乙烷部分氧化制C2氧化物用Fe－Al－P－O催化剂的研究Ⅰ．超细Fe－Al－P－O催化剂的制备与表征

 用溶胶－凝胶法制备了超细Fe－Al－P－O催化剂，并用DTA－TG，BET，TEM，XRD，TPR和IR等技术研究了催化剂的微观组成和结构及其晶格氧活性，探讨了催化剂的制备工艺，考察了溶胶－凝胶的形成机理、凝胶干燥及焙烧条件对催化剂微观组成和结构的影响规律．结果表明，Fe－Al－P－O催化剂呈非晶态，是具有均匀分布的超细粒子（10nm），其比表面积大（238m2／g），晶格氧活性高．FePO4和AlPO4间隔分布在催化剂表面，形成Lewis碱位（P＝O，P－O－Fe）和Lewis酸位（Fe3＋，Al3＋）．

Study on Fe-Al-P-O Catalyst for Partial Oxidation of Ethane Ⅰ. Preparation and Characterization of Ultrafine Fe-Al-P-O Catalyst

Ultrafine Fe-Al-P-O catalyst was prepared by sol-gel method. The composition and structure of the catalyst were systematically characterized by DTA-TG, BET, TEM, XRD, TPR and IR techniques. The preparation process, the formation mechanism of sol-gel and the effects of gel drying and calcination conditions on the catalyst were discussed. The results showed that the Fe-Al-P-O catalyst is non-crystal phase and well-distributed ultrafine particles (10 nm), having a high specific surface area (238 m 2/g) and high lattice oxygen activity. FePO 4 and AlPO 4 distribute at intervals, and there exist Lewis base sites (P=O and P-O-Fe) and Lewis acid sites (Fe 3+ and Al 3+) on the catalyst surface.