Study on the Partial Hydrogenation of Butadiene over Highly Dispersed Supported Gold Catalysts

고분산 담지 금 촉매에 의한 Butadiene의 부분 수소화에 관한 연구

  • Received : 1999.07.01
  • Accepted : 1999.09.21
  • Published : 1999.11.10

Abstract

The activity and products distribution for the hydrogenation of butadiene and pentadiene over the gold and cobalt catalysts prepared by coprecipitation and impregnation method was investigated with using a flow reactor under atmospheric pressure. The reaction characteristics of the highly dispersed gold particles and its role were studied. The activity of the gold catalyst by coprecipitation was much higher than that by impregnation. The selectivity of butene on all gold particles was always 100% even in the absence of butadiene in the stream, but butadiene on cobalt supported catalyst was easily hydrogenated to butane. It was therefore considered that the active sites at circumferences of the gold particles possessed an unique property which took a proper affinity to hydrogen. In the hydrogenation of butadiene and pentadiene, the percentages of 1-butene and 2-pentene were 60%~70% and about 62%, respectively. The results could be simply explained by a statistical concepts of hydrogen addition.

Keywords

gold catalyst;highly dispersed;butadiene;hydrogenation

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Acknowledgement

Supported by : 순천대학교 공과대학