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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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PALLADIUM-CATALYZED SYNTHESIS OF N,N'-DIPHENYLUREA FROM NITROBENZENE, ANILINE, AND CARBON-MONOXIDE

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Title
PALLADIUM-CATALYZED SYNTHESIS OF N,N'-DIPHENYLUREA FROM NITROBENZENE, ANILINE, AND CARBON-MONOXIDE
Other Titles
PALLADIUM-CATALYZED SYNTHESIS OF N,N'-DIPHENYLUREA FROM NITROBENZENE, ANILINE, AND CARBON-MONOXIDE
Author
OH, Jae SeungLEE, Sang MooYEO, Jong KeeLEE, Chul WooLee, Jae Sung
Keywords
AMINES; CARBONYLATION; PRESSURE
Issue Date
1991-07
Publisher
AMER CHEMICAL SOC
Citation
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v.30, no.7, pp.1456 - 1461
Abstract
N,N'-Diphenylurea has been synthesized from nitrobenzene, aniline, and carbon monoxide in a batch reactor at 80-160-degrees-C and 15-75 bar. Homogeneous catalyst systems consisting of a palladium(II) salt, an onium salt, and triphenylphosphine dissolved in xylene or toluene were found to be highly efficient, giving isolated urea yields up to 98% at 100% nitrobenzene conversion. The effects of catalyst composition and other reaction variables were studied. The reaction consumed more aniline than nitrobenzene on a molar basis, suggesting the existence of a new reaction path in addition to the well-known path of the reaction consuming equimolar nitrobenzene and aniline. The presence of excess aniline was essential in order to reuse the catalyst system for new batches without appreciable loss of activity
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DOI
10.1021/ie00055a009
ISSN
0888-5885
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ECHE_Journal Papers
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