ZrMn Oxides for Aqueous-Phase Ketonization of Acetic Acid: Effect of Crystal and Porosity

Autor:	Husheng Hu, Yulong Wu, Junmei Liang, Mingde Yang, Kejing Wu
Rok vydání:	2018
Předmět:	Carbonization Chemistry Organic Chemistry 02 engineering and technology General Chemistry Thermal treatment 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences Catalysis Solvent Acetic acid chemistry.chemical_compound Crystallinity Chemical engineering Crystallite 0210 nano-technology Hausmannite
Zdroj:	Chemistry - An Asian Journal. 13:1180-1186
ISSN:	1861-4728
Popis:	Aqueous-phase ketonization of bio-based acetic acid is important to improve the conversion efficiency of biomass resources. In this study, ZrMn mixed oxides (ZrMnOx ) with high aqueous-phase ketonization activity are synthetized through a carbonization/oxidation method (COM) and solvothermal method (STM). The results show that ZrMnOx prepared by COM possesses tetragonal ZrO2 , and hausmannite Mn3 O4 is observed only at a high oxidation temperature of 750 °C. Low-temperature and long oxidation results in decreased crystallinity and crystallite size, which is related to highly dispersed Mnn+ species. The catalysts with improved acid sites possess high ketonization activity. Surface areas and pore size of ZrMnOx synthetized by STM are controlled by the solvents for thermal treatment. Compared with water as solvent, ethanol increases the surface area and pore size, resulting in high ketonization activity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53c2618a531a6186bc54827a91fb75aa https://doi.org/10.1002/asia.201800114 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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