摘要
Three molecules containing morpholine, 1,4-naphthoquinone, 7-chloroquinoline<span><span><span><span><span style="font-family:;" "=""> <span style="font-family:Verdana;">and 1,3,5-triazine cores, scaffolds with recognized ant</span><span style="font-family:Verdana;">i-corrosive activity, were synthesized and had their anticorrosive activity evaluated through potentiodynamic polarization and electrochemical impedance studies. Both studies </span><span style="font-family:Verdana;">were conducted in a simulated production water medium containing </span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">150</span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">,</span></span></span></span></span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">000 mg·L</span><sup><span style="font-family:Verdana;"><span style="font-size:10.0pt;font-family:"">-</span>1</span></sup><span style="font-family:Verdana;"> Cl</span><sup><span style="font-family:Verdana;"><span style="font-size:10.0pt;font-family:"">-</span></span></sup></span></span></span></span></span><span><span><span><span><span style="font-family:;" "=""> </span></span></span></span></span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">and 5 mg·L</span><sup><span style="font-family:Verdana;"><span style="font-size:10.0pt;font-family:"">-</span>1</span></sup><span style="font-family:Verdana;"> S</span><sup><span style="font-family:Verdana;">2<span style="font-size:10.0pt;font-family:"">-</span></span></sup><span style="font-family:Verdana;">. Corrosion inhibition efficiency ranged from 6</span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">7</span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">% - 8</span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">6</span></span></span></span></span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">%, amongst which the naphthoquinone-containing derivative (compound </span><b><span style="font-family:Verdana;">1</span></b><span style="font-family:Verdana;">) was the most effective. These compounds act through formation of a protective film on the surface of AISI 316 stainless steel. Investigation of the molecular properties of the prepared inhibitors by DFT calculations revealed that the LUMO energy and chemical hardness of the molecules can be directly correlated with their inhibition efficiency.</span></span></span></span></span></span>
Three molecules containing morpholine, 1,4-naphthoquinone, 7-chloroquinoline<span><span><span><span><span style="font-family:;" "=""> <span style="font-family:Verdana;">and 1,3,5-triazine cores, scaffolds with recognized ant</span><span style="font-family:Verdana;">i-corrosive activity, were synthesized and had their anticorrosive activity evaluated through potentiodynamic polarization and electrochemical impedance studies. Both studies </span><span style="font-family:Verdana;">were conducted in a simulated production water medium containing </span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">150</span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">,</span></span></span></span></span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">000 mg·L</span><sup><span style="font-family:Verdana;"><span style="font-size:10.0pt;font-family:"">-</span>1</span></sup><span style="font-family:Verdana;"> Cl</span><sup><span style="font-family:Verdana;"><span style="font-size:10.0pt;font-family:"">-</span></span></sup></span></span></span></span></span><span><span><span><span><span style="font-family:;" "=""> </span></span></span></span></span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">and 5 mg·L</span><sup><span style="font-family:Verdana;"><span style="font-size:10.0pt;font-family:"">-</span>1</span></sup><span style="font-family:Verdana;"> S</span><sup><span style="font-family:Verdana;">2<span style="font-size:10.0pt;font-family:"">-</span></span></sup><span style="font-family:Verdana;">. Corrosion inhibition efficiency ranged from 6</span></span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">7</span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">% - 8</span></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">6</span></span></span></span></span><span><span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">%, amongst which the naphthoquinone-containing derivative (compound </span><b><span style="font-family:Verdana;">1</span></b><span style="font-family:Verdana;">) was the most effective. These compounds act through formation of a protective film on the surface of AISI 316 stainless steel. Investigation of the molecular properties of the prepared inhibitors by DFT calculations revealed that the LUMO energy and chemical hardness of the molecules can be directly correlated with their inhibition efficiency.</span></span></span></span></span></span>
作者
Regina Westphal
Jorge Welton de Souza Pina
Juliana Panceri Franco
Josimar Ribeiro
Maicon Delarmelina
Rodolfo Goetze Fiorot
José Walkimar de Mesquita Carneiro
Sandro José Greco
Regina Westphal;Jorge Welton de Souza Pina;Juliana Panceri Franco;Josimar Ribeiro;Maicon Delarmelina;Rodolfo Goetze Fiorot;José Walkimar de Mesquita Carneiro;Sandro José Greco(Laboratório de Síntese Organica Aplicada, Departamento de Química, Universidade Federal do Espírito Santo, Vitória, Brasil;Laboratório de Pesquisa e Desenvolvimento em Eletroquímica, Departamento de Química, Universidade Federal do Espírito Santo, Vitória, Brasil;Laboratório de Química Computacional, Instituto de Química, Universidade Federal Fluminense, Niterói, Brasil;Today at School of Chemistry, Cardiff University, Cardiff, United Kingdom)