Mo～Pt(V等)/HZSM-5上甲烷非氧芳构化  

Non-Oxidative Aromatization of Methane over Mo～Pt(V et al.)/HZSM-5 Catalysts

作　　者：谭平连[1] 徐竹生[1] 张涛[1] 

机构地区：[1]中国科学院大连化学物理研究所

出　　处：《石油与天然气化工》1997年第3期138-140,共3页Chemical engineering of oil & gas

基　　金：国家自然科学基金

摘　　要：考察了添加贵金属、过渡金属氧化物以及Li、P等对Mo／HZSM-5催化剂的影响。结果表明：金属Pt添加组分在一定程度上改善积碳，但催化剂的反应活性有所降低，而添加金属Li的影响很大。当其添加量达到1％后，没有苯生成。过渡金属氧化物的添加，尤其是碱性氧化物添加使得催化剂Mo／HZSM－5的活性有较大的下降。催化剂的酸性在甲烷非氧芳构化过程中的重要作用，及在酸性条件下金属相物种对甲烷的强极化作用也得到了证实。Investigation has been made for the effects of addition of noble metals, certain transition metal oxides and Li and P on Mo/HZSM - 5 catayst for dehydro - olignmerizatin of rnethane to benzene under non - oxidizing condition. The results show tha activity of the Mo/HZSM - 5 catalyst will decrease slightly,but coke formation will be improved when Pt is added as a modifier. The addition of Li influences the methane conversion significantly. When the lithium content nahes 1wt%, no benzene is produced. Addition of certain transition metal oxides, particularly the basic oxides, makes the activity of Mo/HZSM-5 catalyst reduced considerably. It also demonstrated the importance of acidity of the catalst for the dehydri - oligomeriza-tion of methane to aromatics under non-oxidizing condition and the strong polarizing action of molybdenum family metals under acidic condition to methane.

关 键 词：甲烷芳构化 酸性 极化作用 天然气 综合利用 

分 类 号：TE646[石油与天然气工程—油气加工工程]