Hairy bamboo leaf extract as an eco-friendly corrosion inhibitor for L245N steel in CO2-saturated oilfield produced water
Author:
He San1, Xue Shiqi1, Xu Huilan2, Li Bin1, Li Jianfeng3
Affiliation:
1. Petroleum Engineering School , Southwest Petroleum University , Chengdu 610500 , China 2. Sinopec Xinan Oil and Gas Field Branch , Chengdu , Sichuan 646002 , China 3. Southwest Oil & Gas Field Company, PetroChina , Chengdu , Sichuan 646002 , China
Abstract
Abstract
The inhibition of the corrosion of L245N steel in the CO2-saturated oilfield produced water by the extract of hairy bamboo leaf extract (BLE) has been investigated using electrochemical experiment (EIS), weight loss test, Fourier transform infrared spectroscopy (FTIR), molecular dynamics simulation (MD), and scanning electron microscopy (SEM). The results showed adsorption of BLE on the surface of L245N steel conforms to the Langmuir isothermal adsorption. Electrochemical measurements indicated the maximum inhibition efficiency of 98.76 % at 45 °C and 4 (%v/v). FTIR analysis showed that the BLE contains functional moieties such as O–H, N–H, C=O, C=C, C–N, C–O, and orientin as the effective compound. SEM illustrated that with the addition of BLE, the corrosion of L245N metal is significantly reduced. MD simulation showed that BLE molecules tend to adsorb on the Fe surface, forming an inhibitor film.
Funder
Department of Science and Technology of Sichuan Province State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
Publisher
Walter de Gruyter GmbH
Subject
General Materials Science,General Chemical Engineering,General Chemistry
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