Dehydration of 1,4-butanediol was investigated over ZrO 2 at temperatures of 325-375 โข C. Modification of ZrO 2 with a small amount of sodium hydroxide greatly enhanced the selectivity to 3-buten-1-ol. Temperature-programmed desorption of adsorbed NH 3 and CO 2 elucidated acidity and basicity of the
Selective Catalytic Dehydration of 1,4-Butanediol to 3-Buten-1-ol over CeO2 with Different Morphology
โ Scribed by Yongyi HE; Qibiao LI; Yongzhao WANG; Yongxiang ZHAO
- Publisher
- Elsevier Science
- Year
- 2010
- Weight
- 441 KB
- Volume
- 31
- Category
- Article
- ISSN
- 1872-2067
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โฆ Synopsis
CeO 2 catalyst samples were prepared by the precipitation method using Ce(NO 3 ) 3 โข6H 2 O as a precursor. These samples were characterized by N 2 adsorption-desorption, X-ray diffraction, high resolution transmission electron microscopy, and H 2 temperature-programmed reduction. The catalytic performance of these samples for the selective dehydration of 1,4-butanediol to 3-buten-1-ol was investigated. The results show that the CeO 2 catalysts that were prepared using different precipitants exhibited different morphology. The CeO 2 sample precipitated by sodium carbonate showed regular rectangular morphology with clear edges, larger crystallite size, well-grown crystals and preferentially exposed (111) facets. It also had higher activity and higher selectivity in the selective dehydration of 1,4-butanediol to 3-buten-1-ol with yield as high as 59.7%.
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