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One of the most significant criteria for the selection and development of catalysts for catalytic pyrolysis of 1'u2010pentene is the acid content of the catalyst. Here, seven catalysts with similar pore characteristics and diverse acid properties were tested and classified in terms of three main characteristics: total acid content, Bru00f8nsted to Lewis acid ratio, and high to low acid ratio. Then, a novel catalyst acid property that included global reaction modeling, was used to predict the yields of the 26 pyrolysis products.
This research presents a synergistic extraction and recovery of vanadium and tungsten from an acid leaching solution that was obtained from spent denitrification catalysts by chlorination heat treatment and acid leaching. The organic phase was moved from the organic phase to the aqueous phase, with a phase ratio of 1, 99. 9% tungsten and 99. 1% vanadium. In contrast, the discarded solutions containing tungsten and vanadium can be returned to the solution's valuable metals using the following purification separation process to recover the valuable metals from the solution. In addition, the thermodynamic investigation revealed that the separation and recovery of tungsten and vanadium from the acid leach solution with LIX984:N263 to be an exothermic process. By the planned process, this process can be effectively extended for the removal of vanadium and tungsten from spent denitrification catalysts, as well as supporting the fact that metals with similar properties can be extracted using a mixture of extractants.
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