引用本文:
王希涛, 钟顺和. Fe-P-O超细非晶态催化剂的制备与表征[J]. 应用化学,
2001, 18(11): 885-888.
Citation: WANG Xi-Tao, ZHONG Shun-He. Preparation and Characterization of Ultrafine Non-crystal Fe-P-O Catalysts[J]. Chinese Journal of Applied Chemistry, 2001, 18(11): 885-888.
Citation: WANG Xi-Tao, ZHONG Shun-He. Preparation and Characterization of Ultrafine Non-crystal Fe-P-O Catalysts[J]. Chinese Journal of Applied Chemistry, 2001, 18(11): 885-888.
Fe-P-O超细非晶态催化剂的制备与表征
摘要:
用共沉淀法和溶胶-凝胶法制备了Fe-P-O催化剂,用DTA-TG、TEM、XRD、IR和TPR等方法对微粒组成、结构进行了表征.以分子探针IR方法考察了乙烷在Fe-P-O催化剂表面上的吸附性能.结果表明,溶胶-凝胶法制备的Fe-P-O催化剂为超细非晶态结构,粒子分布为10~20 nm,其比表面、晶格氧的活泼性均大于共沉淀法制备的晶态Fe-P-O催化剂.乙烷能以分子态吸附于催化剂表面P=O键上,随吸附温度升高,乙烷吸附强度逐渐增大;乙烷在非晶态Fe-P-O催化剂上的吸附量和吸附强度均大于晶态Fe-P-O催化剂.
English
Preparation and Characterization of Ultrafine Non-crystal Fe-P-O Catalysts
Abstract:
Fe-P-O catalysts were prepared by both the coprecipitation and sol-gel methods. The compositions, structures and the chemisorption of ethane on the surface of Fe-P-O catalysts were investigated by DTA-TG, TEM, XRD, BET, IR and TPR techniques. The results showed that the Fe-P-O catalyst particle prepared by sol-gel method were non-crystal and well-distributed ultrafine particles of 10~20 nm. They gave a higher specific surface area and lattice oxygen activity than that of Fe-P-O catalyst prepared by the coprecipitation method. C2H6 could be adsorbed by P=O of the catalyst on its surface in a molecular adsorption state, and the adsorption ability and amount of C2H6 increased with temperature. Moreover, the adsorbed amount of ethane on non crystal state of FePO4 was greater than that on crystal state of FePO4.
-
Key words:
- Fe-P-O catalyst
- / coprecipitation
- / sol-gel method
- / ethane chemisorption
-
-
扫一扫看文章
计量
- PDF下载量: 0
- 文章访问数: 0
- HTML全文浏览量: 0
下载:
