초강산 담체인 ZrO₂·SO₄^(2-)에 담지된 백금촉매(0.2, 0.5 wt% Pt)의 저온 산화반응성을 cyclohexane의 완전산화반응에 대하여 조사하였다. 충전층 관형반응기에서 반응물질의 전화율로 측정된 촉매활성은 촉매의 산성도와 비표면적에 비례하여 증가하였다: Pt/ZrO₂·SO₄^(2-) 촉매 제조과정에서 K(potassium)를 첨가하여 촉매의 산성도와 비표면적을 감소시켰을 때 촉매활성은 K첨가량에 비례하여 감소하였다. 또한 Pt/ZrO₂·SO₄^(2-) 촉매는 훨씬 더 큰 비표면적을 가진 Pt/SiO₂, 또는 Pt/Al₂O₃촉매보다 뛰어난 활성을 보였다 : 15,000ppm cyclohexane농도와 18,000hr^(-1)공간속도를 가진 반응물질 흐름을 250℃에서 0.2 wt% Pt/ZrO₂·SO₄^(2-)촉매를 사용하여 전화시킨 결과 96%의 cyclohexane전화율을 보인 반면, 같은 반응조건 하에서 0.2 wt% Pt/SiO₂와 0.2 wt% Pt/Al₂O₃촉매는 각각 83%와 79%의 cyclohexane전화율을 보였다.

Reactivity of Pt catalysts(0.2, 0.5 wt% Pt) supported on solid super acid, ZrO₂·SO₄^(2-), for low-temperature oxidation was investigated for complete oxidation of cyclohexane. Catalytic activity measured as reactant conversion in a packed-bed tubular reactor increased in accordance with the acidity and specific surface area of the catalyst: as the acidity and specific surface area of Pt/ZrO₂·SO₄^(2-) catalyst were diminished by adding potassium during catalyst preparation, the catalyst activity decreased in accordance with the amount of potassium added. In addition, Pt/ZrO₂·SO₄^(2-) catalystexhibited an activity greater than that of a Pt/SiO₂ or Pt/Al₂O₃ catalyst possessing much larger specific surface area: at 250℃ for the reactant stream of 15,000ppm cyclohexane concentration and 18,000 hr^(-1) space velocity, a cyclohexane conversion as high as 96% was obtained over 0.2 wt% Pt/ZrO₂·SO₄^(2-), whereas cyclohexane conversions over 0.2 wt% Pt/SiO₂ and 0.2 wt% Pt/A1₂O₃were 83 and 79%, respectively.