Hydrogen production by partial oxidation gasification of a phenol, naphthalene, and acetic acid mixture in supercritical water
Hydrogen production by partial oxidation gasification of a phenol, naphthalene, and acetic acid mixture in supercritical water
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DOI：
10.1016/j.ijhydene.2015.12.115
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发表时间：
2016-01
影响因子：
7.2
通讯作者：
Yuzhen Wang;Shuzhong Wang;Gaoyang Zhao;Yanfeng Guo;Yang Guo
中科院分区：
文献类型：
--
作者：
Yuzhen Wang;Shuzhong Wang;Gaoyang Zhao;Yanfeng Guo;Yang Guo
苯酚、乙酸和萘的混合物在超临界水中部分氧化以产生氢气。研究了反应温度、氧化比、反应时间和反应物浓度对气体分布、气化效率和反应物脱除效率的影响。分析了氧气对主要中间产物的影响，并提出了可能的降解途径。结果表明，较高的温度显著提高了H2产率。此外，少量的氧气（OR <0.2）促进了H2和CH 4的产生。当反应温度为560 °C、压力为25 MPa、反应时间为20 s、OR为0.2时，H2气化效率最高，为240.25%，H2产率最高，为70.16 mmol g−1。在10 s内，反应时间越长，气化效率越高，而反应时间超过10 s后，气化效率的提高幅度就越小。反应物的浓度没有显着影响气化效率。
A mixture of phenol, acetic acid, and naphthalene was partially oxidized in supercritical water in order to produce hydrogen. The effects of temperature, oxidation ratio (OR), reaction time, and reactant concentrations on gaseous distributions, gasification efficiencies, and reactants removal efficiencies were investigated. Furthermore, the effects of oxygen on the main intermediate products were analyzed, and possible degradation pathways were proposed. Results indicated that higher temperatures significantly promoted the H2yield. In addition, small amounts of oxygen (OR <0.2) accelerated the production of H2and CH4. The maximum H2gasification efficiency (240.25%) and H2yield (70.16 mmol g−1) were obtained at 560 °C, 25 MPa, reaction time of 20 s and OR of 0.2. Longer reaction time enhanced the gasification efficiencies in 10 s, while the effect was little when reaction times longer than 10 s. The concentrations of the reactants did not significantly influence the gasification efficiencies.