Atomic zinc dispersed on graphene synthesized for active CO2 fixation to cyclic carbonates.

Atomic zinc dispersed on graphene synthesized for active CO2 fixation to cyclic carbonates.
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合成的原子锌分散在石墨烯上,用于将二氧化碳活性固定为环状碳酸酯

DOI:
10.1039/c8cc09449g
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发表时间:
2019-01
影响因子:
4.9
通讯作者:
Wang Junzhong
Wang Junzhong
中科院分区:
化学2区
文献类型:
--
作者:
Wang Congwei;Song Qingwen;Zhang Kan;Liu Ping;Wang Junying;Wang Jianmei;Zhang Hengxuan;Wang Junzhong

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将CO2固定到环状碳酸酯是重要的,但取决于催化剂。在这里,原子锌(1.62原子%)分散在石墨烯上合成的高性能杂环催化剂环氧化物和CO2的环加成反应。碳酸亚丙酯的收率和选择性分别为99%和98%,反应时间为2889 h-1。通过同步XANES、EXAFS、XPS等表征手段和性能对比测试,证实了[ZnN3.76±0.2]为活性中心。
CO2 fixation to cyclic carbonates is important but depends on the catalyst. Here, atomic zinc (1.62 at%) dispersed on graphene was synthesized as a high-performance heterocatalyst for the cycloaddition reaction of epoxides and CO2. High yield (99%) and high selectivity (98%) of propylene carbonate with a TOF of 2889 h-1 were achieved. [ZnN3.76±0.2] was the active site, which was proved by advanced characterization, including synchrotron XANES, EXAFS and XPS and comparative performance tests.
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