SBIR Phase II: Redox Polymer Catalysts for Electrochemical Synthesis of Hydrogen Peroxide

0078383戈帕尔 这个小企业创新研究第二阶段项目将调查使用氧化还原催化剂电极通过电化学再生的氧化还原催化剂合成过氧化氢。 在第一阶段的研究中，开发了催化剂，并成功地证明了它们在过氧化物合成中的短期稳定性。用10 cm ~ 2的流动电解池在酸性条件下（1 N H_2SO_4），电流效率为60%，过氧化氢浓度可达2%。 然而，第一阶段的工作表明，这些氧化还原体系的催化电流差，以及过氧化氢浓度的上限（2%）。第二阶段的研究工作将致力于改善这些氧化还原催化剂的催化效果，通过改变制备程序，电极结构和制造技术。使用氧气/空气和几乎纯净的水（必要时调节pH值），使用流动池实验对电极进行测试和优化，以进行过氧化物合成。 将测试电极的长期稳定性（500小时）。 将使用最佳复合电极制造大电极（100 cm 2），用于长期稳定性测试和工艺优化。在第二阶段工作成功完成后，将与第三阶段合作伙伴一起将该工艺商业化。 过氧化氢是一种清洁的氧化剂，其反应产物为水，因此在许多行业中是环保的。 预计未来几年过氧化氢市场将增长近10%。 本第二阶段提案中描述的新技术（从水和空气合成过氧化氢）可用于各种应用。 这些领域包括废水处理、现场发电（用于工业和消费应用，如洗衣漂白剂等）、以及商业过氧化物生产。

0078383Gopal This Small Business Innovation Research Phase II project will investigate the use ofredox catalyst electrodes for the synthesis of hydrogen peroxide through electrochemicalregeneration of the redox catalyst. In the Phase I research, catalysts were developed andtheir short-term stability for peroxide synthesis was successfully demonstrated. Flow celloperation with 10 cm2 electrode cells showed the preparation of hydrogen peroxide inacidic condition (1N H2SO4) at 60% current efficiency and up to 2% in peroxideconcentration. However, Phase I work indicated poor catalytic current with oxygen forthese redox systems, as well as an upper limit for hydrogen peroxide concentration (2%).Phase II research effort will be directed towards improving the catalytic effect of theseredox catalysts through changes in preparative procedures, electrode structure, andfabrication technique. The electrodes will be tested and optimized for peroxide synthesisusing oxygen/air and almost pure water (pH adjusted, if necessary) using flow cellexperiments. The electrodes will be tested for long-tem stability (500 hours). Largerelectrodes (100cm2 ) will be fabricated using the best composite electrode for long-termstability testing and process optimization. Commercialization of the process will becarried out with a Phase III partner upon the successful completion of Phase II work.Potential Commercial Application of the Research Hydrogen peroxide is a clean oxidant, which reacts to form water as its reaction product.It is therefore environmentally acceptable in many industries. The market for hydrogenperoxide is expected to grow by almost 10% for the next few years. New technology(synthesis of hydrogen peroxide from water and air) described in this Phase II proposalcould be implemented for various applications. These areas include wastewater treatment, on-site generation (for industrial and consumer application such laundry bleach etc.), as well as commercial peroxide production.