引用本文:
郑洪岩, 杨骏, 朱玉雷. 1,4-丁二醇常压气相脱氢制γ-丁内酯[J]. 应用化学,
2004, 21(4): 343-347.
Citation: ZHENG Hong-Yan, YANG Jun, ZHU Yu-Lei. Preparation of γ-Butyrolactone by Catalytic Dehydrogenation of 1,4-Butanediol[J]. Chinese Journal of Applied Chemistry, 2004, 21(4): 343-347.
Citation: ZHENG Hong-Yan, YANG Jun, ZHU Yu-Lei. Preparation of γ-Butyrolactone by Catalytic Dehydrogenation of 1,4-Butanediol[J]. Chinese Journal of Applied Chemistry, 2004, 21(4): 343-347.
1,4-丁二醇常压气相脱氢制γ-丁内酯
English
Preparation of γ-Butyrolactone by Catalytic Dehydrogenation of 1,4-Butanediol
Abstract:
The dehydrogenation of 1,4-butanediol to γ-butyrolactone over copper-chromite catalysts at atmospheric pressure has been carried out in a fixed-bed reactor.The effects of reaction conditions on the performance of catalyst have been investigated. The results show that for Cu-Cr-Ca-Ba catalyst the conversion of 1, 4-butanediol is ≥99.9% and the yield of γ-butyrolactone is ≥96% under the conditions:LHSV 0.3~0.7 h-1, reaction temperature 180~200℃ and n(H2)/n(BDO) 15~30.The XRD and TG-DTG characterization results show that Cu0 is the active site of the catalyst in dehydrogenation and the presence of Cr is in favor15 of high dispersion of Cu, which results in increasing of the dehydrogenation activity and selectivity. Addition of Ca and Ba as promoters let the reaction temperature reduce to a lower degree and led to an increased yield of γ-butyrolactone.
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Key words:
- butanediol
- / vapor-phase dehydrogenation
- / γ-butyrolactone
- / Cu-Cr catalyst
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