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Synthesis and anticorrosion for X70 steel of propynol derivatives in acid medium
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نویسنده
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yu q. ,jiang x. ,zhou l. ,liao y. ,duan m. ,wang h. ,pu q.
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منبع
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journal of materials and environmental science - 2014 - دوره : 5 - شماره : 1 - صفحه:13 -32
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چکیده
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1-dodecyl/tetrdecyl/hexadecyl-3-(4-hydroxybut-2-ynyl) pyridinium bromides (namely m-n) were synthesized and their inhibition capacity for x70 steel in 5 m hcl investigated by weight loss test,electrochemical methods and surface analysis technics. the results showed that m-n could efficiently protect x70 steel from corrosion with an efficiency of 99% at 40 μm and 60 μm in 5 m hcl solution. the inhibitory efficiency was almost unchanged at 30-60 μm for m-n at a concentration of 40 μm. surface morphology analysis evidenced the protective film of m-n on x70 steel surface. the adsorption of m-n obeyed the langmuir adsorption isotherm. and it was a spontaneous,exothermic and entropy driving process.
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کلیدواژه
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Corrosion inhibitor; Eis; Intramolecular synergism; Weight loss; X70 steel
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آدرس
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chemical synthesis and pollution control key laboratory of sichuan province,china west normal university,nanchong, China, chemical synthesis and pollution control key laboratory of sichuan province,china west normal university,nanchong, China, chemical synthesis and pollution control key laboratory of sichuan province,china west normal university,nanchong, China, chemical synthesis and pollution control key laboratory of sichuan province,china west normal university,nanchong, China, state key laboratory of oil and gas reservoir geology and exploitation,southwest petroleum university,chengdu, China, state key laboratory of oil and gas reservoir geology and exploitation,southwest petroleum university,chengdu, China, china petroleum engineering co.,ltd southwest company,chengdu, China
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Authors
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