Kee Choon Wee, Zheng Jia'E, Yap Wei Jie, Ou Yong Roy, Liu Yan
Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore.
Molecules. 2024 Oct 14;29(20):4867. doi: 10.3390/molecules29204867.
Hydrogen is a clean-burning fuel with water as its only by-product, yet its widespread adoption is hampered by logistical challenges. Liquid organic hydrogen carriers, such as alcohols from sustainable sources, can be converted to hydrogen through aqueous-phase reforming (APR), a promising technology that bypasses the energy-intensive vaporization of feedstocks. However, the hydrothermal conditions of APR pose significant challenges to catalyst stability, which is crucial for its industrial deployment. This review focuses on the stability of catalysts in APR, particularly in sustaining hydrogen production over extended durations or multiple reaction cycles. Additionally, we explore the potential of ultrasound-assisted APR, where sonolysis enables hydrogen production without external heating. Although the technological readiness of ultrasound-assisted or -induced APR currently trails behind thermal APR, the development of catalysts optimized for ultrasound use may unlock new possibilities in the efficient hydrogen production from alcohols.
氢气是一种清洁燃烧的燃料，其唯一的副产品是水，然而，其广泛应用受到物流挑战的阻碍。液态有机氢载体，如来自可持续来源的醇类，可以通过水相重整（APR）转化为氢气，这是一项很有前景的技术，它绕过了原料能源密集型的汽化过程。然而，水相重整的水热条件对催化剂稳定性提出了重大挑战，而催化剂稳定性对其工业应用至关重要。本综述重点关注水相重整中催化剂的稳定性，特别是在长时间或多个反应循环中维持氢气生产方面。此外，我们还探讨了超声辅助水相重整的潜力，其中声分解能够在无需外部加热的情况下制氢。尽管超声辅助或诱导水相重整的技术成熟度目前落后于热催化水相重整，但针对超声应用优化的催化剂的开发可能会为从醇类高效制氢带来新的可能性。
