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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 23, Number 3
JKCSEZ 23(3)
June 20, 1979

Title	Promotors in Copper-Chromium Oxide Catalyst for Furfural Hydrogenation Furfural 수소화반응에서 구리-크롬산화물 촉매에 대한 첨가제의 효과
Author	Hakze Chon, Gon Seo 전학제, 서곤
Keywords
Abstract	Furfural의 수소화반응에 쓰이는 구리-크롬산화물계 촉매에서 바륨, 스트론륨 등의 첨가효과 및 그 기능에 관하여 조사하였다. X-선 회절에 의하면 BaCrO4, SrCrO4등의 생성을 확인할 수 있었으나, 촉매표면적에는 차이가 없었다. 그러나 이들의 첨가로 촉매능은 개선되어 첨가전보다 반응시간에 따른 활성저하폭이 훨씬 적어졌다. 바륨이 첨가된 또는 실기카에 분산시킨 촉매는 CO흡착으로 분산된 Cr(V)의 EPR 스펙트럼을 보여주었으며 표면의 산화-혼원과정에서 가역적인 스펙트럼을 나타내었다. 바륨의 첨가로 촉매활성점이 분산되어 존재함으로서 furfural의 수소화반응에서 향상된 촉매능을 보여주는 것으로 생각된다. The promoting effect of Ba or Sr addition was investigated for furfural hydrogenation reaction over copper-chromium oxide catalysts. X-ray diffraction patterns showed the appearance of BaCrO4 and SrCrO4 phases in Ba, and Sr promoted copper-chromium oxide catalysts. For both Ba and Sr promoted catalysts, the activity decline with reaction time was much smaller compared to that of unpromoted catalyst and copper-chromium oxide catalyst dispersed on silica, reproducible EPR signals of Cr(V) were observed when CO was adsorbed. The promoting effect of Ba addition can be interpreted in terms of active sites dispersion and stabilization.
Page	152 - 160
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