Bu Qingguo, Wang Jian, Chen Yuxuan, Tao Junyu, Kumar Akash, Yan Beibei, Chen Guanyi
School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China.
China Energy Conservation and Environment Protection Engineering Co., Ltd., Beijing 100082, China.
Molecules. 2024 Nov 25;29(23):5565. doi: 10.3390/molecules29235565.
Aqueous-phase reforming (APR) is an alternative method for treating and utilizing biogas slurry (BS) to produce renewable hydrogen from organic oxygen-containing wastewater. Considering the fluctuating characteristics of BS with changes in the degree of fermentation, developing an efficient catalyst is a major concern for the APR of BS. The novel catalyst based on molybdenum-based metal-organic-framework-derived oxides (Mo-MOF-derived α-MoO) was reported in this study. The results indicated that the variables (e.g., pH, organic load, and salinity) of BS corresponded to the fermentation times and exhibited decreasing trends after APR under the reaction conditions of 225 °C and 30 min. Decarboxylation was identified as the main side reaction in the APR of BS over the catalyst. An optimal yield of 2.17 mL/mL was achieved when BS was obtained from 6 days of fermentation. Finally, the Mo-MOF-derived α-MoO catalyst was obtained from the greater specific surface area of MOFs. The catalyst had a weaker acidity than the initial α-MoO, making it more preferred for facilitating the APR of BS.
水相重整（APR）是一种处理和利用沼液（BS）从有机含氧废水中生产可再生氢气的替代方法。考虑到沼液随发酵程度变化的波动特性，开发一种高效催化剂是沼液水相重整的主要关注点。本研究报道了一种基于钼基金属有机骨架衍生氧化物（Mo-MOF衍生的α-MoO）的新型催化剂。结果表明，沼液的变量（如pH值、有机负荷和盐度）与发酵时间相对应，在225℃和30分钟的反应条件下水相重整后呈下降趋势。脱羧反应被确定为该催化剂催化沼液水相重整过程中的主要副反应。当沼液来自6天的发酵时，实现了2.17 mL/mL的最佳产率。最后，Mo-MOF衍生的α-MoO催化剂得益于金属有机骨架更大的比表面积。该催化剂的酸度比初始的α-MoO弱，使其更有利于促进沼液的水相重整。
