Co3O4-Al2O3 mesoporous hollow spheres as efficient catalyst for Fischer-Tropsch synthesis
Co3O4-Al2O3 mesoporous hollow spheres as efficient catalyst for Fischer-Tropsch synthesis
复制标题
Co3O4-Al2O3介孔空心球作为费托合成的高效催化剂
DOI：
10.1016/j.apcatb.2017.04.036
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发表时间：
2017-08-15
影响因子：
22.1
通讯作者：
Yan, Chun-Hua
中科院分区：
文献类型：
--
作者：
Fu, Xin-Pu;Shen, Qi-Kai;Yan, Chun-Hua
具有多孔中空结构的纳米混合金属氧化物由于其优异的催化性能，在环境催化领域具有广阔的应用前景。然而，这种介孔结构的简单制造仍然具有挑战性。本文采用瞬态气溶胶辅助自组装（AASA）方法，合成了由热稳定的Co3O4纳米颗粒组成的Co3O4-Al2O3介孔空心球（MHS）。制备的Co3O4-Al2O3纳米复合材料具有孔隙体积大、组装形态稳定等特点，在传质和氧化还原性能上具有明显优势。对于燃料生产中非常重要的费托合成反应，Co3O4-Al2O3 MHS在转化率、选择性和稳定性方面表现出显著的催化性能。因此，我们为制备介孔空心材料提供了一种简便、可控的方法，以实现新型混合金属氧化物纳米催化剂，这些催化剂在能源生产中具有良好的应用前景。(C) 2017 Elsevier B.V.版权所有
Nanostructured mixed metal oxides with porous hollow-interior structure hold great promise in environmental-related catalysis, owing to their excellent catalytic properties. However, facile fabrication of such mesoporous architecture is still challenging. Here, by using a transient aerosol-assisted self-assembly (AASA) method, we synthesized the Co3O4-Al2O3 mesoporous hollow spheres (MHS) composed of thermally stable Co3O4 nanoparticles partially anchored to amorphous interfacial Al2O3. The as-prepared Co3O4-Al2O3 nanocomposites displayed distinct features of large pore volume and stable assembled morphology, and thus showed significant advantages in mass transfer and redox behavior. For Fischer-Tropsch synthesis, a very important reaction in fuel production, the Co3O4-Al2O3 MHS exhibited significant catalytic performance in conversion, selectivity and stability for the desired gasoline products. Therefore, we provide a facile and controlled approach towards the preparation of mesoporous hollow materials to achieve novel mixed metal oxide nanocatalysts those are good candidates in energy-production application. (C) 2017 Elsevier B.V. All rights reserved.