Lingjun Pei, Xiaoyu Liu, Xihong He, Wenfeng Li, Dongfeng Sun, Huidong Xie, Hu Liu
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引用次数: 0
Abstract
High-entropy oxide aerogels (HEOs), combining the advantages of polymetallic oxides and aerogels, are novel materials with great prospect for catalytic applications. However, the preparation of single-phase HEOs remains a great challenge. Herein, we report a general strategy for the preparation of ultralight 3D porous HEOs by combining a gelation strategy and a high-temperature calcination process. The resulting CuFeCoAgPdOx has the structural and morphological advantages of a HEO and an aerogel and exhibits excellent selectivity (100%), full conversion (>99% yield) in the selective hydrogenation of 4-nitrostyrene. In situ Fourier transform infrared spectroscopy (FT-IR) and gas chromatography confirm that the synergistic effect of the HEOs can preferentially reduce the NO2 group rather than the CC bonds in 4-nitrostyrene. The synergistic effect of CuFeCoAgPdOx and the hydrogenation mechanism were revealed. This study provides a new idea for the design of efficient nitroaromatic hydrogenation catalysts.
期刊介绍：
The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering.
The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field.
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