Abstract

In this paper a series of zirconium oxide supported on silica composite oxides were studied as catalysts for the production of 1,3-butadiene from bioethanol and acetaldehyde. The highest selectivity observed was 91.43%. Different silica materials with varied pore diameters in the range of 3.6–11.6 nm and the service life of the catalyst have been initially investigated. The catalysts were characterized by a nitrogen adsorption analysis, X-ray diffraction, scanning electron micrography and ²⁹Si solid-state NMR spectroscopy. The catalytic results show that the pore sizes are important factors determining the activity when catalyst contains a subtle balance of the acid and base.

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摘要

本文研究了一系列负载在二氧化硅复合氧化物上的氧化锆，作为由生物乙醇和乙醛生产1,3-丁二烯的催化剂。观察到的最高选择性为91.43％。最初已经研究了孔径范围在3.6–11.6 nm范围内的不同二氧化硅材料以及催化剂的使用寿命。催化剂通过氮吸附分析，X射线衍射，扫描电子显微镜和²⁹ Si固态NMR光谱进行表征。催化结果表明，当催化剂含有酸和碱的微妙平衡时，孔径是决定活性的重要因素。

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