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<p>One of the most important and demanding compounds is cyclohexanol, along with its alkyl derivatives. Nowadays, cyclohexanes are produced from fossil-sourced benzene and its derivatives—being oxidized to produce cyclohexanols for commercial use. This study includes the hydrodeoxygenation (HDO) of cotton stalks bio-oil to produce cyclohexanols. The two methods, i.e., pyrolysis and reductive catalytic fractionation (RCF), to obtain bio-oil were processed for the production of cyclohexanols. The HDO was performed using hydrous ruthenium oxide deposited on the HY zeolite (HRO@HY) catalyst at various reaction conditions. Conversion and selectivity of pyrolysis bio-oil were found to be lower than reductive catalytic fractionated bio-oil at all the reaction conditions, which might be due to the presence of aldehydes, ketones, and acids in pyrolysis bio-oil. 4-Propylcyclohexanol contributed the maximum to the product distribution. Maximum conversion of 90% and 95% was achieved for PB and RCFB, respectively, under optimal reaction conditions.</p> Graphical abstract <p></p>

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Reductive catalytic upgradation of bio-oil obtained through pyrolysis and RCF processes: a comparative study

  • 期刊论文

  • 发表日期：

    2025年1月17日

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  • Meenu Jindal,
  • Priyanka Uniyal,
  • Thallada Bhaskar

摘要

One of the most important and demanding compounds is cyclohexanol, along with its alkyl derivatives. Nowadays, cyclohexanes are produced from fossil-sourced benzene and its derivatives—being oxidized to produce cyclohexanols for commercial use. This study includes the hydrodeoxygenation (HDO) of cotton stalks bio-oil to produce cyclohexanols. The two methods, i.e., pyrolysis and reductive catalytic fractionation (RCF), to obtain bio-oil were processed for the production of cyclohexanols. The HDO was performed using hydrous ruthenium oxide deposited on the HY zeolite (HRO@HY) catalyst at various reaction conditions. Conversion and selectivity of pyrolysis bio-oil were found to be lower than reductive catalytic fractionated bio-oil at all the reaction conditions, which might be due to the presence of aldehydes, ketones, and acids in pyrolysis bio-oil. 4-Propylcyclohexanol contributed the maximum to the product distribution. Maximum conversion of 90% and 95% was achieved for PB and RCFB, respectively, under optimal reaction conditions.

Graphical abstract