摘要
利用硝酸银-硝酸钾(摩尔比0.62:0.38)的熔盐体系作反应介质,以CeO_2,Ce(SO_4)_2,Cu(CF_3CO_2)_2,Co(CF_3CO_2)_2等为催化剂,在160℃和6.0MPa条件下甲烷被氧化成丙酮和/或三氟醋酸甲酯。甲烷的氯化则可在含氯化铜的氯化铝-氯化钠(摩尔比1:1)的熔盐介质中进行,硫酸银的引入可提高甲烷转化率和一氯甲烷的选择性.
At 160℃, Co(Ⅱ) trifluoroacetate and Cu(Ⅱ) trifluoroacetate were found to be active catalysts for methane selective oxidation to mixture of methyl trifluoroacetate and acetone in AgNO3 - KNO3 molten salt medium. Methane could be exclusively converted into acetone over the catalyst of Ce(SO4)2 or CeO2. The results show that both cation and anion play an important role in the process of methane conversion. Methane chlorination conducted in AlCl3 - NaCl molten salt modified with small amounts of other copper - or silver -containing compounds such as CuCl2 and Ag2SO4 catalysts or promoters was also investigated. It was found that methane could be converted to CH3Cl with high selectivity in AlCl3 - NaCl molten salt.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2000年第12期1674-1676,共3页
Acta Chimica Sinica
基金
中国科学院院长基金