Indirect Synthesis System for Ammonia from Nitrogen and Water Using Nonthermal Plasma Under Ambient Conditions
Indirect Synthesis System for Ammonia from Nitrogen and Water Using Nonthermal Plasma Under Ambient Conditions
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常温条件下氮和水非热等离子体间接合成氨系统
DOI：
10.1007/s11090-017-9869-8
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发表时间：
2017
影响因子：
3.6
通讯作者：
Teramoto Yoshiyuki
中科院分区：
文献类型：
--
作者：
Zen Shungo;Abe Tetsuya;Teramoto Yoshiyuki
提出并论证了等离子体处理N2和H2O间接合成NH3的方法。NH3具有较高的储氢密度，是一种很有前途的储氢材料。Mg3 N2是间接合成NH3的关键原料，因为Mg3 N2在室温下与水反应容易生成NH3。因此，在本文中，我们专注于在N2气氛中的非热常压介质阻挡放电（DBD）等离子体氮化MgO生成Mg3 N2。通过间歇DBD氮化处理，同时将反应装置在水浴中冷却，估计最大Mg3 N2产生效率为93 mg/kWh。由于NH3是通过一个简单的化学反应产生的，我们的方案不会导致NH3分解等离子体，这是一个最大的关注与等离子体合成。与传统的NH3生成过程相反，该过程排放CO2并且需要高温和高压，我们的方案使NH3从N2和H2O合成而没有CO2排放。这允许在温和的条件下实现现场小规模NH3合成系统，这是未来低碳社会所必需的。
The indirect synthesis of NH3from N2and H2O through plasma processing is proposed and demonstrated. NH3is a promising hydrogen storage material because of its high hydrogen storage density. Mg3N2is a key material for indirect NH3synthesis, because the reaction of Mg3N2with water easily generates NH3at room temperature. In this paper, therefore, we focus on generating Mg3N2by nitridation of MgO with nonthermal atmospheric-pressure dielectric barrier discharge (DBD) plasma in a N2atmosphere. By intermittent DBD nitridation treatment while the reaction device was cooled in a water bath, a maximum Mg3N2generation efficiency of 93 mg/kWh was estimated. Because NH3is generated through a simple chemical reaction, our scheme does not cause NH3decomposition by plasma, which is one of the greatest concerns associated with plasma synthesis. Contrary to the conventional NH3generation process, which emits CO2and requires high temperature and pressure, our scheme enables NH3synthesis from N2and H2O without CO2emissions. This allows for an onsite small-scale NH3synthesis system to be realized under mild conditions, which is necessary for a future low-carbon society.