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Role of Support and Promoter in the Selective Conversion of Isophorone to 3,5-Xylenol over Chromia Catalysts

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Abstract

A detailed study has been undertaken regarding the role of support and promoter towards 3,5-xylenol selectivity improvements in the vapor-phase aromatization of isophorone. The supports used in this study include A12O3, SiO2, ZrO2, MgO and carbon-covered alumina for Cr2O3 catalysts. K2O has been used as a promoter for these catalysts. Influence of solvent during Cr2O3/MgO catalyst preparation step has also been studied. The parameters governing the aromatization selectivity observed from this study are: moderate acidic sites, coordinatively unsaturated sites of Cr2O3 and smaller crystallites of Cr2O3.

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Authors and Affiliations

  1. Catalysis and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad, 500007, India

    B. David Raju, K.S. Rama Rao, G.S. Salvapathi, P.S. Sai Prasad & P. Kanta Rao

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  1. B. David Raju
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  2. K.S. Rama Rao
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  3. G.S. Salvapathi
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  4. P.S. Sai Prasad
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David Raju, B., Rama Rao, K., Salvapathi, G. et al. Role of Support and Promoter in the Selective Conversion of Isophorone to 3,5-Xylenol over Chromia Catalysts. Topics in Catalysis 29, 167–174 (2004). https://doi.org/10.1023/B:TOCA.0000029799.19387.b7

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  • DOI: https://doi.org/10.1023/B:TOCA.0000029799.19387.b7

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