CAJ | 학술논문

报道了一种由HCFC-133a与AHF经气相催化氟化制备HFC-134a的CrF3基催化剂。研究了催化剂前驱体的热行为，催化剂的晶相以及催化剂的氟化度，比表面积，孔容对催化活性的影响。研究结果表明，前驱体中添加微量元素可以提高其热稳定性，CrF3基催化剂的活性相以非晶态存在，随着催化剂氟化度的提高，比表面积及孔容的增大，催化剂的活性提高。
보도료일충유HCFC-133a여AHF경기상최화불화제비HFC-134a적CrF3기최화제。연구료최화제전구체적열행위，최화제적정상이급최화제적불화도，비표면적，공용대최화활성적영향。연구결과표명，전구체중첨가미량원소가이제고기열은정성，CrF3기최화제적활성상이비정태존재，수착최화제불화도적제고，비표면적급공용적증대，최화제적활성제고。
A kind of CrF3-based catalyst for HHFC-134a preparation byreacting HFC-133a with AHF via vapor-phase fluorination is reported. The thermal action of the precursor and the crystal structure of the catalyst were studied. The effects of fluorination ratio、 specific surface area and pore volume of the catalysts on their activities were demonstrated. It had been showed by the results that small amount of other elements in the precursors can promote the thermal stability; the active phase of CrF3-based catalyst is amorphous; the activity of the catalyst is improved with crease in the fluorination ratio、 specific surface area and pore volume.