Eco-friendly controllable synthesis of highly dispersed ZIF-8 embedded in porous Al2O3 and its hydrogenation properties after encapsulating Pt nanoparticles
Eco-friendly controllable synthesis of highly dispersed ZIF-8 embedded in porous Al2O3 and its hydrogenation properties after encapsulating Pt nanoparticles
复制标题
多孔Al2O3中高分散ZIF-8的环保可控合成及其包覆Pt纳米粒子后的加氢性能
DOI:
10.1016/j.apcatb.2018.01.022
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发表时间:
2018-07
期刊:
影响因子:
--
通讯作者:
Wei Li
中科院分区:
文献类型:
--
作者:
Xiaoyun Song;Qingxin Guan;Zitao Cheng;Wei Li
In this paper, a new strategy was proposed to synthesize a novel composite of highly dispersed ZIF-8 embedded in porous Al2O3by a solvent-free method. This is a very simple, efficient, and eco-friendly method, in which ZnO/Al2O3was used as a precursor, and dimethyl imidazole was used as an organic ligand. Meso- and microporous composite of ZIF-8@Al2O3was synthesized arising from the crystal growth of ZIF-8 derived from ZnO nanoparticles. Characterization results reveal that the distribution of micropores and mesopores can be controlled by simply adjusting the amount of zinc salt supported on Al2O3. The value of this composite is that it can simultaneously exert the advantages of ZIF-8 and Al2O3support, which can significantly decrease the particle size of ZIF-8 and improve its utilization efficiency. The micropores of ZIF-8 can increase the dispersion of Pt nanoparticles, at the same time, the functional groups on the surface of Al2O3can improve the selectivity of the product. Furthermore, this kind of composite material can be extended by replacing the support. Finally, the results of the activity tests showed that the obtained Pt/ZIF-8@Al2O3catalyst exhibits high activity and selectivity in hydrodearomatization (HDA) and hydrodeoxygenation (HDO) reactions.
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