Oxygen-deficient metal oxides supported nano-intermetallic InNi(3)C(0.5) toward efficient CO(2) hydrogenation to methanol.
Oxygen-deficient metal oxides supported nano-intermetallic InNi(3)C(0.5) toward efficient CO(2) hydrogenation to methanol.
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缺氧金属氧化物支持纳米金属间化合物InNi3C0.5实现高效CO2加氢制甲醇
DOI:
10.1126/sciadv.abi6012
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发表时间:
2021-08
期刊:
影响因子:
13.6
通讯作者:
Lu Y
中科院分区:
文献类型:
--
作者:
Meng C;Zhao G;Shi XR;Chen P;Liu Y;Lu Y
Oxygen-deficient oxide supports enhance the electron density of InNi3C0.5, enabling efficient CO2 hydrogenation to methanol. Direct CO2 hydrogenation to methanol using renewable energy–generated hydrogen is attracting intensive attention, but qualifying catalysts represents a grand challenge. Pure-/multi-metallic systems used for this task usually have low catalytic activity. Here, we tailored a highly active and selective InNi3C0.5/ZrO2 catalyst by tuning the performance-relevant electronic metal-support interaction (EMSI), which is tightly linked with the ZrO2 type–dependent oxygen deficiency. Highly oxygen-deficient monoclinic-ZrO2 support imparts high electron density to InNi3C0.5 because of the considerably enhanced EMSI, thereby enabling InNi3C0.5/monoclinic-ZrO2 with an intrinsic activity three or two times as high as that of InNi3C0.5/amorphous-ZrO2 or InNi3C0.5/tetragonal-ZrO2. The EMSI-governed catalysis observed in the InNi3C0.5/ZrO2 system is extendable to other oxygen-deficient metal oxides, in particular InNi3C0.5/Fe3O4, achieving 25.7% CO2 conversion with 90.2% methanol selectivity at 325°C, 6.0 MPa, 36,000 ml gcat−1 hour−1, and H2/CO2 = 10:1. This affordable catalyst is stable for at least 500 hours and is also highly resistant to sulfur poisoning.
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