corrosion inhibitors of admiralty brass (AB), due to the number of heteroatoms and <i>π</i> structures. In this work, three different extracts of <i>C. lechleri</i> latex were obtained, characterized phytochemically, and employed as novel green corrosion inhibitors of AB. The corrosion inhibition efficiency (IE%) was determined in an aqueous 0.5 M HCl solution by potentiodynamic polarization (Tafel plots) and electrochemical impedance spectroscopy, measuring current density and charge transfer resistance, respectively. In addition, surface characterization of AB was performed by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy techniques. Chloroform alkaloid-rich extracts resulted in IE% of 57% at 50 ppm, attributed to the formation of a layer of organic compounds on the AB surface that hindered the dezincification process. The formulation of corrosion inhibitors from <i>C. lechleri</i> latex allows for the valorization of non-edible natural sources and the diversification of the offer of green corrosion inhibitors for the chemical treatment of heat exchangers.https://www.mdpi.com/1420-3049/26/24/7417corrosion inhibition efficiencyadmiralty brassacid pickling solutiondragon’s bloodsupercritical CO<sub>2</sub> extractionelectrochemical impedance spectroscopy |
| spellingShingle | Carlos Cevallos-Morillo Pablo Cisneros-Pérez Roxana Llive Marvin Ricaurte Carlos Reinoso Miguel Angel Meneses Maria del Cisne Guamán Alex Palma-Cando <i>Croton lechleri</i> Extracts as Green Corrosion Inhibitors of Admiralty Brass in Hydrochloric Acid Molecules corrosion inhibition efficiency admiralty brass acid pickling solution dragon’s blood supercritical CO<sub>2</sub> extraction electrochemical impedance spectroscopy |
| title | <i>Croton lechleri</i> Extracts as Green Corrosion Inhibitors of Admiralty Brass in Hydrochloric Acid |
| title_full | <i>Croton lechleri</i> Extracts as Green Corrosion Inhibitors of Admiralty Brass in Hydrochloric Acid |
| title_fullStr | <i>Croton lechleri</i> Extracts as Green Corrosion Inhibitors of Admiralty Brass in Hydrochloric Acid |
| title_full_unstemmed | <i>Croton lechleri</i> Extracts as Green Corrosion Inhibitors of Admiralty Brass in Hydrochloric Acid |
| title_short | <i>Croton lechleri</i> Extracts as Green Corrosion Inhibitors of Admiralty Brass in Hydrochloric Acid |
| title_sort | i croton lechleri i extracts as green corrosion inhibitors of admiralty brass in hydrochloric acid |
| topic | corrosion inhibition efficiency admiralty brass acid pickling solution dragon’s blood supercritical CO<sub>2</sub> extraction electrochemical impedance spectroscopy |
| url | https://www.mdpi.com/1420-3049/26/24/7417 |
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