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담지된 Pd 촉매에 의한 Tetrahydrofurfuryl Alcohol로부터 피리딘 합성
The Synthesis of Pyridine from Tetrahydrofurfuryl Alcohol over Supported Pd Catalysts
HWAHAK KONGHAK, December 1988, 26(6), 649-658(10), NONE
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Abstract
Tetrahydrofurfuryl Alcohol（THFA）와 암모니아의 반응으로부터 피리딘을 합성하기 위한 담지 팔라듐 촉매의 특성을 조사하였다. 담체, 팔라듐의 담지량 및 팔라듐 원료 등이 반응에 미치는 영향을 검토하였다.
Pd/γ-Al2O3 촉매의 P3d 전자의 결합에너지가 담지되지 않은 것보다 높은 쪽으로 전이되는 것이 XPS에서 관찰되었다. 이와같은 현상과 촉매상에서 피리딘 생성반응의 결과로부터 팔라듐과 γ-Al2O3 사이에 상호작용력이 있음을 제시하였다. 상기 반응은 담체의 산도와 깊은 관게를 갖고, 피리딘은 산성촉매에 의하여 개량되는 Pd 표면에서 형성되는 것으로 해석되었다.
Pd/γ-Al2O3 촉매의 P3d 전자의 결합에너지가 담지되지 않은 것보다 높은 쪽으로 전이되는 것이 XPS에서 관찰되었다. 이와같은 현상과 촉매상에서 피리딘 생성반응의 결과로부터 팔라듐과 γ-Al2O3 사이에 상호작용력이 있음을 제시하였다. 상기 반응은 담체의 산도와 깊은 관게를 갖고, 피리딘은 산성촉매에 의하여 개량되는 Pd 표면에서 형성되는 것으로 해석되었다.
The characteristics of supported palladium catalysts was investigated for the synthesis of pyridine from the reaction of tetrahydrofurfuryl alcohol and ammonia. The effects of support, supported amount of palladium, and palladium precursor on the reaction were discussed in this experiment. The core-level binding energy of Pd3d of Pd/γ-Al2O3 in XPS was shifted higher than that of the unsupported palladium.
From this and the reaction of pyridine formation over the catalyst we suggest that there exist interaction between palladium and γ-Al2O3. It was also interpreted that the above reaction was strongly related to the acidity of the support, and pyridine was formed on Pd surface modified by its support.
From this and the reaction of pyridine formation over the catalyst we suggest that there exist interaction between palladium and γ-Al2O3. It was also interpreted that the above reaction was strongly related to the acidity of the support, and pyridine was formed on Pd surface modified by its support.
