Direct electrolysis of waste newspaper for sustainable hydrogen production: an oxygen-functionalized porous carbon anode
Direct electrolysis of waste newspaper for sustainable hydrogen production: an oxygen-functionalized porous carbon anode
复制标题
DOI：
10.1016/j.apcatb.2018.03.021
复制
发表时间：
2018-09-05
影响因子：
22.1
通讯作者：
Teranishi, Shinya
中科院分区：
文献类型：
--
作者：
Hibino, Takashi;Kobayashi, Kazuyo;Teranishi, Shinya
生物质电解能够在小于1V的起始电压下产生氢（H-2），这取决于燃料种类。然而，制定可持续战略需要从不属于粮食类别的生物质中提取生物燃料，并采用无害环境的工艺生产。此外，生物燃料不应需要特殊和昂贵的加工程序。本文介绍了废报纸直接电解制取H-2的方法。报纸中包含的纤维素和木质素在100-175 ℃的温度范围内在阳极处的磷酸溶剂中进行溶解和水解。在低起始电压（约100 V）下，将所得分解产物电解成H-2和二氧化碳（CO2）。0.2 V）和高电流效率（H-2：1.0，CO2：0.9）。对于阳极反应，用羰基官能化的炭黑显示出比PVC催化剂更大的催化活性。H-2产率达到约. 0.2 g/lg报纸。在0.15-0.25 A cm（-2）的电流密度范围内连续产生H-2，同时在流动池中保持平台状电压行为。在电流密度为0.15 A·cm（-2）时，电解消耗的能量低至1.27 kWh（Nm（3））（-1）。
Biomass electrolysis enables hydrogen (H-2) production at onset voltages of less than 1 V, depending on the fuel species. However, biofuel derived from biomass not categorized as food and produced from environmentally friendly processes is needed for the development of sustainable strategies. In addition, the biofuel should not require special and expensive procedures for processing. The present report describes the direct electrolysis of waste newspaper for H-2 production. Cellulose and lignin included in the newspaper were subject to dissolution and hydrolysis in a phosphoric acid solvent at the anode in a temperature range of 100-175 degrees C. The resulting decomposition products were electrolyzed to H-2 and carbon dioxide (CO2), at low onset voltages (ca. 0.2 V) and high current efficiencies (H-2: 1.0, CO2: 0.9). Carbon black functionalized with carbonyl groups showed greater catalytic activity than a PVC catalyst for the anode reaction. H-2 yield reached ca. 0.2 g per 1 g of newspaper in a batch cell. H-2 was produced continuously in a current-density range of 0.15-0.25 A cm(-2) while maintaining plateau-like voltage behavior in a flow cell. The energy consumed for electrolysis at a current density of 0.15 A cm(-2) was as low as 1.27 kWh (Nm(3))(-1).