Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Nat Commun. 2017 May 2;8:15174. doi: 10.1038/ncomms15174.
The direct production of liquid fuels from CO hydrogenation has attracted enormous interest for its significant roles in mitigating CO emissions and reducing dependence on petrochemicals. Here we report a highly efficient, stable and multifunctional Na-FeO/HZSM-5 catalyst, which can directly convert CO to gasoline-range (C-C) hydrocarbons with selectivity up to 78% of all hydrocarbons while only 4% methane at a CO conversion of 22% under industrial relevant conditions. It is achieved by a multifunctional catalyst providing three types of active sites (FeO, FeC and acid sites), which cooperatively catalyse a tandem reaction. More significantly, the appropriate proximity of three types of active sites plays a crucial role in the successive and synergetic catalytic conversion of CO to gasoline. The multifunctional catalyst, exhibiting a remarkable stability for 1,000 h on stream, definitely has the potential to be a promising industrial catalyst for CO utilization to liquid fuels.
从 CO 加氢直接生产液体燃料因其在减少 CO 排放和降低对石化燃料依赖方面的重要作用而引起了极大的关注。在这里，我们报道了一种高效、稳定的多功能 Na-FeO/HZSM-5 催化剂，在工业相关条件下，当 CO 转化率为 22%时，该催化剂可以将 CO 直接转化为汽油范围（C-C）烃，其中所有烃的选择性高达 78%，而甲烷仅为 4%。这是通过提供三种类型的活性位（FeO、FeC 和酸位）的多功能催化剂实现的，这三种活性位协同催化串联反应。更重要的是，三种类型的活性位的适当接近在 CO 连续和协同转化为汽油的过程中起着关键作用。多功能催化剂在连续运行 1000 小时后表现出显著的稳定性，肯定有潜力成为 CO 利用液体燃料的有前途的工业催化剂。
