The need to provide the U.S. market with a renewable liquid fuel energy source from a non-food feedstock stream has gained considerable traction due to benefits such as improved energy efficiency, reduced environmental impacts, and enhanced national security. Practical achievement of these goals via biomass and bio-waste utilization involves production of liquid intermediates containing corrosive, reactive species like carboxylic acids, ketones, aldehydes, and hydroxyaldehydes. Such mixtures challenge materials of containment, processing, and transport. It is widely recognized that the smaller organic acids, such as acetic and formic, are corrosive and can remove protective surface oxides on alloys used in bio-oil processing infrastructure, and ketones can swell sealing polymers. However, literature shows, and findings herein confirm, larger carboxylic acids and bidentate alcohols are present. This highlights the potential for synergistic, detrimental effects of constituents in bio-oil corrosion, including direct reactivity of small acids compounded with the possibility of mobilization of protective metal oxide layers via chelation by larger acids and oxygenates. The question of whether species beyond small acids can significantly contribute to corrosion requires analytical approaches previously not applied to bio-oil corrosion studies and certainly not previously applied corroboratively. This work introduces a combination of optical, mass spectral, and electrochemical impedance spectroscopies with an incubation approach to study metal mobilization, to facilitate elucidating chelation's role in bio-oil corrosive pathways. To enable systematic study of these oxygenates' material compatibility individually and in combination, a model matrix of bio-oil constituents was also developed based on identification of key components of real bio-oils.

由于具有诸如提高能源效率，减少环境影响和增强国家安全之类的好处，需要从非食品原料流向美国市场提供可再生液体燃料能源的需求已受到了广泛的关注。通过生物质和生物废物利用来实际实现这些目标涉及生产含有腐蚀性，反应性物质（例如羧酸，酮，醛和羟醛）的液体中间体。这种混合物挑战了围堵，加工和运输的材料。众所周知，较小的有机酸（例如乙酸和甲酸）具有腐蚀性，可以去除生物油加工基础设施所用合金上的保护性表面氧化物，而酮则可以使密封聚合物膨胀。但是，文献表明，本文的发现证实，存在较大的羧酸和双齿醇。这突出了在生物油腐蚀中各成分产生协同有害作用的潜力，包括小酸的直接反应性，以及通过较大的酸和含氧化合物的螯合而使保护性金属氧化物层动员的可能性。除小酸以外的其他物种是否会显着促进腐蚀，这一问题要求以前没有用于生物油腐蚀研究的分析方法，当然也没有以前经过证实的分析方法。这项工作引入了光学，质谱和电化学阻抗谱的结合，以及一种研究金属动员的孵化方法，以促进阐明螯合在生物油腐蚀途径中的作用。为了能够系统地研究这些含氧化合物