Direct solar thermochemical conversion of methanol into syngas via nanocatalysts at lower temperatures,Sustainable Energy & Fuels

当前位置： X-MOL 学术 › Sustain. Energy Fuels › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Direct solar thermochemical conversion of methanol into syngas via nanocatalysts at lower temperatures
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2020/01/02 , DOI: 10.1039/c9se01227c
Jia Zeng _{1,

2,

3,

4} , Xiaoxiao Yu _{1,

4,

5,

6} , Yimin Xuan _{1,

1,

2,

3,

4} , Qiang Li _{1,

2,

3,

4} , Dong Liu _{1,

2,

3,

4}

Affiliation

Solar thermochemical conversion is an effective way to store unstable solar energy as chemical energy in fuels; and thus, it is of great significance in the clean energy economy. Using thermochemical catalysts as the solar energy absorber directly is an advanced way to achieve high efficiency because of the cancellation of the heat resistance resulting from the heat transfer between the solar absorber and the catalyst. In this work, the photo-thermal conversion mechanism of catalyst nanoparticles in solar thermochemical processes was investigated theoretically as the first step. The multi-step temperature variations of catalyst nanoparticles with time were demonstrated. The results show that the direct solar thermochemical conversion performance is significantly enhanced by using nano-sized catalysts. Then, a CuO/ZnO/Al₂O₃ nanocatalyst was synthesized and utilized in a customized low-cost experimental system for the direct solar methanol decomposition. Compared with conventional systems, ours requires a lower solar concentration ratio and a lower system temperature and can be easily controlled to adjust the methanol supply rate to realize optimal solar energy utilization efficiency.

中文翻译：

在较低温度下通过纳米催化剂将甲醇直接太阳能热化学转化为合成气

太阳能热化学转化是将不稳定的太阳能作为化学能存储在燃料中的有效方法。因此，在清洁能源经济中具有重要意义。直接使用热化学催化剂作为太阳能吸收剂是获得高效率的一种先进方法，因为抵消了由太阳能吸收剂和催化剂之间的热传递导致的耐热性。在这项工作中，作为第一步，理论上研究了太阳能热化学过程中催化剂纳米颗粒的光热转化机理。证明了催化剂纳米颗粒随时间的多步温度变化。结果表明，使用纳米级催化剂可显着提高直接太阳热化学转化性能。然后，CuO / ZnO / Al ₂合成了O ₃纳米催化剂，并将其用于定制的低成本实验系统中，以直接进行太阳甲醇的分解。与传统系统相比，我们的系统需要较低的太阳能集中度和较低的系统温度，并且可以轻松控制以调节甲醇的供应速率，以实现最佳的太阳能利用效率。

更新日期：2020-03-31

点击分享查看原文

点击收藏

阅读更多本刊最新论文