Effect of vanadia on the performance of NiO in vapor-phase oxidative decarboxylation of benzoic acid to phenol |
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| Affiliation: | 1. College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Laboratory for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518055, PR China;2. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China;3. School of Chemistry, Shoolini University, Solan 173212, Himachal Pradesh, India;4. Department of Chemistry, College of Science, Bld.#5, King Saud University, Riyadh, Saudi Arabia;5. Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China |
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| Abstract: | A series of vanadia-loaded NiO catalysts was tested for the vapor-phase oxidative decarboxylation of benzoic acid to phenol at 673 K. NiO catalyzed the selective formation of phenol at low conversions of benzoic acid. However, the phenol yield declined with time on stream. Introduction of vanadium oxide to the catalyst resulted in pronounced improvements in the phenol yield and its stability, whereas V2O5 alone predominantly catalyzed the combustion of benzoic acid to carbon oxides. Under identical testing conditions, the highest selectivity to phenol (46.9%) was obtained with a 0.49 wt% V2O5 sample, while the highest phenol yield of 7.6% was obtained on a 3.7 wt% V2O5 sample. |
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