The Recycling Spent Catalyst of Furfural Hydrogenation with Pressure Sulphuric Acid Leaching

Abstract:

A new recycle technology of spent catalyst from furfuryl alcohol production by furfural hydrogenation has been developed. The approach is a process of dissolution in sulphuric acid under high temperature and high pressure condition. After removing the organic species, the spent catalyst of furfural hydrogenation was mixed with sulphuric acid, and reacted for 1h, 2h, 3h, 4h and 5h at 120°C, 140°C, 160°C, 180°C and 200°C, respectively. The content of copper in filtrate was analyzed by iodimetry. Effects of important variables, such as sulphuric acid concentration, reaction time and temperature, etc., were investigated for determining the optimum conditions. The optimum conditions of maximum leaching rate of spent cupric and chromic catalysts were determined by orthogonal experiment as follows: 80% sulphuric acid, reaction temperature 190°C and reaction time 4h. Under these conditions, the recycling rate of spent cupric and chromic catalysts was more than 93%.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 317-320
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.317
• Online since: January 2013
• Authors: Zeng Xin Li, Guo Ming Wang, Tong Zhu Han
• Keywords: Copper Chromite, Furfural Hydrogenation, Furfuryl Alcohol, Spent Catalyst

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