Direct catalytic oxidation of benzene to phenol over metal-free graphene-based catalyst

Direct catalytic oxidation of benzene to phenol over metal-free graphene-based catalyst
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无金属石墨烯基催化剂将苯直接催化氧化为苯酚

DOI:
10.1039/c3ee23623d
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发表时间:
2013-02
期刊:
Energy & Environmental Science
影响因子:
--
通讯作者:
Ma, Ding
Ma, Ding
中科院分区:
其他
文献类型:
--
作者:
Lu, Anhui;Lu, Anhui;Ma, Ding;Ma, Ding

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我们报道了一种高效、高选择性、低温的石墨烯催化过氧化氢一步氧化苯合成苯酚的反应过程。将来自小石墨的化学转化的石墨烯(CCG)用作催化剂。苯的转化率达到18%,苯酚是唯一的产物。该催化剂可重复使用,稳定性好。通过XPS、C-K边X射线吸收光谱、苯-TPD和动力学测试,认为适度的H_2O_2活化速率、良好的苯吸附能力和对氧化反应的平衡动力学控制是无金属催化剂优异催化性能的原因。
We report an efficient, highly selective, and low temperature graphene-catalyzed reaction process for one-step oxidation of benzene to phenol with hydrogen peroxide as the oxidant. The chemically converted graphene (CCG) from small graphite was used as the catalyst. The conversion of benzene reaches 18%, with phenol being the sole product. The catalyst was reusable and very stable. By XPS, C K-edge X-ray absorption spectra, benzene-TPD, and kinetic measurements, it was concluded that the moderate H2O2 activation rate, good benzene adsorption ability, and balanced kinetic control over the oxidation reaction are responsible for the outstanding catalytic performance of the metal-free catalyst.
DOI: 10.1016/s1381-1169(98)00048-x
发表时间: 1998-12
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