Selective Production of Biobased Phenol from Lignocellulose-Derived Alkylmethoxyphenols
| Autor: | Mike Dirks, Jasper M. Ludenhoff, Emiel J. M. Hensen, Xiaoming Huang, Michael Boot, Xianhong Ouyang |
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| Přispěvatelé: | Inorganic Materials & Catalysis, Chemical Engineering and Chemistry, Energy Technology |
| Rok vydání: | 2018 |
| Předmět: |
Cumene
demethoxylation biomass 010405 organic chemistry lignin Lignocellulosic biomass General Chemistry 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Propylbenzene chemistry.chemical_compound transalkylation chemistry Yield (chemistry) phenol Phenol Organic chemistry SDG 7 - Affordable and Clean Energy Benzene Transalkylation SDG 7 – Betaalbare en schone energie Research Article Space velocity |
| Zdroj: | ACS Catalysis, 8(12), 11184-11190. American Chemical Society ACS Catalysis |
| ISSN: | 2155-5435 |
| Popis: | Lignocellulosic biomass is the only renewable source of carbon for the chemical industry. Alkylmethoxyphenols can be obtained in good yield from woody biomass by reductive fractionation, but these compounds are of limited value for large-scale applications. We present a method to convert lignocellulose-derived alkylmethoxyphenols to phenol that can be easily integrated in the petrochemical industry. The underlying chemistry combines demethoxylation catalyzed by a titania-supported gold nanoparticle catalyst and transalkylation of alkyl groups to a low-value benzene-rich stream promoted by HZSM-5 zeolite. In this way, phenol can be obtained in good yield, and benzene can be upgraded to more valuable propylbenzene, cumene, and toluene. We demonstrate that intimate contact between the two catalyst functions is crucial to transferring the methyl groups from the methoxy functionality to benzene instead of phenol. In a mixed-bed configuration, we achieved a yield of 60% phenol and 15% cresol from 4-propylguaiacol in a continuous one-step reaction at 350 °C at a weight hourly space velocity of ∼40 h -1. |
| Databáze: | OpenAIRE |
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