Hydrogen Production from Ethanol Using a Plasma Reactor with an Alumite Catalyst Electrode
Hydrogen Production from Ethanol Using a Plasma Reactor with an Alumite Catalyst Electrode
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使用带有氧化铝催化剂电极的等离子体反应器从乙醇生产氢气
DOI：
10.1252/jcej.39.216
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发表时间：
2006
影响因子：
0.8
通讯作者：
H. Kameyama
中科院分区：
文献类型：
--
作者：
Yasukazu Iwasaki;Junqiang Liu;Jie Zhang;T. Kitajima;M. Sakurai;H. Kameyama
为了开发用于质子交换膜燃料电池（PEMFC）系统和其它应用的非平衡反应器，使用与催化剂组合的非平衡等离子体反应器从乙醇制氢，所述催化剂由氧化铝催化剂电极组成，在AC或脉冲放电条件下，在160-300°C的温度范围内在大气压下进行。平衡等离子体和催化剂对交流放电下乙醇转化率有协同作用。比如说，用具有氧化铝催化剂的等离子体反应器获得的乙醇转化率（Cu-Ni/γ-Al_2O_3）电极在有效电压为3 kV、频率为2kHz的交流放电条件下的乙醇转化率是用无阴极等离子体反应器获得的乙醇转化率的算术和的2.4倍。在相同的放电条件下，使用氧化铝催化剂（Cu-Ni/γ-Al 2 O3）电极在210 ℃下获得的乙醇转化率与使用氧化铝催化剂（Cu-Ni/γ-Al 2 O3）电极在没有任何放电的情况下获得的乙醇转化率进行比较。实验还发现，在脉冲放电条件下，非平衡等离子体和催化剂对乙醇转化率有协同作用。比如说，用具有氧化铝催化剂的等离子体反应器获得的乙醇转化率（Cu-Ni/γ-Al 2 O3）电极在峰间电压7.2 kV、脉冲数5000 s-1的脉冲放电条件下的乙醇转化率是用非等离子体反应器获得的乙醇转化率的算术和的1.9倍。催化氧化铝电极在相同的放电条件下和用氧化铝催化剂获得的乙醇转化率（Cu-Ni/γ-Al 2 O3）电极在180°C下没有任何放电。能量效率，其被定义为每单位电力消耗产生的氢气的摩尔数，在270°C下，在2kHz、3 kV有效电压的AC放电条件下，用明矾石催化剂（Cu-Ni/γ-Al 2 O3）电极获得的氧化还原性是在270 ° C下在相同放电条件下用非催化明矾石电极获得的氧化还原性的2.9倍。在270°C、脉冲数为5000 s-1、峰-峰电压为7.2 kV的脉冲放电条件下，用氧化铝催化剂（Cu-Ni/γ-Al 2 O3）电极获得的能量效率比在270° C、相同放电条件下用非催化氧化铝电极获得的能量效率高2.6倍。使用氧化铝催化剂获得的能量效率（Cu-Ni/γ-Al 2 O3）电极在270°C下在脉冲放电、脉冲数为5000 s-1和峰-峰电压为7.2 kV的条件下获得的电性能是在AC放电条件下获得的电性能的2.7倍，由于催化剂和非平衡等离子体的协同活性，能量效率和转化率大大提高。这些结果表明，开发一个非平衡反应器使用氧化铝催化剂电极的潜力。
With the aim of developing a non-equilibrium reactor for proton exchange membrane fuel cell (PEMFC) systems and other applications, hydrogen was produced from ethanol using a non-equilibrium plasma reactor combined with a catalyst, which consisted of an alumite catalyst electrode, at atmospheric pressure in a temperature range of 160–300°C under an AC or a pulsed discharge condition.It was found that non-equilibrium plasma and a catalyst had a synergistic effect on the ethanol conversion rate under an AC discharge. For example, the ethanol conversion rate obtained with the plasma reactor with the alumite catalyst (Cu-Ni/γ-Al2O3) electrode under an AC discharge condition of 3 kV of effective voltage at 2 kHz was 2.4 times as large as the arithmetic sum of the ethanol conversion rate obtained with the plasma reactor with a non-catalytic alumite electrode under the same discharge conditions and the ethanol conversion rate obtained with the alumite catalyst (Cu-Ni/γ-Al2O3) electrode without any discharge, at 210°C. It was also observed that non-equilibrium plasma and a catalyst had a synergistic effect on the ethanol conversion rate under a pulsed discharge. For example, the ethanol conversion rate obtained with the plasma reactor with the alumite catalyst (Cu-Ni/γ-Al2O3) electrode under a pulsed discharge of 7.2 kV of peak-to-peak voltage at a pulse number of 5000 s–1 was 1.9 times as large as the arithmetic sum of the ethanol conversion rate obtained with the plasma reactor with the non-catalytic alumite electrode under the same discharge conditions and the ethanol conversion rate obtained with the alumite catalyst (Cu-Ni/γ-Al2O3) electrode without any discharge, at 180°C.The energy efficiency, which was defined as mols of hydrogen produced per unit electric power consumption, obtained with the alumite catalyst (Cu-Ni/γ-Al2O3) electrode at 270°C under conditions of an AC discharge of 3 kV of effective voltage at 2 kHz was 2.9 times higher than that obtained with the non-catalytic alumite electrode at 270°C under the same discharge conditions. The energy efficiency obtained with the alumite catalyst (Cu-Ni/γ-Al2O3) electrode at 270°C under conditions of a pulsed discharge, pulse number of 5000 s–1 and peak-to-peak voltage of 7.2 kV was 2.6 times higher than that obtained with the non-catalytic alumite electrode at 270°C under the same discharge conditions. And the energy efficiency obtained with the alumite catalyst (Cu-Ni/γ-Al2O3) electrode at 270°C under conditions of a pulsed discharge, pulse number of 5000 s–1 and peak-to-peak voltage of 7.2 kV was 2.7 times higher than that obtained under conditions of an AC discharge, frequency of 2 kHz and effective voltage of 3 kV.The energy efficiency and the conversion rate increased greatly because of the collaborative activity of the catalyst and non-equilibrium plasma. These results indicate the potential for developing a non-equilibrium reactor using an alumite catalyst electrode.
使用非平衡脉冲放电直接转化甲烷（有催化剂和无催化剂）
DOI：
--
发表时间：
2003
期刊：
Them.Sci.Eng. 11(2)
影响因子：
--
作者：
S.Kado;K.Urasaki;Y.Sekine;K.Fujimoto
通讯作者：
K.Fujimoto