数字农科院2.0

Assembling Co clusters via nanosized ZIF-67 sprouted from CoAl-LDH nanoflower for selective hydrogenation

文献类型： 外文期刊

作者： Huiling Zhang;Xiaomei Zhou;Longxin Liu;Fujun Lan;Teng Zhao;Mo Qiu;Qingxin Guan;Wei Li

作者机构：

关键词： Biomass conversion;Co clusters;Multifunctional catalyst;Selective hydrogenation

期刊名称： Applied Catalysis B: Environmental

ISSN： 0926-3373

年卷期： 2023 年 338 卷

页码：

收录情况： SCIE（2023版） ; ; EI（2023版）

摘要： Atomically dispersed cluster catalysts own versatile applications in biomass valorization, while the controllable assembly and microenvironmental regulation remain a crucial challenge. Herein, Co clusters assembled via nanosized ZIF-67 sprouted from Co-Al layered double hydroxide nanoflowers were applied for selective hydrogenation of furfural (FAL). The pyrolysis temperature can tune the microstructures and acid properties of the catalyst, which accounts for the hydrogenation of FAL to furfuryl alcohol (FOL), 2-methylfuran (2-MF), and tetrahydrofurfuryl alcohol (THFOL) with yield of 99.1 %, 96.7 %, and 82.3 %, respectively. The Co clusters favor C[dbnd]O bond adsorption via bridging-type adsorption mode while suppressing the furan ring adsorption. Moreover, ultra-dispersed Co clusters facilitate the cleavage of C-OH bonds in FOL intermediate, leading to a high 2-MF yield. As the pyrolysis temperature increase, the formed Co nanoparticles are conducive to the parallel adsorption of FAL, resulting in the production of THFOL. This work affords a multi-functional catalyst in catalytic biomass upgrading.

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