| HE San,XU Hui-lan,ZHANG Jian-xiong,WANG Chuan-jun,WANG Kun,YANG Wen,ZHAO Zhi-chao.Research Progress of Plant Corrosion Inhibitors in CO2 Environment[J],50(1):187-195, 220 |
| Research Progress of Plant Corrosion Inhibitors in CO2 Environment |
| Received:March 03, 2020 Revised:December 11, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.01.015 |
| KeyWord:plant corrosion inhibitor CO2 environment component analysis extraction method synergy corrosion inhibition mechanism |
| Author | Institution |
| HE San |
Southwest Petroleum University, Chengdu , China |
| XU Hui-lan |
Southwest Petroleum University, Chengdu , China |
| ZHANG Jian-xiong |
Southwest Petroleum University, Chengdu , China |
| WANG Chuan-jun |
Tianjin Branch of CNOOC China Co., Ltd, Tianjin , China |
| WANG Kun |
Sinopec Chongqing Natural Gas Pipeline Co., Ltd, Chongqing , China |
| YANG Wen |
Sinopec Chongqing Natural Gas Pipeline Co., Ltd, Chongqing , China |
| ZHAO Zhi-chao |
Sinopec Chongqing Natural Gas Pipeline Co., Ltd, Chongqing , China |
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| Abstract: |
| As a metal corrosion inhibitor, plant extracts have the characteristics of low cost, non-toxicity, no pollution, and high corrosion inhibition efficiency, and have received widespread attention in recent years. In this paper, the research progress of plant corrosion inhibitors in CO2 environment is reviewed, and the advantages of plant corrosion inhibitors in anticorrosion is briefly described. The methods of analyzing and extracting effective corrosion-inhibiting ingredients of plants are summarized. It is found that most of the active ingredients with corrosion inhibition have lone electron pairs, of which the functional groups contain oxygen atoms, conjugated double bonds or aromatic rings. Meanwhile, based on the extraction method of conventional solvent, the introduction of ultrasonic, microwave and supercritical fluid extraction can effectively improve the corrosion inhibition efficiency of plant corrosion inhibitors. The addition of Zn2+, I− or nanomaterials to plant corrosion inhibitors shows a synergistic effect. Besides, the mechanism of plant corrosion inhibitors is described here. The existing plant corrosion inhibitors are mainly film-forming types, and their mechanisms include physical adsorption, chemical adsorption and mixed adsorption. Finally, the future research directions and development trends of plant corrosion inhibitors are prospected. In order to further verify the safety of the plants used, it is necessary to conduct experiments on their toxicity, bioaccumulation and biodegradability. Using quantum chemical calculation methods, molecular dynamics (MD), and Monte Carlo methods (MC), etc. to calculate the chemical properties of plant extracts reasonably is also one of the research directions in the future. |
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