Towards efficient solar STEP synthesis of benzoic acid: Role of graphite electrode
Towards efficient solar STEP synthesis of benzoic acid: Role of graphite electrode
复制标题
实现苯甲酸的高效太阳能STEP合成：石墨电极的作用
DOI：
10.1016/j.solener.2015.01.009
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发表时间：
2015-03
期刊：
影响因子：
--
通讯作者：
Stuart Licht
中科院分区：
文献类型：
--
作者：
Yanji Zhu;Baohui Wang;Huaiyuan Wang;Xuelin Liu;Stuart Licht
使用铂阳极从甲苯中合成苯甲酸的太阳能热电化学工艺 (STEP) 已开发出利用全光谱太阳光的高产率和选择性。 STEP Organic 是一种基于铂电极的高效有机合成工艺。这是一个显着的缺点，因为它不具有成本效益。本文介绍了一种活性、廉价的石墨阳极的使用。功能化（老化）石墨阳极被发现对甲苯氧化转化为苯甲酸具有高反应活性。对于功能化石墨阳极，合成的苯甲酸收率在 30°C 时升至 15.1%，在 90°C 时升至 44.6%，而铂阳极的合成率分别仅为 12.4% 和 32%。通过平衡和控制太阳能-热能和太阳能-电能的转化率，实现了高转化率和化学选择性。讨论了影响反应效率和选择性的因素，实验结果证明了升高温度对该过程产率的有利影响。通过SEM、FTIR和EDS对功能化石墨阳极的作用进行了思考和分析。石墨表面生成的C单键OH、C双键O、COOH增强石墨负极活性。
Solar Thermal Electrochemical Process (STEP) synthesis of benzoic acid from toluene using a platinum anode has been developed as high yield and selectivity using the full spectrum of sunlight. STEP organic is an efficient process for organic synthesis based upon its use of a platinum electrode. This is a significant drawback as it is not cost effective. In this paper, the use of an active, inexpensive, graphite anode is introduced. The functionalized (aged) graphite anode was found to have a high reactivity for the oxidative conversion of toluene into benzoic acid. The yield of benzoic acid synthesized rises to 15.1% at 30 °C to 44.6% at 90 °C for the functionalized graphite anode, compared to only 12.4% and 32% respectively at a Pt anode. High conversion rate and chemical selectivity were achieved by balancing and controlling the rate of solar-to-thermal and solar-to-electric conversions. The factors influencing the efficiency and selectivity of the reaction are discussed, experimental results demonstrate the beneficial effect of increasing temperature on the yield for the process. The role of the functionalized graphite anode is considered and analyzed by SEM, FTIR and EDS. Graphite anode activity is enhanced by Csingle bondOH, Cdouble bondO, and COOH generated on the graphite surface.
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影响因子：
--
作者：
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通讯作者：
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影响因子：
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作者：
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