Influence of temperature on hydroxylation of benzene to phenol using molecular oxygen catalyzed by V/SiO2
Influence of temperature on hydroxylation of benzene to phenol using molecular oxygen catalyzed by V/SiO2
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温度对V/SiO2催化苯分子氧羟基化制苯酚的影响
DOI:
10.1016/j.catcom.2013.03.018
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发表时间:
2013-07
影响因子:
3.7
通讯作者:
Sun, Qi
中科院分区:
文献类型:
--
作者:
Du, Weidong;Chen, Gang;Shi, Lei;Sun, Qi
Effect of temperature on hydroxylation of benzene to phenol with molecular oxygen as an oxidant was studied over V/SiO2using different reductants. The V/SiO2with highly dispersed vanadium species was prepared by a sol–gel process and characterized by diffuse reflectance UV–Vis and ESR. This work shows that the onset temperature range of benzene hydroxylation and the temperature reaching the maximum phenol yield differ corresponding to each reductant. The reducing capacity of reductant can be shown by changing temperature and affects, in turn, benzene conversion, product selectivity, and the amount of leaching of V species.
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