合成异质纳米复合催化剂 ZrO2@SBA-15 用于利用半纤维素生产甲酸

IF 1.8 3区 化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR
S. A. Novikova, Ya. R. Shaer, A. O. Eremina, V. V. Sychev, S. V. Baryshnikov, O. P. Taran
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引用次数: 0

摘要

摘要 采用两种方法合成了含 10 wt % 氧化锆的异质纳米复合 ZrO2@SBA-15 催化剂:(i) 共缩聚法和 (ii) 初湿浸渍法。催化剂及其载体通过 X 射线粉末衍射、X 射线荧光分析、低温氮吸附-解吸和傅立叶变换红外光谱进行了表征。在二氧化硅壁中引入氧化锆后,SBA-15 的介观结构得以保留,但比表面积和孔隙体积有所减小。研究发现,在单级合成过程中,颗粒纤维会缩短并粘在一起。在杨木半纤维素的催化水解-氧化过程中对催化剂进行了测试。最佳甲酸合成条件为 150°С 和 3 小时。在最佳反应条件下,使用共缩合法制备的催化剂获得的最高甲酸产量为 28.4 wt %。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Synthesis of Heterogeneous Nanocomposite Catalyst ZrO2@SBA-15 for Formic Acid Production from Hemicelluloses

Synthesis of Heterogeneous Nanocomposite Catalyst ZrO2@SBA-15 for Formic Acid Production from Hemicelluloses

Abstract

Heterogeneous nanocomposite ZrO2@SBA-15 catalysts containing 10 wt % of zirconium oxide were synthesized by two methods: (i) co-condensation and (ii) incipient wetness impregnation. The catalysts and their carriers were characterized by X-ray powder diffraction, X-ray fluorescence analysis, low-temperature nitrogen adsorption–desorption, and FTIR-spectroscopy. As a result of zirconia introduction into the silica wall, the mesostructure of SBA-15 is preserved, but the specific surface area and pore volume are reduced. It was found that during one-stage synthesis, the particle fibers shorten and stick together. The catalysts were tested in the process of catalytic hydrolysis-oxidation of hemicelluloses of aspen wood. The optimal formic acid synthesis conditions were determined to be 150°С and 3 h. The highest formic acid yield obtained using the catalyst prepared by co-condensation under best reaction conditions was 28.4 wt %.

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来源期刊
Russian Journal of Inorganic Chemistry
Russian Journal of Inorganic Chemistry 化学-无机化学与核化学
CiteScore
3.10
自引率
38.10%
发文量
237
审稿时长
3 months
期刊介绍: Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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