采用改进的Pechini法合成了(Ba,Ca)(Co,Fe)O3-δ系列材料,对其结构、透氧量及透氧稳定性进行了考察.结果表明,材料具有较高的透氧量和透氧稳定性,其中Ba0.95Ca0.05Co0.8Fe0.2O3-δ在950 ℃透氧量高达1.4 ml/(cm2.min), 850 ℃稳定操作160 h以上.将其应用于膜反应器,对无催化剂的甲烷氧化偶联反应作了尝试.结果表明,对甲烷氧化偶联反应具有较高的选择性,但甲烷转化率较低.
参考文献
| [1] | Spencer N D;Pereira C J .[J].Journal of Catalysis,1989,116(02):399. |
| [2] | Gesser H D;Hunter N R;Prakash C B .[J].Chemical Reviews,1985,85(04):235. |
| [3] | Amenomiya Y;Birss V I;Goledzinowski M et al.[J].Catalysis Review-Science and Engineering,1990,32(03):163. |
| [4] | Keller G E;Bhasin M M .[J].Journal of Catalysis,1982,73(01):9. |
| [5] | Hutchings G J;Scurrell M S;Woodhouse J R .[J].Chemical Society Reviews,1989,18(03):251. |
| [6] | Yu L;Li W Zh;Ducarme V et al.[J].Applied Catalysis A:General,1998,175(1/2):173. |
| [7] | Zeng Y;Lin Y S .[J].Industrial and Engineering Chemistry Research,1997,36(02):277. |
| [8] | Xu SJ.;Thomson WJ. .PEROVSKITE-TYPE OXIDE MEMBRANES FOR THE OXIDATIVE COUPLING OF METHANE[J].AIChE Journal,1997(11 special issue si):2731-2740. |
| [9] | Nomura K;Hayakawa T;Takehira K et al.[J].Applied Catalysis A:General,1993,101(01):63. |
| [10] | 佟建华,杨维慎,任焱杰,邵宗平,熊国兴,林励吾.Ba,Fe掺杂La-Co-O系列混合导电型透氧膜研究[J].催化学报,2000(05):505-509. |
| [11] | Ramadass N .[J].Materials Science and Engineering,1978,36(02):231. |
| [12] | Steele B C H .[J].Materials Science and Engineering,1992,B13(02):79. |
| [13] | Liu L M;Lee T H;Qiu L et al.[J].Materials Research Bulletin,1996,31(01):29. |
| [14] | Tenelshof JE.;Verweij H.;Bouwmeester HJM. .OXIDATIVE COUPLING OF METHANE IN A MIXED-CONDUCTING PEROVSKITE MEMBRANE REACTOR[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,1995(2):195-212. |
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