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HYDROXYLATION OF BENZENE BY HETEROPOLY ACIDS(SALTS)CONTAINING VANADIUM
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作者 Ru Dan HUANG Xin Hong LU Bao Jian ZHANG En Bo WANG Department of Chemistry,Northeast Normal Univeristy,Changchun 130024Jin Chang LI Jing SHI Centre of Test,Northeast Normal University,Changchun 130024 《Chinese Chemical Letters》 SCIE CAS CSCD 1993年第4期319-320,共2页
Direct hydroxylation of benzene catalyzed by vanadium-con- taining heteropoly compounds with Keggin or Dawson structure has been investigated.The effects of several factors upon the hydroxylation reaction have also be... Direct hydroxylation of benzene catalyzed by vanadium-con- taining heteropoly compounds with Keggin or Dawson structure has been investigated.The effects of several factors upon the hydroxylation reaction have also been examined.It is indicated that the highest yield of phenol reached 76%(based on H_2O_(?))with 99.4~100% selectivity. 展开更多
关键词 PH SALTS)CONTAINING VANADIUM hydroxylation of benzene BY HETEROPOLY ACIDS
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纳米孔碳负载Fe_3O_4催化剂上苯直接羟基化制苯酚(英文) 被引量:8
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作者 Pezhman ARAB Alireza BADIEI +1 位作者 Amir KOOLIVAND Ghodsi MOHAMMADI ZIARANI 《催化学报》 SCIE EI CAS CSCD 北大核心 2011年第2期258-263,共6页
Fe3O4/CMK-3 was prepared by impregnation and used as a catalyst for the direct hydroxylation of benzene to phenol with hydro-gen peroxide. The iron species in the prepared catalyst was Fe3O4 because of the partial red... Fe3O4/CMK-3 was prepared by impregnation and used as a catalyst for the direct hydroxylation of benzene to phenol with hydro-gen peroxide. The iron species in the prepared catalyst was Fe3O4 because of the partial reduction of iron(III) to iron(II) on the surface of CMK-3. The high catalytic activity of the catalyst arises from the formation of Fe3O4 on the surface of CMK-3 and the high selectivity for phenol is attributed to the consumption of excess hydroxyl radicals by CMK-3. The effect of temperature,reaction time,volume of H2O2,and amount of catalyst on the catalytic performance of the prepared catalyst were investigated. Under optimized conditions,the catalyst showed excellent catalytic performance for the hydroxylation of benzene to phenol and 18% benzene conversion was achieved with 92% selectivity for phenol and with a TOF value of 8.7 h-1. The stability of catalyst was investigated by determining its activity after the fourth run and it was found to have decreased to 80% of the fresh catalyst's activity. 展开更多
关键词 nanoporous carbon ferroferric oxide hydroxylation of benzene PHENOL
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